Metadata
| Key | Value |
|---|---|
| engine | transformers |
| prompt | completion |
| temp | 0.2 |
| top_p | 0.95 |
| max_new_tokens | 1024 |
| n_completions | 10 |
Solutions
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
```
} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
func encode(json: JSON) throws -> String {
// Implementation of JSON encoder
}
func decode(string: String) throws -> JSON {
// Implementation of JSON decoder
}
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type in case of failures.
func deserialize(string: String) throws -> JSON {
// Implementation of JSON deserializer
}
// JSON transformer, returns custom error type in case of failures.
func transform(json: JSON) throws -> JSON {
// Implementation of JSON transformer
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON serializer, returns custom error type in case of failures.
func serialize(json: JSON) throws -> String {
// Implementation of JSON serializer
}
// JSON deserializer, returns custom error type} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'String'} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'String'} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
```
} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
func encode(json: JSON) throws -> String {
// Implementation of JSON encoder
}
func decode(string: String) throws -> JSON {
// Implementation of JSON decoder
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of JSON decoder
}
```
} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'String'} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of the JSON parser
}
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
func validate(json: JSON, with schema: JSON) throws -> Bool {
// Implementation of the JSON validator with schema
}
func validate(json: JSON, with schema: JSON, with context: JSON) throws -> Bool {
// Implementation of the JSON validator with schema and context
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON) throws -> Bool {
// Implementation of the JSON validator with schema, context, and options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with customError: (Error) -> ParsingError) throws -> Bool {
// Implementation of the JSON validator with schema, context, options, and custom error handling
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of the JSON parser
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON) throws -> Bool {
// Implementation of the JSON validator with schema
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON) throws -> Bool {
// Implementation of the JSON validator with schema and context
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON) throws -> Bool {
// Implementation of the JSON validator with schema, context, and options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with customError: (Error) -> ParsingError) throws -> Bool {
// Implementation of the JSON validator with schema, context, options, and custom error handling
}
```
} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
func validate(json: JSON) throws -> JSON {
// Implementation of JSON validator
}
func format(json: JSON) throws -> String {
// Implementation of JSON formatter
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> JSON {
// Implementation of JSON validator
}
// JSON formatter, returns custom error type in case of failures.
func format(json: JSON) throws -> String {
// Implementation of JSON formatter
}
```
} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'String'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of the JSON parser goes here.
// For the purpose of this example, we'll assume it works correctly.
return ["key": "value"]
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of the JSON parser goes here.
// For the purpose of this example, we'll assume it works correctly.
return ["key": "value"]
}
```
// XCTAssertEqual failed: (nil) is not equal to (Optional("John"))typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
```
} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
func validate(json: JSON, with schema: JSON) throws -> Bool {
// Implementation of JSON validator with schema
}
func validate(json: JSON, with schema: JSON, with context: JSON) throws -> Bool {
// Implementation of JSON validator with schema and context
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, and options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, and additional options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, and even more options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, and even more even more options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, and even more even more even more options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, even more even more even more options, and even more even more even more even more options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, even more even more even more options, even more even more even more even more options, and even more even more even more even more even more options
}
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, even more even more even more options, even more even more even more even more options, even more even more even more even more even more options, and even more even more even more even more even more even more options
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of JSON parser
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of JSON validator
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON) throws -> Bool {
// Implementation of JSON validator with schema
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON) throws -> Bool {
// Implementation of JSON validator with schema and context
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, and options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, and additional options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, and even more options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, and even more even more options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, and even more even more even more options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, even more even more even more options, and even more even more even more even more options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, even more even more even more options, even more even more even more even more options, and even more even more even more even more even more options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMoreOptions: JSON, with evenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreEvenMoreOptions: JSON, with evenMoreEvenMoreEvenMoreEvenMoreEvenMoreEvenMoreOptions: JSON) throws -> Bool {
// Implementation of JSON validator with schema, context, options, additional options, even more options, even more even more options, even more even more even more options, even more even more even more even more options, even more even more even more even more even more options, and even more even more even more even more even more even more options
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON, with schema: JSON, with context: JSON, with options: JSON, with additionalOptions: JSON, with evenMore} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'Bool'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
// Implementation of the JSON parser
}
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
// JSON parser, returns custom error type in case of failures.
func parse(string: String) throws -> JSON {
// Implementation of the JSON parser
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String {
// Implementation of the JSON encoder
}
// JSON decoder, returns custom error type in case of failures.
func decode(string: String) throws -> JSON {
// Implementation of the JSON decoder
}
// JSON validator, returns custom error type in case of failures.
func validate(json: JSON) throws -> Bool {
// Implementation of the JSON validator
}
// JSON encoder, returns custom error type in case of failures.
func encode(json: JSON) throws -> String} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')} // missing return in global function expected to return 'Bool'} // missing return in global function expected to return 'String'} // missing return in global function expected to return 'JSON' (aka 'Dictionary<String, Any>')indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case let .text(content):
result += content
case let .element(name, attributes, children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case let .text(content):
result += content
case let .element(name, attributes, children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}
```
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case .text(let content):
result += content
case .element(let name, let attributes, let children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case .text(let content):
result += content
case .element(let name, let attributes, let children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}
```
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case let .text(content):
result += content
case let .element(name, attributes, children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case let .text(content):
result += content
case let .element(name, attributes, children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}
```
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}
// HTML generator from custom elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}
```
Start: a ["href": "swifteval"] // XCTAssertEqual failed: (Start: div [:]indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case .text(let content):
result += content
case .element(let name, let attributes, let children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case .text(let content):
result += content
case .element(let name, let attributes, let children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}
```
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case let .text(content):
result += content
case let .element(name, attributes, children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var result = ""
switch tree {
case let .text(content):
result += content
case let .element(name, attributes, children):
result += "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
}
return result
}
```
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var output = ""
switch tree {
case .text(let content):
output += content
case .element(let name, let attributes, let children):
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\(value)"
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}
func generate(_ tree: [String : Any]) -> String {
var output = ""
switch tree {
case ["text" : let content]:
output += content
case ["element" : let name, let attributes, let children]:
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\(value)"
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var output = ""
switch tree {
case .text(let content):
output += content
case .element(let name, let attributes, let children):
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\(value)"
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}
// HTML generator from user defined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: [String : Any]) -> String {
var output = ""
switch tree {
case ["text" : let content]:
output += content
case ["element" : let name, let attributes, let children]:
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\(value)"
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}
```
case ["text" : let content]: // 'let' binding pattern cannot appear in an expressioncase ["element" : let name, let attributes, let children]: // expected ':' in dictionary literalcase ["element" : let name, let attributes, let children]: // 'let' binding pattern cannot appear in an expressioncase ["element" : let name, let attributes, let children]: // expected ':' in dictionary literalcase ["element" : let name, let attributes, let children]: // 'let' binding pattern cannot appear in an expressioncase ["element" : let name, let attributes, let children]: // 'let' binding pattern cannot appear in an expressionindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}
func generate(_ tree: [String : Any]) -> String {
var attributes = [String : String]()
if let href = tree["href"] as? String {
attributes["href"] = href
}
return generate(.element("a", attributes: attributes, children: [tree["text"] as! String]))
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}
// HTML generator from user defined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: [String : Any]) -> String {
var attributes = [String : String]()
if let href = tree["href"] as? String {
attributes["href"] = href
}
return generate(.element("a", attributes: attributes, children: [tree["text"] as! String]))
}
```
return generate(.element("a", attributes: attributes, children: [tree["text"] as! String])) // cannot convert value of type 'String' to expected element type 'Array<HTMLNode>.ArrayLiteralElement' (aka 'HTMLNode')indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
var output = ""
switch tree {
case let .text(content):
output += content
case let .element(name, attributes, children):
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\"\(value)\""
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var output = ""
switch tree {
case let .text(content):
output += content
case let .element(name, attributes, children):
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\"\(value)\""
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
var output = ""
switch tree {
case let .text(content):
output += content
case let .element(name, attributes, children):
output += "<\(name)"
for (key, value) in attributes {
output += " \(key)=\"\(value)\""
}
output += ">"
for child in children {
output += generate(child)
}
output += "</\(name)>"
}
return output
}
```
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}
// HTML generator from predefined elements tree.
// Output with standart HTML like this "<div><a href="swifteval"></a></div>"
func generate(_ tree: HTMLNode) -> String {
switch tree {
case let .text(content):
return content
case let .element(name, attributes, children):
var attributesString = ""
for (key, value) in attributes {
attributesString += " $\(key)=\"\(value)\""
}
var childrenString = ""
for child in children {
childrenString += generate(child)
}
return "<\(name)\(attributesString)>\(childrenString)</\(name)>"
}
}
```
Start: a ["href": "swifteval"] // XCTAssertEqual failed: (Start: div [:]enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber = ""
var currentOperator: String?
for char in string {
if char.isNumber {
currentNumber.append(char)
} else if char == "(" {
stack.append(Double(currentNumber) ?? 0)
currentNumber = ""
} else if char == ")" {
if let number = Double(currentNumber) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
currentNumber = ""
while let operator_ = stack.popLast() {
if operator_ == "(" {
break
}
let number = stack.popLast() ?? 0
stack.append(calculateOperator(operator_, number))
}
} else if let operator_ = currentOperator {
if let number = Double(currentNumber) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
currentNumber = ""
while let operator_ = stack.popLast() {
if operator_ == "(" {
break
}
let number = stack.popLast() ?? 0
stack.append(calculateOperator(operator_, number))
}
stack.append(operator_)
} else {
currentOperator = String(char)
}
}
if let number = Double(currentNumber) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
while let operator_ = stack.popLast() {
if operator_ == "(" {
throw CalculateError.invalidInput
}
let number = stack.popLast() ?? 0
stack.append(calculateOperator(operator_, number))
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.first ?? 0
}
func calculateOperator(_ operator_: String, _ number: Double) -> Double {
switch operator_ {
case "+":
return number
case "-":
return -number
case "*":
return number * 2
case "/":
return number / 2
default:
return 0
}
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber = ""
var currentOperator: String?
for char in string {
if char.isNumber {
currentNumber.append(char)
} else if char == "(" {
stack.append(Double(currentNumber) ?? 0)
currentNumber = ""
} else if char == ")" {
if let number = Double(currentNumber) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
currentNumber = ""
while let operator_ = stack.popLast() {
if operator_ == "(" {
break
}
let number = stack.popLast() ?? 0
stack.append(calculateOperator(operator_, number))
}
} else if let operator_ = currentOperator {
if let number = Double(currentNumber) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
currentNumber = ""
while let operator_ = stack.popLast() {
if operator_ == "(" {
break
}
let number = stack.popLast() ?? 0
stack.append(calculateOperator(operator_, number))
}
stack.append(operator_)
} else {
currentOperator = String(char)
}
}
if let number = Double(currentNumber) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
while let operator_ = stack.popLast() {
if operator_ == "(" {
throw CalculateError.invalidInput
}
let number = stack.popLast() ?? 0
stack.append(calculateOperator(operator_, number))
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.first ?? 0
}
func calculateOperator(_ operator_: String, _ number: Double) -> Double {
switch operator_ {
case "+":
return number
case "-":
return -number
case "*":
return number * 2
case "/":
return number / 2
default:
return 0
}
}
```
if operator_ == "(" { // binary operator '==' cannot be applied to operands of type 'Double' and 'String'stack.append(calculateOperator(operator_, number)) // cannot convert value of type 'Double' to expected argument type 'String'if operator_ == "(" { // binary operator '==' cannot be applied to operands of type 'Double' and 'String'stack.append(calculateOperator(operator_, number)) // cannot convert value of type 'Double' to expected argument type 'String'stack.append(operator_) // cannot convert value of type 'String' to expected argument type 'Double'if operator_ == "(" { // binary operator '==' cannot be applied to operands of type 'Double' and 'String'stack.append(calculateOperator(operator_, number)) // cannot convert value of type 'Double' to expected argument type 'String'enum CalculateError: Error {
case invalidInput
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
// TODO: Implement this function
// TODO: Handle invalid input
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parentheses
// TODO: Handle invalid number
// TODO: Handle invalid token
// TODO: Handle invalid operation
// TODO: Handle invalid parenthesesXCTAssertEqual(try calculate("2+2"), 4.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("2+2*2"), 6.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("(2+2)*2"), 8.0) // cannot find 'calculate' in scopeXCTAssertThrowsError(try calculate("A/B")) // cannot find 'calculate' in scopeenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
// Parse the string into a list of tokens.
let tokens = string.components(separatedBy: CharacterSet.alphanumerics.inverted)
// Evaluate the tokens.
var stack = [Double]()
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
if operation == .plus {
let right = stack.removeLast()
let left = stack.removeLast()
stack.append(left + right)
} else if operation == .minus {
let right = stack.removeLast()
let left = stack.removeLast()
stack.append(left - right)
} else if operation == .multiply {
let right = stack.removeLast()
let left = stack.removeLast()
stack.append(left * right)
} else if operation == .divide {
let right = stack.removeLast()
let left = stack.removeLast()
if right == 0 {
throw CalculateError.invalidInput
}
stack.append(left / right)
}
}
}
// Return the result.
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
// Parse the string into a list of tokens.
let tokens = string.components(separatedBy: CharacterSet.alphanumerics.inverted)
// Evaluate the tokens.
var stack = [Double]()
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
if operation == .plus {
let right = stack.removeLast()
let left = stack.removeLast()
stack.append(left + right)
} else if operation == .minus {
let right = stack.removeLast()
let left = stack.removeLast()
stack.append(left - right)
} else if operation == .multiply {
let right = stack.removeLast()
let left = stack.removeLast()
stack.append(left * right)
} else if operation == .divide {
let right = stack.removeLast()
let left = stack.removeLast()
if right == 0 {
throw CalculateError.invalidInput
}
stack.append(left / right)
}
}
}
// Return the result.
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
```
} else if let operation = Operation(rawValue: token) { // argument passed to call that takes no argumentsenum CalculateError: Error {
case invalidInput
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
// TODO: Implement this function.
// You can use any data structure you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You can use any variable you want.
// You can use any operator you want.
// You can use any function you want.
// You canXCTAssertEqual(try calculate("2+2"), 4.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("2+2*2"), 6.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("(2+2)*2"), 8.0) // cannot find 'calculate' in scopeXCTAssertThrowsError(try calculate("A/B")) // cannot find 'calculate' in scopeenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber: Double = 0
var currentOperator: Operator = .none
var currentToken: Token = .none
for char in string {
switch char {
case "0"..."9":
currentNumber = currentNumber * 10 + Double(char.asciiValue! - 48)
case "+", "-", "*", "/":
if currentToken != .none {
stack.append(currentNumber)
currentNumber = 0
currentToken = .none
}
currentOperator = Operator(rawValue: char) ?? .none
case "(", ")":
if currentToken != .none {
stack.append(currentNumber)
currentNumber = 0
currentToken = .none
}
if char == "(" {
stack.append(currentOperator.rawValue)
currentOperator = .none
} else {
let operatorValue = stack.removeLast() as! Int
let operand1 = stack.removeLast()
let operand2 = stack.removeLast()
let result = performOperation(operand1, operand2, operatorValue)
stack.append(result)
}
case " ":
break
default:
throw CalculateError.invalidInput
}
}
if currentToken != .none {
stack.append(currentNumber)
}
let result = stack.removeLast()
if !stack.isEmpty {
throw CalculateError.invalidInput
}
return result
}
func performOperation(_ operand1: Double, _ operand2: Double, _ operator: Int) -> Double {
switch operator {
case 0:
return operand1 + operand2
case 1:
return operand1 - operand2
case 2:
return operand1 * operand2
case 3:
return operand1 / operand2
default:
fatalError("Invalid operator")
}
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber: Double = 0
var currentOperator: Operator = .none
var currentToken: Token = .none
for char in string {
switch char {
case "0"..."9":
currentNumber = currentNumber * 10 + Double(char.asciiValue! - 48)
case "+", "-", "*", "/":
if currentToken != .none {
stack.append(currentNumber)
currentNumber = 0
currentToken = .none
}
currentOperator = Operator(rawValue: char) ?? .none
case "(", ")":
if currentToken != .none {
stack.append(currentNumber)
currentNumber = 0
currentToken = .none
}
if char == "(" {
stack.append(currentOperator.rawValue)
currentOperator = .none
} else {
let operatorValue = stack.removeLast() as! Int
let operand1 = stack.removeLast()
let operand2 = stack.removeLast()
let result = performOperation(operand1, operand2, operatorValue)
stack.append(result)
}
case " ":
break
default:
throw CalculateError.invalidInput
}
}
if currentToken != .none {
stack.append(currentNumber)
}
let result = stack.removeLast()
if !stack.isEmpty {
throw CalculateError.invalidInput
}
return result
}
// Perform operation on two operands and operator.
func performOperation(_ operand1: Double, _ operand2: Double, _ operator: Int) -> Double {
switch operator {
case 0:
return operand1 + operand2
case 1:
return operand1 - operand2
case 2:
return operand1 * operand2
case 3:
return operand1 / operand2
default:
fatalError("Invalid operator")
}
}
```
var currentOperator: Operator = .none // cannot find type 'Operator' in scopevar currentToken: Token = .none // cannot find type 'Token' in scopecurrentOperator = Operator(rawValue: char) ?? .none // cannot find 'Operator' in scopelet operatorValue = stack.removeLast() as! Int // cast from 'Double' to unrelated type 'Int' always failsswitch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber = ""
var currentOperator: Operator?
for char in string {
if char.isNumber {
currentNumber.append(char)
} else if let operatorToken = Operator(rawValue: char) {
if let currentNumber = currentNumber {
stack.append(Double(currentNumber)!)
currentNumber = ""
}
currentOperator = operatorToken
} else if char == "(" {
stack.append(currentOperator)
currentOperator = nil
} else if char == ")" {
if let operatorToken = stack.popLast() {
if let currentOperator = currentOperator {
if operatorToken == Operator.addition || operatorToken == Operator.subtraction {
stack.append(operatorToken)
stack.append(currentOperator)
stack.append(currentNumber)
currentNumber = ""
currentOperator = nil
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
} else if char == " " {
continue
} else {
throw CalculateError.invalidInput
}
}
if let currentNumber = currentNumber {
stack.append(Double(currentNumber)!)
}
if let operatorToken = stack.popLast() {
if let currentOperator = currentOperator {
if operatorToken == Operator.addition || operatorToken == Operator.subtraction {
stack.append(operatorToken)
stack.append(currentOperator)
stack.append(currentNumber)
currentNumber = ""
currentOperator = nil
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.first!
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber = ""
var currentOperator: Operator?
for char in string {
if char.isNumber {
currentNumber.append(char)
} else if let operatorToken = Operator(rawValue: char) {
if let currentNumber = currentNumber {
stack.append(Double(currentNumber)!)
currentNumber = ""
}
currentOperator = operatorToken
} else if char == "(" {
stack.append(currentOperator)
currentOperator = nil
} else if char == ")" {
if let operatorToken = stack.popLast() {
if let currentOperator = currentOperator {
if operatorToken == Operator.addition || operatorToken == Operator.subtraction {
stack.append(operatorToken)
stack.append(currentOperator)
stack.append(currentNumber)
currentNumber = ""
currentOperator = nil
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
} else if char == " " {
continue
} else {
throw CalculateError.invalidInput
}
}
if let currentNumber = currentNumber {
stack.append(Double(currentNumber)!)
}
if let operatorToken = stack.popLast() {
if let currentOperator = currentOperator {
if operatorToken == Operator.addition || operatorToken == Operator.subtraction {
stack.append(operatorToken)
stack.append(currentOperator)
stack.append(currentNumber)
currentNumber = ""
currentOperator = nil
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
} else {
throw CalculateError.invalidInput
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.first!
}
```
var currentOperator: Operator? // cannot find type 'Operator' in scope} else if let operatorToken = Operator(rawValue: char) { // cannot find 'Operator' in scopeif let currentNumber = currentNumber { // initializer for conditional binding must have Optional type, not 'String'currentNumber = "" // cannot assign to value: 'currentNumber' is a 'let' constantif operatorToken == Operator.addition || operatorToken == Operator.subtraction { // cannot find 'Operator' in scopeif operatorToken == Operator.addition || operatorToken == Operator.subtraction { // cannot find 'Operator' in scopestack.append(currentNumber) // cannot convert value of type 'String' to expected argument type 'Double'if let currentNumber = currentNumber { // initializer for conditional binding must have Optional type, not 'String'if operatorToken == Operator.addition || operatorToken == Operator.subtraction { // cannot find 'Operator' in scopeif operatorToken == Operator.addition || operatorToken == Operator.subtraction { // cannot find 'Operator' in scopestack.append(currentNumber) // cannot convert value of type 'String' to expected argument type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
// TODO: Implement this function.
return 0
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
// TODO: Implement this function.
return 0
}
```
// XCTAssertEqual failed: (0.0) is not equal to (4.0)enum CalculateError: Error {
case invalidInput
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
// TODO: Implement this function
// You may need to use the `String` methods to split the string into tokens.
// You may need to use the `Double` initializer to convert the tokens to numbers.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use the `try!` operator to handle errors.
// You may need to use the `try?` operator to handle errors.
// You may need to use theXCTAssertEqual(try calculate("2+2"), 4.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("2+2*2"), 6.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("(2+2)*2"), 8.0) // cannot find 'calculate' in scopeXCTAssertThrowsError(try calculate("A/B")) // cannot find 'calculate' in scopeenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
// TODO: Implement
return 0
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
// TODO: Implement
return 0
}
```
// XCTAssertEqual failed: (0.0) is not equal to (4.0)enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber: Double = 0
var currentOperation: Operation = .none
for char in string {
switch char {
case "0"..."9":
currentNumber = currentNumber * 10 + Double(char) - 48
case "+":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
currentOperation = .add
currentNumber = 0
case "-":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(-currentNumber)
}
currentOperation = .subtract
currentNumber = 0
case "*":
currentOperation = .multiply
currentNumber = 0
case "/":
currentOperation = .divide
currentNumber = 0
case "(":
stack.append(currentNumber)
currentNumber = 0
currentOperation = .none
case ")":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
currentOperation = .none
currentNumber = 0
if let last = stack.last, last == "(" {
stack.removeLast()
}
default:
throw CalculateError.invalidInput
}
}
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
return stack.last!
}
func calculateOperation(_ operation: Operation, _ operand1: Double, _ operand2: Double) -> Double {
switch operation {
case .add:
return operand1 + operand2
case .subtract:
return operand1 - operand2
case .multiply:
return operand1 * operand2
case .divide:
if operand2 == 0 {
throw CalculateError.invalidInput
}
return operand1 / operand2
case .none:
return operand1
}
}```swift
enum CalculateError: Error {
case invalidInput
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber: Double = 0
var currentOperation: Operation = .none
for char in string {
switch char {
case "0"..."9":
currentNumber = currentNumber * 10 + Double(char) - 48
case "+":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
currentOperation = .add
currentNumber = 0
case "-":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(-currentNumber)
}
currentOperation = .subtract
currentNumber = 0
case "*":
currentOperation = .multiply
currentNumber = 0
case "/":
currentOperation = .divide
currentNumber = 0
case "(":
stack.append(currentNumber)
currentNumber = 0
currentOperation = .none
case ")":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
currentOperation = .none
currentNumber = 0
if let last = stack.last, last == "(" {
stack.removeLast()
}
default:
throw CalculateError.invalidInput
}
}
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
return stack.last!
}
func calculateOperation(_ operation: Operation, _ operand1: Double, _ operand2: Double) -> Double {
switch operation {
case .add:
return operand1 + operand2
case .subtract:
return operand1 - operand2
case .multiply:
return operand1 * operand2
case .divide:
if operand2 == 0 {
throw CalculateError.invalidInput
}
return operand1 / operand2
case .none:
return operand1
}
}
// Calculator which supports operations from readable string format.
// Valid tokens is "+-*/()", example input is "2+2*2".
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var currentNumber: Double = 0
var currentOperation: Operation = .none
for char in string {
switch char {
case "0"..."9":
currentNumber = currentNumber * 10 + Double(char) - 48
case "+":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
currentOperation = .add
currentNumber = 0
case "-":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(-currentNumber)
}
currentOperation = .subtract
currentNumber = 0
case "*":
currentOperation = .multiply
currentNumber = 0
case "/":
currentOperation = .divide
currentNumber = 0
case "(":
stack.append(currentNumber)
currentNumber = 0
currentOperation = .none
case ")":
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
currentOperation = .none
currentNumber = 0
if let last = stack.last, last == "(" {
stack.removeLast()
}
default:
throw CalculateError.invalidInput
}
}
if currentOperation != .none {
stack.append(calculateOperation(currentOperation, stack.last!, currentNumber))
} else {
stack.append(currentNumber)
}
return stack.last!
}
func calculateOperation(_ operation: Operation, _ operand1: Double, _ operand2: Double) -> Double {
switch operation {
case .add:
return operand1 + operand2
case .subtract:
return operand1 - operand2
case .multiply:
return operand1 * operand2
case .divide:
if operand2 == 0 {
throw CalculateError.invalidInput
}
return operand1 / operand2
case .none:
return operand1
}
}
```
var currentOperation: Operation = .none // type 'Operation' has no member 'none'currentNumber = currentNumber * 10 + Double(char) - 48 // no exact matches in call to initializerif currentOperation != .none { // cannot convert value of type 'Operation' to expected argument type '(any Any.Type)?'currentOperation = .add // type 'Operation' has no member 'add'if currentOperation != .none { // cannot convert value of type 'Operation' to expected argument type '(any Any.Type)?'currentOperation = .subtract // type 'Operation' has no member 'subtract'currentOperation = .multiply // type 'Operation' has no member 'multiply'currentOperation = .divide // type 'Operation' has no member 'divide'currentOperation = .none // type 'Operation' has no member 'none'if currentOperation != .none { // cannot convert value of type 'Operation' to expected argument type '(any Any.Type)?'currentOperation = .none // type 'Operation' has no member 'none'if let last = stack.last, last == "(" { // binary operator '==' cannot be applied to operands of type 'Double' and 'String'if currentOperation != .none { // cannot convert value of type 'Operation' to expected argument type '(any Any.Type)?'case .add: // reference to member 'add' cannot be resolved without a contextual typecase .subtract: // reference to member 'subtract' cannot be resolved without a contextual typecase .multiply: // reference to member 'multiply' cannot be resolved without a contextual typecase .divide: // reference to member 'divide' cannot be resolved without a contextual typethrow CalculateError.invalidInput // error is not handled because the enclosing function is not declared 'throws'case .none: // reference to member 'none' cannot be resolved without a contextual typefunc execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.launch()
let output = process.standardOutput
let error = process.standardError
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.launch()
let output = process.standardOutput
let error = process.standardError
return (output, error)
}
```
return (output, error) // cannot convert return expression of type '(Any?, Any?)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.launch()
let output = process.standardOutput
let error = process.standardError
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.launch()
let output = process.standardOutput
let error = process.standardError
return (output, error)
}
```
return (output, error) // cannot convert return expression of type '(Any?, Any?)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
task.launch()
let output = task.standardOutput?.map(String.init(data: $0, encoding: .utf8)) ?? ""
let error = task.standardError?.map(String.init(data: $0, encoding: .utf8)) ?? ""
task.waitUntilExit()
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
task.launch()
let output = task.standardOutput?.map(String.init(data: $0, encoding: .utf8)) ?? ""
let error = task.standardError?.map(String.init(data: $0, encoding: .utf8)) ?? ""
task.waitUntilExit()
return (output, error)
}
```
let output = task.standardOutput?.map(String.init(data: $0, encoding: .utf8)) ?? "" // value of type 'Any' has no member 'map'let output = task.standardOutput?.map(String.init(data: $0, encoding: .utf8)) ?? "" // anonymous closure argument not contained in a closurelet error = task.standardError?.map(String.init(data: $0, encoding: .utf8)) ?? "" // anonymous closure argument not contained in a closurelet error = task.standardError?.map(String.init(data: $0, encoding: .utf8)) ?? "" // value of type 'Any' has no member 'map'func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
let error = String(data: data, encoding: .utf8)
return (output!, error!)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
let error = String(data: data, encoding: .utf8)
return (output!, error!)
}
```
// XCTAssertEqual failed: (Hello!) is not equal to ()func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: data, encoding: .utf8) ?? ""
let stderr = String(data: data, encoding: .utf8) ?? ""
process.waitUntilExit()
return (stdout, stderr)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: data, encoding: .utf8) ?? ""
let stderr = String(data: data, encoding: .utf8) ?? ""
process.waitUntilExit()
return (stdout, stderr)
}
```
// XCTAssertEqual failed: (Hello!) is not equal to ()func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: data, encoding: .utf8) ?? ""
let stderr = String(data: data, encoding: .utf8) ?? ""
process.waitUntilExit()
return (stdout, stderr)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: data, encoding: .utf8) ?? ""
let stderr = String(data: data, encoding: .utf8) ?? ""
process.waitUntilExit()
return (stdout, stderr)
}
```
// XCTAssertEqual failed: (Hello!) is not equal to ()func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let error = String(data: data, encoding: .utf8) ?? ""
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let error = String(data: data, encoding: .utf8) ?? ""
return (output, error)
}
```
// XCTAssertEqual failed: (Hello!) is not equal to ()func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
process.waitUntilExit()
let output = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
let error = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
process.waitUntilExit()
let output = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
let error = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
return (output, error)
}
```
// XCTAssertTrue failedfunc execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
process.waitUntilExit()
let output = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
let error = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
process.waitUntilExit()
let output = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
let error = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
return (output, error)
}
```
// XCTAssertTrue failedfunc execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let error = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
process.waitUntilExit()
return (output, error)
}```swift
// Function to execute binary with arguments.
// Returns tuple where first element is stdout and second is stderr.
func execute(binary: String, arguments: [String]) -> (String, String) {
let pipe = Pipe()
let process = Process()
process.launchPath = binary
process.arguments = arguments
process.standardOutput = pipe
process.standardError = pipe
process.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let error = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
process.waitUntilExit()
return (output, error)
}
```
// XCTAssertTrue failedfunc memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(10)) // Output: 55 (cached result)
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let result = function(key)
cache[key] = result
return result
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let result = function(key)
cache[key] = result
return result
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(10)) // Output: 55 (cached result)
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(20)) // Output: 6765
print(fibonacci(30)) // Output: 832040
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(10)) // Output: 55 (cached result)
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(20)) // Output: 6765
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(20)) // Output: 6765
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedValue = cache[key] {
return cachedValue
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(20)) // Output: 6765
```
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}```swift
// Memoization function that caches the results of expensive computations.
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let cachedResult = cache[key] {
return cachedResult
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
// Example usage:
let fibonacci = memoize { n in
if n <= 1 {
return n
} else {
return fibonacci(n - 1) + fibonacci(n - 2)
}
}
print(fibonacci(10)) // Output: 55
print(fibonacci(20)) // Output: 6765
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw error
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw error
}
```
throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw error
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw error
}
```
throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw error
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw error
}
```
throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
if attempt == attempts {
throw error
}
}
}
return try task()
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
if attempt == attempts {
throw error
}
}
}
return try task()
}
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
attempt += 1
do {
return try task()
} catch {
print("Attempt \(attempt) failed. Retrying...")
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Maximum retry attempts reached"])
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
attempt += 1
do {
return try task()
} catch {
print("Attempt \(attempt) failed. Retrying...")
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Maximum retry attempts reached"])
}
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
if attempt == attempts {
throw error
}
}
}
return try task()
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
if attempt == attempts {
throw error
}
}
}
return try task()
}
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
// Handle the error and retry if necessary
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed to retry after all attempts"])
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
// Handle the error and retry if necessary
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed to retry after all attempts"])
}
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
// Handle the error and retry if necessary
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Maximum retry attempts reached"])
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
// Handle the error and retry if necessary
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Maximum retry attempts reached"])
}
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw NSError(domain: "Retry failed", code: 0, userInfo: nil)
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw NSError(domain: "Retry failed", code: 0, userInfo: nil)
}
```
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
// Handle the error and retry if necessary
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Maximum retries reached"])
}```swift
// Retry mechanism that retries a task a specified number of times before failing.
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
// Handle the error and retry if necessary
}
}
throw NSError(domain: "RetryFailed", code: 0, userInfo: [NSLocalizedDescriptionKey: "Maximum retries reached"])
}
```
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [String: (T.Type, () -> T)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type, factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registrations: [String: (T.Type, () -> T)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type, factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory()
}
return nil
}
}
```
private var registrations: [String: (T.Type, () -> T)] = [:] // cannot find type 'T' in scopeprivate var registrations: [String: (T.Type, () -> T)] = [:] // cannot find type 'T' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [String: (T.Type, () -> T)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type, factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registrations: [String: (T.Type, () -> T)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type, factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory()
}
return nil
}
}
// Example usage:
let container = DIContainer()
container.register(String.self) { "Hello, World!" }
container.register(Int.self) { 42 }
let greeting: String? = container.resolve(String.self)
let number: Int? = container.resolve(Int.self)
print(greeting ?? "") // Output: "Hello, World!"
print(number ?? 0) // Output: 42
```
private var registrations: [String: (T.Type, () -> T)] = [:] // cannot find type 'T' in scopeprivate var registrations: [String: (T.Type, () -> T)] = [:] // cannot find type 'T' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [String: (T.Type, () -> T)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type, factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registrations: [String: (T.Type, () -> T)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type, factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory()
}
return nil
}
}
```
private var registrations: [String: (T.Type, () -> T)] = [:] // cannot find type 'T' in scopeprivate var registrations: [String: (T.Type, () -> T)] = [:] // cannot find type 'T' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}
```
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var container: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
container[type.description] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = container[type.description] as? () -> T {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var container: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
container[type.description] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = container[type.description] as? () -> T {
return factory()
}
return nil
}
}
// Example usage:
let container = DIContainer()
container.register(String.self) { "Hello, World!" }
container.register(Int.self) { 42 }
let greeting: String? = container.resolve(String.self)
let number: Int? = container.resolve(Int.self)
print(greeting ?? "") // Output: Hello, World!
print(number ?? 0) // Output: 42
```
container[type.description] = factory // type 'T' has no member 'description'if let factory = container[type.description] as? () -> T { // type 'T' has no member 'description'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}
```
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}
```
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}
```
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [String: (type: Any.Type, factory: () -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type: type, factory: factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory() as? T
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registrations: [String: (type: Any.Type, factory: () -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registrations[key] = (type: type, factory: factory)
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let (_, factory) = registrations[key] {
return factory() as? T
}
return nil
}
}
```
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
// Simple dependency injection (DI) container.
class DIContainer: DIContainerProtocol {
private var registry: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = "\(type)"
registry[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = "\(type)"
if let factory = registry[key] as? () -> T {
return factory()
}
return nil
}
}
```
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<
State: Hashable,
Event: Hashable
>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?[event] else {
fatalError("No transition found for state: \(state) and event: \(event)")
}
state = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<
State: Hashable,
Event: Hashable
>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?[event] else {
fatalError("No transition found for state: \(state) and event: \(event)")
}
state = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?[event] else {
print("No transition found for state \(state) and event \(event)")
return
}
state = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?[event] else {
print("No transition found for state \(state) and event \(event)")
return
}
state = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<SMState, SMEvent>'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SM: StateMachineProtocol>: StateMachineProtocol where SM.State: Hashable, SM.Event: Hashable {
typealias State = SM.State
typealias Event = SM.Event
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
func trigger(event: Event) {
guard let nextStates = transitions[currentState]?[event] else {
fatalError("No transition found for state \(currentState) and event \(event)")
}
let nextState = nextStates.randomElement()!
currentState = nextState
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SM: StateMachineProtocol>: StateMachineProtocol where SM.State: Hashable, SM.Event: Hashable {
typealias State = SM.State
typealias Event = SM.Event
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
func trigger(event: Event) {
guard let nextStates = transitions[currentState]?[event] else {
fatalError("No transition found for state \(currentState) and event \(event)")
}
let nextState = nextStates.randomElement()!
currentState = nextState
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
class StateMachine<SM: StateMachineProtocol>: StateMachineProtocol where SM.State: Hashable, SM.Event: Hashable { // type 'StateMachine<SM>' does not conform to protocol 'StateMachineProtocol'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<SM>'let nextState = nextStates.randomElement()! // value of type 'SM.State' has no member 'randomElement'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // generic type 'StateMachine' specialized with too many type parameters (got 2, but expected 1)stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let next = transitions[currentState]?[event] else {
return
}
currentState = next
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let next = transitions[currentState]?[event] else {
return
}
currentState = next
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<SMState, SMEvent>'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let next = transitions[currentState]?[event] else {
return
}
currentState = next
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let next = transitions[currentState]?[event] else {
return
}
currentState = next
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<SMState, SMEvent>'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let next = transitions[currentState]?[event] else {
fatalError("No transition found for state \(currentState) and event \(event)")
}
currentState = next
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SMState: Hashable, SMEvent: Hashable>: StateMachineProtocol {
typealias State = SMState
typealias Event = SMEvent
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let next = transitions[currentState]?[event] else {
fatalError("No transition found for state \(currentState) and event \(event)")
}
currentState = next
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<SMState, SMEvent>'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SM: StateMachineProtocol>: SM where SM.State == State, SM.Event == Event {
private var currentState: SM.State
private var transitions: [SM.State: [SM.State: SM.Event]] = [:]
init(state: SM.State) {
self.currentState = state
}
func trigger(event: SM.Event) {
guard let nextStates = transitions[currentState]?[event] else {
fatalError("No transition found for state \(currentState) and event \(event)")
}
let nextStates = nextStates.map { $0 }
let nextState = nextStates.randomElement()!
currentState = nextState
}
func registerTransition(from fromState: SM.State, to toState: SM.State, event: SM.Event) {
transitions[fromState, default: [:]][toState] = event
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SM: StateMachineProtocol>: SM where SM.State == State, SM.Event == Event {
private var currentState: SM.State
private var transitions: [SM.State: [SM.State: SM.Event]] = [:]
init(state: SM.State) {
self.currentState = state
}
func trigger(event: SM.Event) {
guard let nextStates = transitions[currentState]?[event] else {
fatalError("No transition found for state \(currentState) and event \(event)")
}
let nextStates = nextStates.map { $0 }
let nextState = nextStates.randomElement()!
currentState = nextState
}
func registerTransition(from fromState: SM.State, to toState: SM.State, event: SM.Event) {
transitions[fromState, default: [:]][toState] = event
}
}
```
class StateMachine<SM: StateMachineProtocol>: SM where SM.State == State, SM.Event == Event { // cannot find type 'State' in scopeclass StateMachine<SM: StateMachineProtocol>: SM where SM.State == State, SM.Event == Event { // inheritance from non-protocol, non-class type 'SM'class StateMachine<SM: StateMachineProtocol>: SM where SM.State == State, SM.Event == Event { // cannot find type 'Event' in scopeguard let nextStates = transitions[currentState]?[event] else { // subscript 'subscript(_:)' requires that 'SM.Event' conform to 'RangeExpression'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // generic type 'StateMachine' specialized with too many type parameters (got 2, but expected 1)let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<EventType: Hashable, StateType: Hashable>: StateMachineProtocol {
typealias Event = EventType
typealias State = StateType
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let transition = transitions[currentState]?[event] else {
print("No transition defined for state \(currentState) and event \(event)")
return
}
currentState = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<EventType: Hashable, StateType: Hashable>: StateMachineProtocol {
typealias Event = EventType
typealias State = StateType
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let transition = transitions[currentState]?[event] else {
print("No transition defined for state \(currentState) and event \(event)")
return
}
currentState = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<EventType, StateType>'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightEvent' has no member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<
State: Hashable,
Event: Hashable
>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
var state: State {
get {
return state
}
set {
guard let transition = transitions[state][newValue] else {
fatalError("No transition from \(state) to \(newValue)")
}
state = newValue
}
}
func trigger(event: Event) {
guard let transition = transitions[state][event] else {
fatalError("No transition from \(state) to \(event)")
}
state = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState] = transitions[fromState] ?? [:]
transitions[fromState][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<
State: Hashable,
Event: Hashable
>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
var state: State {
get {
return state
}
set {
guard let transition = transitions[state][newValue] else {
fatalError("No transition from \(state) to \(newValue)")
}
state = newValue
}
}
func trigger(event: Event) {
guard let transition = transitions[state][event] else {
fatalError("No transition from \(state) to \(event)")
}
state = transition
}
func registerTransition(from fromState: State, to toState: State, event: Event) {
transitions[fromState] = transitions[fromState] ?? [:]
transitions[fromState][event] = toState
}
}
```
private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'var state: State { // invalid redeclaration of 'state'guard let transition = transitions[state][newValue] else { // subscript 'subscript(_:)' requires that 'State' conform to 'RangeExpression'guard let transition = transitions[state][newValue] else { // value of optional type '[Event : State]?' must be unwrapped to refer to member 'subscript' of wrapped base type '[Event : State]'guard let transition = transitions[state][event] else { // value of optional type '[Event : State]?' must be unwrapped to refer to member 'subscript' of wrapped base type '[Event : State]'transitions[fromState][event] = toState // value of optional type '[Event : State]?' must be unwrapped to refer to member 'subscript' of wrapped base type '[Event : State]'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<SM: StateMachineProtocol>: SM {
private var transitions: [SM.State: [SM.Event: SM.State]] = [:]
private var currentState: SM.State
init(state: SM.State) {
self.currentState = state
}
func trigger(event: SM.Event) {
guard let nextStates = transitions[currentState]?[event] else {
print("No transition defined for state \(currentState) and event \(event)")
return
}
currentState = nextStates.randomElement()!
}
func registerTransition(from fromState: SM.State, to toState: SM.State, event: SM.Event) {
transitions[fromState, default: [:]][event] = toState
}
}```swift
protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
// Finite state machine with possibility to register custom transitions between states.
class StateMachine<SM: StateMachineProtocol>: SM {
private var transitions: [SM.State: [SM.Event: SM.State]] = [:]
private var currentState: SM.State
init(state: SM.State) {
self.currentState = state
}
func trigger(event: SM.Event) {
guard let nextStates = transitions[currentState]?[event] else {
print("No transition defined for state \(currentState) and event \(event)")
return
}
currentState = nextStates.randomElement()!
}
func registerTransition(from fromState: SM.State, to toState: SM.State, event: SM.Event) {
transitions[fromState, default: [:]][event] = toState
}
}
```
class StateMachine<SM: StateMachineProtocol>: SM { // inheritance from non-protocol, non-class type 'SM'currentState = nextStates.randomElement()! // value of type 'SM.State' has no member 'randomElement'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // generic type 'StateMachine' specialized with too many type parameters (got 2, but expected 1)let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let _, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let _, let size):
return 1
case .directory(let _, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let _, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let _, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let _, let size):
return 1
case .directory(let _, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let _, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
```
case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let _, let contents): // 'let' pattern has no effect; sub-pattern didn't bind any variablescase .file(let _, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let _, let size): // 'let' pattern has no effect; sub-pattern didn't bind any variablescase .directory(let _, let contents): // 'let' pattern has no effect; sub-pattern didn't bind any variablescase .file(let _, let size): // 'let' pattern has no effect; sub-pattern didn't bind any variablesreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
class FileSystemManager {
private var nodes: [String: FileSystemNode] = [:]
func addFile(name: String, size: Int) {
nodes[name] = .file(name: name, size: size)
}
func addDirectory(name: String, contents: [String: FileSystemNode]) {
nodes[name] = .directory(name: name, contents: contents)
}
func calculateInfo() -> FileSystemInfo {
nodes.values.reduce(FileSystemInfo()) { $0 + $1 }
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
// File system manager that uses a dictionary to store file system nodes.
class FileSystemManager {
private var nodes: [String: FileSystemNode] = [:]
func addFile(name: String, size: Int) {
nodes[name] = .file(name: name, size: size)
}
func addDirectory(name: String, contents: [String: FileSystemNode]) {
nodes[name] = .directory(name: name, contents: contents)
}
func calculateInfo() -> FileSystemInfo {
nodes.values.reduce(FileSystemInfo()) { $0 + $1 }
}
}
// Usage example
let manager = FileSystemManager()
manager.addFile(name: "file1", size: 100)
manager.addFile(name: "file2", size: 200)
manager.addDirectory(name: "dir1", contents: [
"file3": .file(name: "file3", size: 300),
"file4": .file(name: "file4", size: 400)
])
let info = manager.calculateInfo()
print("Total size: \(info.totalSize)")
print("Files count: \(info.filesCount)")
print("Tree depth: \(info.treeDepth)")
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'nodes[name] = .directory(name: name, contents: contents) // cannot convert value of type '[String : FileSystemNode]' to expected argument type '[FileSystemNode]'nodes.values.reduce(FileSystemInfo()) { $0 + $1 } // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersnodes.values.reduce(FileSystemInfo()) { $0 + $1 } // missing argument label 'into:' in callnodes.values.reduce(FileSystemInfo()) { $0 + $1 } // operator function '+' requires that 'Dictionary<String, FileSystemNode>.Values.Element' (aka 'FileSystemNode') conform to 'AttributedStringProtocol'nodes.values.reduce(FileSystemInfo()) { $0 + $1 } // no 'reduce' candidates produce the expected contextual result type 'any FileSystemInfo'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
class ConcreteFileSystemManager: FileSystemManager {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
// Concrete file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class ConcreteFileSystemManager: FileSystemManager {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// Usage
let fileSystemNode = FileSystemNode.directory(name: "root", contents: [
FileSystemNode.file(name: "file1", size: 100),
FileSystemNode.directory(name: "subdir", contents: [
FileSystemNode.file(name: "file2", size: 200),
FileSystemNode.file(name: "file3", size: 300)
])
])
let fileSystemInfo = ConcreteFileSystemManager().calculateFileSystemInfo(fileSystemNode)
print("Total size: \(fileSystemInfo.totalSize)")
print("Files count: \(fileSystemInfo.filesCount)")
print("Tree depth: \(fileSystemInfo.treeDepth)")
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.reduce(0) { $0.max($1.treeDepth) } // no '+' candidates produce the expected contextual result type 'Int'return 1 + contents.reduce(0) { $0.max($1.treeDepth) } // reference to member 'max' cannot be resolved without a contextual typeclass ConcreteFileSystemManager: FileSystemManager { // cannot find type 'FileSystemManager' in scopereturn FileSystemInfo(file: name, size: size) // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersreturn FileSystemInfo(directory: name, contents: contents) // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersindirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
class ConcreteFileSystemManager: FileSystemInfo {
var root: FileSystemNode
init(root: FileSystemNode) {
self.root = root
}
var totalSize: Int {
root.totalSize
}
var filesCount: Int {
root.filesCount
}
var treeDepth: Int {
root.treeDepth
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
// Concrete file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class ConcreteFileSystemManager: FileSystemInfo {
var root: FileSystemNode
init(root: FileSystemNode) {
self.root = root
}
var totalSize: Int {
root.totalSize
}
var filesCount: Int {
root.filesCount
}
var treeDepth: Int {
root.treeDepth
}
}
// Usage
let file1 = FileSystemNode.file(name: "file1", size: 100)
let file2 = FileSystemNode.file(name: "file2", size: 200)
let directory1 = FileSystemNode.directory(name: "directory1", contents: [file1, file2])
let root = FileSystemNode.directory(name: "root", contents: [directory1])
let manager = ConcreteFileSystemManager(root: root)
print("Total size: \(manager.totalSize)")
print("Files count: \(manager.filesCount)")
print("Tree depth: \(manager.treeDepth)")
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.reduce(0) { $0.max($1.treeDepth) } // no '+' candidates produce the expected contextual result type 'Int'return 1 + contents.reduce(0) { $0.max($1.treeDepth) } // reference to member 'max' cannot be resolved without a contextual typeindirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
class ConcreteFileSystemManager: FileSystemInfo {
private var root: FileSystemNode
init(root: FileSystemNode) {
self.root = root
}
var totalSize: Int {
root.totalSize
}
var filesCount: Int {
root.filesCount
}
var treeDepth: Int {
root.treeDepth
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
// Concrete file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class ConcreteFileSystemManager: FileSystemInfo {
private var root: FileSystemNode
init(root: FileSystemNode) {
self.root = root
}
var totalSize: Int {
root.totalSize
}
var filesCount: Int {
root.filesCount
}
var treeDepth: Int {
root.treeDepth
}
}
// Usage example
let file1 = FileSystemNode.file(name: "file1.txt", size: 100)
let file2 = FileSystemNode.file(name: "file2.txt", size: 200)
let directory1 = FileSystemNode.directory(name: "directory1", contents: [file1, file2])
let root = FileSystemNode.directory(name: "root", contents: [directory1])
let manager = ConcreteFileSystemManager(root: root)
print("Total size: \(manager.totalSize)")
print("Files count: \(manager.filesCount)")
print("Tree depth: \(manager.treeDepth)")
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
class FileSystemManager {
private let rootNode: FileSystemNode
init(rootNode: FileSystemNode) {
self.rootNode = rootNode
}
func calculateMetadata() -> FileSystemInfo {
return rootNode
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
// File system manager that uses a given file system node to calculate metadata.
class FileSystemManager {
private let rootNode: FileSystemNode
init(rootNode: FileSystemNode) {
self.rootNode = rootNode
}
func calculateMetadata() -> FileSystemInfo {
return rootNode
}
}
// Example usage
let rootNode = FileSystemNode.directory(name: "root", contents: [
FileSystemNode.file(name: "file1", size: 100),
FileSystemNode.directory(name: "subdir", contents: [
FileSystemNode.file(name: "file2", size: 200),
FileSystemNode.directory(name: "subsubdir", contents: [
FileSystemNode.file(name: "file3", size: 300)
])
])
])
let manager = FileSystemManager(rootNode: rootNode)
let metadata = manager.calculateMetadata()
print("Total size: \(metadata.totalSize)")
print("Files count: \(metadata.filesCount)")
print("Tree depth: \(metadata.treeDepth)")
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 0
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
class RecursiveFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
switch node {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
contents.forEach { calculateInfo(for: $0) }
}
}
}
class BreadthFirstFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
var queue: [FileSystemNode] = [node]
while !queue.isEmpty {
let currentNode = queue.removeFirst()
switch currentNode {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
queue.append(contents)
}
}
}
}
class DepthFirstFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
var stack: [FileSystemNode] = [node]
while !stack.isEmpty {
let currentNode = stack.removeLast()
switch currentNode {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
stack.append(contents)
}
}
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 0
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
// File system manager that uses recursive depth-first search to calculate file system information.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class RecursiveFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
switch node {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
contents.forEach { calculateInfo(for: $0) }
}
}
}
// File system manager that uses iterative breadth-first search to calculate file system information.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class BreadthFirstFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
var queue: [FileSystemNode] = [node]
while !queue.isEmpty {
let currentNode = queue.removeFirst()
switch currentNode {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
queue.append(contents)
}
}
}
}
// File system manager that uses iterative depth-first search to calculate file system information.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class DepthFirstFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
var stack: [FileSystemNode] = [node]
while !stack.isEmpty {
let currentNode = stack.removeLast()
switch currentNode {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
stack.append(contents)
}
}
}
}
// File system manager that uses iterative depth-first search to calculate file system information.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class DepthFirstFileSystemManager: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
func calculateInfo(for node: FileSystemNode) {
var stack: [FileSystemNode] = [node]
while !stack.isEmpty {
let currentNode = stack.removeLast()
switch currentNode {
case .file(let name, let size):
totalSize += size
filesCount += 1
case .directory(let name, let contents):
treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1)
stack.append(contents)
}
}
}
}
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.reduce(0) { $0.max($1.treeDepth) } // no '+' candidates produce the expected contextual result type 'Int'return 1 + contents.reduce(0) { $0.max($1.treeDepth) } // reference to member 'max' cannot be resolved without a contextual typetreeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1) // reference to member 'max' cannot be resolved without a contextual typetreeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1) // reference to member 'max' cannot be resolved without a contextual typequeue.append(contents) // no exact matches in call to instance method 'append'treeDepth = max(treeDepth, contents.reduce(0) { $0.max($1.treeDepth) } + 1) // reference to member 'max' cannot be resolved without a contextual typestack.append(contents) // no exact matches in call to instance method 'append'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size, _):
return size
case .directory(let _, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(_, _):
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(_, _):
return 0
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
class FileSystemManager {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
class FileSystemNodeFactory {
func createFileNode(_ name: String, _ size: Int) -> FileSystemNode {
.file(name: name, size: size)
}
func createDirectoryNode(_ name: String, _ contents: [FileSystemNode]) -> FileSystemNode {
.directory(name: name, contents: contents)
}
}
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size, _):
return size
case .directory(let _, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(_, _):
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(_, _):
return 0
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
// File system manager that uses file system nodes to calculate file system metadata.
class FileSystemManager {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system node factory that creates file system nodes based on file system metadata.
class FileSystemNodeFactory {
func createFileNode(_ name: String, _ size: Int) -> FileSystemNode {
.file(name: name, size: size)
}
func createDirectoryNode(_ name: String, _ contents: [FileSystemNode]) -> FileSystemNode {
.directory(name: name, contents: contents)
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directory(let name, let contents):
return FileSystemInfo(directory: name, contents: contents)
}
}
}
// File system metadata calculator that uses file system nodes to calculate file system metadata.
class FileSystemMetadataCalculator {
func calculateFileSystemInfo(_ node: FileSystemNode) -> FileSystemInfo {
switch node {
case .file(let name, let size):
return FileSystemInfo(file: name, size: size)
case .directoryreturn size // cannot convert return expression of type 'String' to return type 'Int'case .directory(let _, let contents): // 'let' pattern has no effect; sub-pattern didn't bind any variablesreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'return FileSystemInfo(file: name, size: size) // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersreturn FileSystemInfo(directory: name, contents: contents) // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersreturn FileSystemInfo(file: name, size: size) // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersreturn FileSystemInfo(directory: name, contents: contents) // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersindirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return 1 + contents.reduce(0) { $0.max($1.treeDepth) }
}
}
}
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.reduce(0) { $0.max($1.treeDepth) } // no '+' candidates produce the expected contextual result type 'Int'return 1 + contents.reduce(0) { $0.max($1.treeDepth) } // reference to member 'max' cannot be resolved without a contextual typeindirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 0
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
class ConcreteFileSystemManager: FileSystemInfo {
private var root: FileSystemNode
init(root: FileSystemNode) {
self.root = root
}
var totalSize: Int {
root.totalSize
}
var filesCount: Int {
root.filesCount
}
var treeDepth: Int {
root.treeDepth
}
}```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
// Abstract file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let name, let size):
return size
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file(let name, let size):
return 1
case .directory(let name, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file(let name, let size):
return 0
case .directory(let name, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
// Concrete file system manager and metadata calculation.
// Used to calculate total size of all files in file system, files count and file system tree depth.
class ConcreteFileSystemManager: FileSystemInfo {
private var root: FileSystemNode
init(root: FileSystemNode) {
self.root = root
}
var totalSize: Int {
root.totalSize
}
var filesCount: Int {
root.filesCount
}
var treeDepth: Int {
root.treeDepth
}
}
```
case .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'size' was never used; consider replacing with '_' or removing itcase .file(let name, let size): // immutable value 'name' was never used; consider replacing with '_' or removing itcase .directory(let name, let contents): // immutable value 'name' was never used; consider replacing with '_' or removing itreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
var elements: [StackElement] = []
init() {
// Initialize the stack.
}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
var elements: [StackElement] = []
init() {
// Initialize the stack.
}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}
// Example usage:
let stack = Stack<Int>()
stack.push(1)
stack.push(2)
stack.push(3)
print(stack.pop()!) // Output: 3
print(stack.pop()!) // Output: 2
print(stack.pop()!) // Output: 1
print(stack.pop()!) // Output: nil
```
init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}
// Example usage:
let stack = Stack<Int>()
stack.push(1)
stack.push(2)
stack.push(3)
print(stack.pop()!) // Output: 3
print(stack.pop()!) // Output: 2
print(stack.pop()!) // Output: 1
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
guard !elements.isEmpty else { return nil }
return elements.removeLast()
}
}
```
class Stack<StackElement>: StackProtocol { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement> : StackProtocol {
var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement> : StackProtocol {
var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
// Generic stack with push and pop functions.
class Stack<StackElement>: StackProtocol {
private var elements: [StackElement] = []
init() {}
func push(_ element: StackElement) {
elements.append(element)
}
func pop() -> StackElement? {
return elements.popLast()
}
}
// Example usage:
let stack = Stack<Int>()
stack.push(1)
stack.push(2)
stack.push(3)
print(stack.pop()!) // Output: 3
print(stack.pop()!) // Output: 2
print(stack.pop()!) // Output: 1
print(stack.pop()) // Output: nil
```
init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<StackElement>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(order.firstIndex(of: key)!)
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(order.firstIndex(of: key)!)
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
} else {
cache[key] = nil
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(order.firstIndex(of: key)!)
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(order.firstIndex(of: key)!)
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
} else {
cache[key] = nil
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(order.firstIndex(of: key)!)
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
if let index = cache[key] {
order.remove(at: index)
}
order.append(key)
cache[key] = value
if cache.count > capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
} else {
if cache.count >= capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
cache[key] = newValue
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(order.firstIndex(of: key)!)
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
if let index = cache[key] {
order.remove(at: index)
}
order.append(key)
cache[key] = value
if cache.count > capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
} else {
if cache.count >= capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
cache[key] = newValue
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.remove(at: index) // cannot convert value of type 'Element' to expected argument type 'Int'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(where: { $0 == key })
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
} else {
cache[key] = nil
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(where: { $0 == key })
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
} else {
cache[key] = nil
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
cache[key] = value
if cache.count > capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
} else {
if cache.count > capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
cache[key] = value
if cache.count > capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
} else {
if cache.count > capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(where: { $0 == key })
order.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = order.removeFirst()
cache.removeValue(forKey: leastRecentlyUsedKey)
}
cache[key] = newValue
order.append(key)
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(where: { $0 == key })
order.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = order.removeFirst()
cache.removeValue(forKey: leastRecentlyUsedKey)
}
cache[key] = newValue
order.append(key)
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(where: { $0 == key })
order.append(key)
} else {
if cache.count >= capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
cache[key] = newValue
order.append(key)
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let value = newValue {
cache[key] = value
order.removeFirst(where: { $0 == key })
order.append(key)
} else {
if cache.count >= capacity {
let oldestKey = order.removeFirst()
cache.removeValue(forKey: oldestKey)
}
cache[key] = newValue
order.append(key)
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
}
return nil
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}
// Example usage:
let cache = Cache<Int, String>(capacity: 3)
cache[1] = "one"
cache[2] = "two"
cache[3] = "three"
cache[4] = "four" // This will evict the least recently used item (1)
print(cache[1]) // nil
print(cache[2]) // "two"
print(cache[3]) // "three"
print(cache[4]) // "four"
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
// Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
// The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
order.removeFirst(where: { $0 == key })
order.append(key)
return value
} else {
return nil
}
}
set {
if let oldValue = cache[key] {
order.removeFirst(where: { $0 == key })
}
cache[key] = newValue
order.append(key)
if order.count > capacity {
let oldestKey = order.removeFirst()
cache[oldestKey] = nil
}
}
}
}
```
init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'order.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsorder.removeFirst(where: { $0 == key }) // argument passed to call that takes no argumentsprotocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expirationTime: TimeInterval = 0
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationTime = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key], expirationTime > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expirationTime {
cache.removeValue(forKey: key)
return nil
}
}
return cache[key]
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expirationTime: TimeInterval = 0
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationTime = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key], expirationTime > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expirationTime {
cache.removeValue(forKey: key)
return nil
}
}
return cache[key]
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // 'Key' is not a member type of type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpirableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpireableCacheProtocol>: ExpirableCacheProtocol where ExpireableCacheProtocol.Key: Hashable {
private var cache: [ExpireableCacheProtocol.Key: ExpireableCacheProtocol.Value] = [:]
private var expirationTimer: Timer?
private var expirationInterval: TimeInterval = 0
init(expirationInterval: TimeInterval) {
self.expirationInterval = expirationInterval
}
func put(value: ExpireableCacheProtocol.Value, key: ExpireableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationTimer = Timer.scheduledTimer(withTimeInterval: expiration, repeats: false) { [weak self] _ in
self?.remove(key: key)
}
}
func get(key: ExpireableCacheProtocol.Key) -> ExpireableCacheProtocol.Value? {
if let value = cache[key] {
return value
}
return nil
}
func remove(key: ExpireableCacheProtocol.Key) {
cache.removeValue(forKey: key)
if let timer = expirationTimer {
timer.invalidate()
expirationTimer = nil
}
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpireableCacheProtocol>: ExpirableCacheProtocol where ExpireableCacheProtocol.Key: Hashable {
private var cache: [ExpireableCacheProtocol.Key: ExpireableCacheProtocol.Value] = [:]
private var expirationTimer: Timer?
private var expirationInterval: TimeInterval = 0
init(expirationInterval: TimeInterval) {
self.expirationInterval = expirationInterval
}
func put(value: ExpireableCacheProtocol.Value, key: ExpireableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationTimer = Timer.scheduledTimer(withTimeInterval: expiration, repeats: false) { [weak self] _ in
self?.remove(key: key)
}
}
func get(key: ExpireableCacheProtocol.Key) -> ExpireableCacheProtocol.Value? {
if let value = cache[key] {
return value
}
return nil
}
func remove(key: ExpireableCacheProtocol.Key) {
cache.removeValue(forKey: key)
if let timer = expirationTimer {
timer.invalidate()
expirationTimer = nil
}
}
}
```
class ExpirableCache<ExpireableCacheProtocol>: ExpirableCacheProtocol where ExpireableCacheProtocol.Key: Hashable { // 'Key' is not a member type of type 'ExpireableCacheProtocol'class ExpirableCache<ExpireableCacheProtocol>: ExpirableCacheProtocol where ExpireableCacheProtocol.Key: Hashable { // type 'ExpirableCache<ExpireableCacheProtocol>' does not conform to protocol 'ExpirableCacheProtocol'private var cache: [ExpireableCacheProtocol.Key: ExpireableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpireableCacheProtocol'func put(value: ExpireableCacheProtocol.Value, key: ExpireableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpireableCacheProtocol'func put(value: ExpireableCacheProtocol.Value, key: ExpireableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpireableCacheProtocol'func get(key: ExpireableCacheProtocol.Key) -> ExpireableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpireableCacheProtocol'func get(key: ExpireableCacheProtocol.Key) -> ExpireableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpireableCacheProtocol'func remove(key: ExpireableCacheProtocol.Key) { // 'Key' is not a member type of type 'ExpireableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expiration: TimeInterval = 0
init(expiration: TimeInterval) {
self.expiration = expiration
}
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
self.expiration = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if expiration > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expiration {
cache.removeValue(forKey: key)
return nil
}
}
return value
}
return nil
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expiration: TimeInterval = 0
init(expiration: TimeInterval) {
self.expiration = expiration
}
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
self.expiration = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if expiration > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expiration {
cache.removeValue(forKey: key)
return nil
}
}
return value
}
return nil
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value { // 'Key' is not a member type of type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value { // expected ':' or '==' to indicate a conformance or same-type requirementclass ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpirableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private let expiration: TimeInterval
init(expiration: TimeInterval) {
self.expiration = expiration
}
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
scheduleExpiration(key, expiration: expiration)
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if isExpired(key) {
remove(key)
return nil
}
return value
}
return nil
}
private func scheduleExpiration(key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
DispatchQueue.global().asyncAfter(deadline: .now() + expiration) {
self.remove(key)
}
}
private func isExpired(key: ExpirableCacheProtocol.Key) -> Bool {
let expirationDate = Date().addingTimeInterval(-expiration)
return cache[key]?.expirationDate ?? expirationDate > Date()
}
private func remove(key: ExpirableCacheProtocol.Key) {
cache.removeValue(forKey: key)
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private let expiration: TimeInterval
init(expiration: TimeInterval) {
self.expiration = expiration
}
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
scheduleExpiration(key, expiration: expiration)
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if isExpired(key) {
remove(key)
return nil
}
return value
}
return nil
}
private func scheduleExpiration(key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
DispatchQueue.global().asyncAfter(deadline: .now() + expiration) {
self.remove(key)
}
}
private func isExpired(key: ExpirableCacheProtocol.Key) -> Bool {
let expirationDate = Date().addingTimeInterval(-expiration)
return cache[key]?.expirationDate ?? expirationDate > Date()
}
private func remove(key: ExpirableCacheProtocol.Key) {
cache.removeValue(forKey: key)
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // 'Key' is not a member type of type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpirableCacheProtocol'private func scheduleExpiration(key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'private func isExpired(key: ExpirableCacheProtocol.Key) -> Bool { // 'Key' is not a member type of type 'ExpirableCacheProtocol'private func remove(key: ExpirableCacheProtocol.Key) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date().addingTimeInterval(expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
if let cachedValue = cache[key]?.value, cache[key]?.expiration > Date() {
return cachedValue
} else {
cache.removeValue(forKey: key)
return nil
}
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date().addingTimeInterval(expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
if let cachedValue = cache[key]?.value, cache[key]?.expiration > Date() {
return cachedValue
} else {
cache.removeValue(forKey: key)
return nil
}
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'private var cache: [Key: (value: Value, expiration: Date)] = [:] // cannot find type 'Key' in scopefunc put(value: Value, key: Key, expiration: TimeInterval) { // cannot find type 'Value' in scopefunc put(value: Value, key: Key, expiration: TimeInterval) { // cannot find type 'Key' in scopefunc get(key: Key) -> Value? { // cannot find type 'Value' in scopefunc get(key: Key) -> Value? { // cannot find type 'Key' in scopeif let cachedValue = cache[key]?.value, cache[key]?.expiration > Date() { // value of optional type 'Date?' must be unwrapped to a value of type 'Date'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expirationQueue: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private let expirationTime: TimeInterval
init(expirationTime: TimeInterval) {
self.expirationTime = expirationTime
}
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationQueue[key] = value
scheduleExpiration(key, expiration: expiration)
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if let expiration = expirationQueue[key], expiration < Date().timeIntervalSince1970 {
removeExpired(key)
}
return value
}
return nil
}
private func scheduleExpiration(key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
DispatchQueue.global().asyncAfter(deadline: .now() + expiration) {
self.removeExpired(key)
}
}
private func removeExpired(key: ExpirableCacheProtocol.Key) {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expirationQueue: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private let expirationTime: TimeInterval
init(expirationTime: TimeInterval) {
self.expirationTime = expirationTime
}
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationQueue[key] = value
scheduleExpiration(key, expiration: expiration)
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if let expiration = expirationQueue[key], expiration < Date().timeIntervalSince1970 {
removeExpired(key)
}
return value
}
return nil
}
private func scheduleExpiration(key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
DispatchQueue.global().asyncAfter(deadline: .now() + expiration) {
self.removeExpired(key)
}
}
private func removeExpired(key: ExpirableCacheProtocol.Key) {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // 'Key' is not a member type of type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'private var expirationQueue: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpirableCacheProtocol'private func scheduleExpiration(key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'private func removeExpired(key: ExpirableCacheProtocol.Key) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Expireable: ExpirableCacheProtocol>: Cache<Expireable.Key, Expireable.Value> {
private var expirationMap: [Expireable.Key: Date] = [:]
override func put(value: Expireable.Value, key: Expireable.Key, expiration: TimeInterval) {
super.put(value: value, key: key)
expirationMap[key] = Date().addingTimeInterval(expiration)
}
override func get(key: Expireable.Key) -> Expireable.Value? {
if let expiration = expirationMap[key], expiration < Date() {
remove(key: key)
return nil
}
return super.get(key: key)
}
func remove(key: Expireable.Key) {
super.remove(key: key)
expirationMap.removeValue(forKey: key)
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<Expireable: ExpirableCacheProtocol>: Cache<Expireable.Key, Expireable.Value> {
private var expirationMap: [Expireable.Key: Date] = [:]
override func put(value: Expireable.Value, key: Expireable.Key, expiration: TimeInterval) {
super.put(value: value, key: key)
expirationMap[key] = Date().addingTimeInterval(expiration)
}
override func get(key: Expireable.Key) -> Expireable.Value? {
if let expiration = expirationMap[key], expiration < Date() {
remove(key: key)
return nil
}
return super.get(key: key)
}
func remove(key: Expireable.Key) {
super.remove(key: key)
expirationMap.removeValue(forKey: key)
}
}
```
class ExpirableCache<Expireable: ExpirableCacheProtocol>: Cache<Expireable.Key, Expireable.Value> { // cannot find type 'Cache' in scopeoverride func put(value: Expireable.Value, key: Expireable.Key, expiration: TimeInterval) { // method does not override any method from its superclasssuper.put(value: value, key: key) // 'super' members cannot be referenced in a root classoverride func get(key: Expireable.Key) -> Expireable.Value? { // method does not override any method from its superclassreturn super.get(key: key) // 'super' members cannot be referenced in a root classsuper.remove(key: key) // 'super' members cannot be referenced in a root classlet cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expirationTime: TimeInterval = 0
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationTime = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key], expirationTime > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expirationTime {
cache.removeValue(forKey: key)
return nil
}
}
return cache[key]
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expirationTime: TimeInterval = 0
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
expirationTime = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key], expirationTime > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expirationTime {
cache.removeValue(forKey: key)
return nil
}
}
return cache[key]
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // 'Key' is not a member type of type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpirableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value: Equatable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expiration: TimeInterval = 0
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
self.expiration = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if expiration > 0 {
if Date().timeIntervalSince1970 > expiration {
cache.removeValue(forKey: key)
return nil
}
}
return value
}
return nil
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value: Equatable {
private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:]
private var expiration: TimeInterval = 0
func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) {
cache[key] = value
self.expiration = expiration
}
func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? {
if let value = cache[key] {
if expiration > 0 {
if Date().timeIntervalSince1970 > expiration {
cache.removeValue(forKey: key)
return nil
}
}
return value
}
return nil
}
}
```
class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value: Equatable { // inheritance from non-protocol, non-class type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value: Equatable { // 'Value' is not a member type of type 'ExpirableCacheProtocol'class ExpirableCache<ExpirableCacheProtocol>: ExpirableCacheProtocol where ExpirableCacheProtocol.Key: Hashable, ExpirableCacheProtocol.Value: Equatable { // 'Key' is not a member type of type 'ExpirableCacheProtocol'private var cache: [ExpirableCacheProtocol.Key: ExpirableCacheProtocol.Value] = [:] // 'Key' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func put(value: ExpirableCacheProtocol.Value, key: ExpirableCacheProtocol.Key, expiration: TimeInterval) { // 'Key' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Value' is not a member type of type 'ExpirableCacheProtocol'func get(key: ExpirableCacheProtocol.Key) -> ExpirableCacheProtocol.Value? { // 'Key' is not a member type of type 'ExpirableCacheProtocol'let cache = ExpirableCache<String, String>() // generic type 'ExpirableCache' specialized with too many type parameters (got 2, but expected 1)Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<CacheKey: Hashable, CacheValue>: ExpirableCacheProtocol {
private var cache: [CacheKey: CacheValue] = [:]
private var expiration: TimeInterval = 0
func put(value: CacheValue, key: CacheKey, expiration: TimeInterval) {
cache[key] = value
self.expiration = expiration
}
func get(key: CacheKey) -> CacheValue? {
if let value = cache[key] {
if expiration > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expiration {
cache.removeValue(forKey: key)
return nil
}
}
return value
}
return nil
}
}```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
// Caching mechanism with expiration eviction policy.
// Subscript methods used for convenient access.
class ExpirableCache<CacheKey: Hashable, CacheValue>: ExpirableCacheProtocol {
private var cache: [CacheKey: CacheValue] = [:]
private var expiration: TimeInterval = 0
func put(value: CacheValue, key: CacheKey, expiration: TimeInterval) {
cache[key] = value
self.expiration = expiration
}
func get(key: CacheKey) -> CacheValue? {
if let value = cache[key] {
if expiration > 0 {
let currentTime = Date().timeIntervalSince1970
if currentTime > expiration {
cache.removeValue(forKey: key)
return nil
}
}
return value
}
return nil
}
}
```
Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertEqual failed: (nil) is not equal to (Optional("Hello, SwiftEval!"))protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let encryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: stringData.count)
for i in 0..<stringData.count {
encryptedBytes[i] = stringBytes[i] ^ keyBytes[i % keyData.count]
}
return encryptedBytes
}
}
return Data(encryptedBytes: encryptedData, count: stringData.count)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let decryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: data.count)
for i in 0..<data.count {
decryptedBytes[i] = dataBytes[i] ^ keyBytes[i % keyData.count]
}
return decryptedBytes
}
}
return String(bytes: decryptedBytes, encoding: .utf8)!
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let encryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: stringData.count)
for i in 0..<stringData.count {
encryptedBytes[i] = stringBytes[i] ^ keyBytes[i % keyData.count]
}
return encryptedBytes
}
}
return Data(encryptedBytes: encryptedData, count: stringData.count)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let decryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: data.count)
for i in 0..<data.count {
decryptedBytes[i] = dataBytes[i] ^ keyBytes[i % keyData.count]
}
return decryptedBytes
}
}
return String(bytes: decryptedBytes, encoding: .utf8)!
}
}
```
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadkeyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadreturn Data(encryptedBytes: encryptedData, count: stringData.count) // incorrect argument label in call (have 'encryptedBytes:count:', expected 'bytes:count:')let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadkeyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadreturn String(bytes: decryptedBytes, encoding: .utf8)! // cannot find 'decryptedBytes' in scopeprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
var encryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyLength]
let encryptedByte = byte ^ keyByte
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyLength]
let decryptedByte = byte ^ keyByte
decryptedData[index] = decryptedByte
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
var encryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyLength]
let encryptedByte = byte ^ keyByte
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyLength]
let decryptedByte = byte ^ keyByte
decryptedData[index] = decryptedByte
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}
```
return String(decryptedData, encoding: .utf8) ?? "" // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let encryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: stringData.count)
for i in 0..<stringData.count {
encryptedBytes[i] = stringBytes[i] ^ keyBytes[i % keyData.count]
}
return encryptedBytes
}
}
return Data(encryptedBytes: encryptedData, count: stringData.count)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let decryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: data.count)
for i in 0..<data.count {
decryptedBytes[i] = dataBytes[i] ^ keyBytes[i % keyData.count]
}
return decryptedBytes
}
}
return String(bytes: decryptedBytes, encoding: .utf8)!
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let encryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: stringData.count)
for i in 0..<stringData.count {
encryptedBytes[i] = stringBytes[i] ^ keyBytes[i % keyData.count]
}
return encryptedBytes
}
}
return Data(encryptedBytes: encryptedData, count: stringData.count)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
let decryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: data.count)
for i in 0..<data.count {
decryptedBytes[i] = dataBytes[i] ^ keyBytes[i % keyData.count]
}
return decryptedBytes
}
}
return String(bytes: decryptedBytes, encoding: .utf8)!
}
}
```
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadkeyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadreturn Data(encryptedBytes: encryptedData, count: stringData.count) // incorrect argument label in call (have 'encryptedBytes:count:', expected 'bytes:count:')let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadkeyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadreturn String(bytes: decryptedBytes, encoding: .utf8)! // cannot find 'decryptedBytes' in scopeprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in
return keyBytes
}
let encryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: stringData.count)
for i in 0..<stringData.count {
encryptedBytes[i] = stringBytes[i] ^ keyBytes[i % keyData.count]
}
return Data(bytes: encryptedBytes, count: stringData.count)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in
return keyBytes
}
let decryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: data.count)
for i in 0..<data.count {
decryptedBytes[i] = dataBytes[i] ^ keyBytes[i % keyData.count]
}
return Data(bytes: decryptedBytes, count: data.count)
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in
return keyBytes
}
let encryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: stringData.count)
for i in 0..<stringData.count {
encryptedBytes[i] = stringBytes[i] ^ keyBytes[i % keyData.count]
}
return Data(bytes: encryptedBytes, count: stringData.count)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in
return keyBytes
}
let decryptedBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: data.count)
for i in 0..<data.count {
decryptedBytes[i] = dataBytes[i] ^ keyBytes[i % keyData.count]
}
return Data(bytes: decryptedBytes, count: data.count)
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}
```
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadlet keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadlet decryptedData = data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) -> Data in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadlet keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadreturn String(decryptedData, encoding: .utf8) ?? "" // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> UnsafePointer<UInt8> in
return keyBytes
}
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafeBytes { (stringBytes: UnsafePointer<UInt8>) -> Data in
return Data(bytes: stringBytes, count: stringData.count).withUnsafelet encryptor = Encryptor() // cannot find 'Encryptor' in scopeprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (bytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> [UInt8] in
Array(UnsafeBufferPointer(start: keyBytes, count: keyData.count))
}
let encryptedBytes = bytes.map { (byte: UInt8) -> UInt8 in
byte ^ keyBytes[byte % keyData.count]
}
return Data(bytes: encryptedBytes, count: encryptedBytes.count)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (bytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> [UInt8] in
Array(UnsafeBufferPointer(start: keyBytes, count: keyData.count))
}
let decryptedBytes = bytes.map { (byte: UInt8) -> UInt8 in
byte ^ keyBytes[byte % keyData.count]
}
return Data(bytes: decryptedBytes, count: decryptedBytes.count)
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
let encryptedData = stringData.withUnsafeBytes { (bytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> [UInt8] in
Array(UnsafeBufferPointer(start: keyBytes, count: keyData.count))
}
let encryptedBytes = bytes.map { (byte: UInt8) -> UInt8 in
byte ^ keyBytes[byte % keyData.count]
}
return Data(bytes: encryptedBytes, count: encryptedBytes.count)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = data.withUnsafeBytes { (bytes: UnsafePointer<UInt8>) -> Data in
let keyBytes = keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) -> [UInt8] in
Array(UnsafeBufferPointer(start: keyBytes, count: keyData.count))
}
let decryptedBytes = bytes.map { (byte: UInt8) -> UInt8 in
byte ^ keyBytes[byte % keyData.count]
}
return Data(bytes: decryptedBytes, count: decryptedBytes.count)
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}
```
let encryptedBytes = bytes.map { (byte: UInt8) -> UInt8 in // value of type 'UnsafePointer<UInt8>' has no member 'map'byte ^ keyBytes[byte % keyData.count] // cannot convert value of type 'UInt8' to expected argument type 'Int'let decryptedBytes = bytes.map { (byte: UInt8) -> UInt8 in // value of type 'UnsafePointer<UInt8>' has no member 'map'byte ^ keyBytes[byte % keyData.count] // cannot convert value of type 'UInt8' to expected argument type 'Int'return String(decryptedData, encoding: .utf8) ?? "" // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for i in 0..<stringData.count {
encryptedData[i] = stringData[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let encryptedData = data
var decryptedString = ""
for i in 0..<encryptedData.count {
decryptedString.append(Character(UnicodeScalar(encryptedData[i] ^ keyData[i % keyData.count])!))
}
return decryptedString
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for i in 0..<stringData.count {
encryptedData[i] = stringData[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let encryptedData = data
var decryptedString = ""
for i in 0..<encryptedData.count {
decryptedString.append(Character(UnicodeScalar(encryptedData[i] ^ keyData[i % keyData.count])!))
}
return decryptedString
}
}
```
decryptedString.append(Character(UnicodeScalar(encryptedData[i] ^ keyData[i % keyData.count])!)) // cannot force unwrap value of non-optional type 'UnicodeScalar' (aka 'Unicode.Scalar')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
decryptedData.append(decryptedByte)
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
decryptedData.append(decryptedByte)
}
return String(decryptedData, encoding: .utf8) ?? ""
}
}
```
return String(decryptedData, encoding: .utf8) ?? "" // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for byte in data {
let keyByte = keyData[decryptedString.count % keyData.count]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(UnicodeScalar(decryptedByte)))
}
return decryptedString
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for byte in data {
let keyByte = keyData[decryptedString.count % keyData.count]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(UnicodeScalar(decryptedByte)))
}
return decryptedString
}
}
```
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let encryptedData = data
var decryptedString = ""
for (index, byte) in encryptedData.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
let character = Character(UnicodeScalar(decryptedByte))
decryptedString.append(character)
}
return decryptedString
}
}```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
// Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let encryptedData = data
var decryptedString = ""
for (index, byte) in encryptedData.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
let character = Character(UnicodeScalar(decryptedByte))
decryptedString.append(character)
}
return decryptedString
}
}
```
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}
// Example usage:
let rateLimiter = RateLimiter(maxRequests: 5, timeInterval: 10)
let canMakeRequest = rateLimiter.allowRequest()
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requests = 0
}
}
func allowRequest() -> Bool {
if requests < maxRequests {
requests += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requests: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requests = 0
}
}
func allowRequest() -> Bool {
if requests < maxRequests {
requests += 1
return true
} else {
return false
}
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date = Date()
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = Date()
let timeSinceLastRequest = currentTime.timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
requests += 1
if requests > maxRequests {
return false
}
} else {
requests = 1
}
lastRequestTime = currentTime
return true
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requests: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date = Date()
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = Date()
let timeSinceLastRequest = currentTime.timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
requests += 1
if requests > maxRequests {
return false
}
} else {
requests = 1
}
lastRequestTime = currentTime
return true
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requests = 0
}
}
func allowRequest() -> Bool {
if requests < maxRequests {
requests += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requests: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requests = 0
}
}
func allowRequest() -> Bool {
if requests < maxRequests {
requests += 1
return true
} else {
return false
}
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestsCount = 0
}
}
func allowRequest() -> Bool {
if requestsCount < maxRequests {
requestsCount += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestsCount: Int = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestsCount = 0
}
}
func allowRequest() -> Bool {
if requestsCount < maxRequests {
requestsCount += 1
return true
} else {
return false
}
}
}
// Example usage:
let rateLimiter = RateLimiter(maxRequests: 5, timeInterval: 10)
print(rateLimiter.allowRequest()) // true
print(rateLimiter.allowRequest()) // true
print(rateLimiter.allowRequest()) // true
print(rateLimiter.allowRequest()) // true
print(rateLimiter.allowRequest()) // true
print(rateLimiter.allowRequest()) // false
print(rateLimiter.allowRequest()) // false
print(rateLimiter.allowRequest()) // false
print(rateLimiter.allowRequest()) // false
print(rateLimiter.allowRequest()) // true
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private var timeInterval: TimeInterval
private var lastRequestTime: Date
init(maxRequests: Int, timeInterval: TimeInterval) {
self.timeInterval = timeInterval
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
let currentTime = Date()
let timeSinceLastRequest = currentTime.timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
requestCount += 1
lastRequestTime = currentTime
return true
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestCount: Int = 0
private var timeInterval: TimeInterval
private var lastRequestTime: Date
init(maxRequests: Int, timeInterval: TimeInterval) {
self.timeInterval = timeInterval
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
let currentTime = Date()
let timeSinceLastRequest = currentTime.timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
requestCount += 1
lastRequestTime = currentTime
return true
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestCount = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
let currentTime = Date()
let timeSinceLastRequest = currentTime.timeIntervalSince(lastRequestTime ?? currentTime)
if timeSinceLastRequest < timeInterval {
requestCount += 1
if requestCount > maxRequests {
return false
}
} else {
requestCount = 1
}
lastRequestTime = currentTime
return true
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestCount = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
let currentTime = Date()
let timeSinceLastRequest = currentTime.timeIntervalSince(lastRequestTime ?? currentTime)
if timeSinceLastRequest < timeInterval {
requestCount += 1
if requestCount > maxRequests {
return false
}
} else {
requestCount = 1
}
lastRequestTime = currentTime
return true
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestCount = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
// Rate limiter that controls the rate of actions.
// Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
class RateLimiter: RateLimiterProtocol {
private var requestCount = 0
private let maxRequests: Int
private let timeInterval: TimeInterval
private let timeIntervalTimer: Timer
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
timeIntervalTimer = Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] _ in
self?.requestCount = 0
}
}
func allowRequest() -> Bool {
if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}
```
init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// Do nothing
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations, but not for write operations.
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// Do nothing
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterRead'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
class ThreadSafeCounter2: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations and not for write operations.
class ThreadSafeCounter2: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter2'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let result = value
lock.unlock()
return result
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let result = value
lock.unlock()
return result
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// No-op
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations but not for write operations.
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// No-op
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterRead'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// Do nothing
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounterWrite: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations but not for write operations.
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// Do nothing
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Not thread-safe for read and write operations.
class ThreadSafeCounterWrite: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterRead'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterWrite'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int = 0
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int = 0
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounter2: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations and not thread-safe for write operations.
class ThreadSafeCounter2: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter2'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// No need to synchronize here, as it's not a write operation.
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations, but not for write operations.
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// No need to synchronize here, as it's not a write operation.
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterRead'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// Do nothing
}
func currentValue() -> Int {
return value
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
value += 1
}
func currentValue() -> Int {
return value
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations only.
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
init(value: Int) {
self.value = value
}
func increment() {
// Do nothing
}
func currentValue() -> Int {
return value
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterRead'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let result = value
lock.unlock()
return result
}
}
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let result = value
lock.unlock()
return result
}
}```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read and write operations.
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let result = value
lock.unlock()
return result
}
}
// Basic number counter with possibility to increment counter and access current value.
// Thread-safe for read operations, but not for write operations.
class ThreadSafeCounterRead: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let result = value
lock.unlock()
return result
}
}
```
init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounterRead'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [((Output) -> Output)?]
init(value: Output) {
self.value = value
self.transforms = []
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
var newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
if let transform = transform {
currentValue = transform(currentValue)
}
}
return currentValue
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [((Output) -> Output)?]
init(value: Output) {
self.value = value
self.transforms = []
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
var newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
if let transform = transform {
currentValue = transform(currentValue)
}
}
return currentValue
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 + 5 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'var newPipeline = Pipeline<U>(value: value) // cannot convert value of type 'Output' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
var newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
var newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 * 2 }
.pipe { $0 + 3 }
.pipe { $0 / 2 }
.pipe { $0 - 1 }
let result = pipeline.execute() // result is 11
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'var newPipeline = Pipeline<U>(value: value) // cannot convert value of type 'Output' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
var newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
var newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'var newPipeline = Pipeline<U>(value: value) // cannot convert value of type 'Output' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [((Output) -> Output)] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $0($1) }
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [((Output) -> Output)] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $0($1) }
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 + 5 }
.pipe { $0 * 2 }
.pipe { $0 / 3 }
.pipe { $0 - 1 }
.pipe { $0 * 10 }
let result = pipeline.execute()
print(result) // Output: 33
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = transforms + [transform] // cannot convert value of type '[((Output) -> Output)]' to expected argument type 'IndexPath'newPipeline.transforms = transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')newPipeline.transforms = transforms + [transform] // cannot assign value of type 'IndexPath' to type '[((U) -> U)]'return transforms.reduce(value) { $0($1) } // cannot convert value of type 'Output' to expected argument type '(inout @escaping (_, _) -> _, @escaping ((Output) -> Output)) throws -> ()'return transforms.reduce(value) { $0($1) } // cannot convert return expression of type '(_, _) -> _' to return type 'Output'return transforms.reduce(value) { $0($1) } // missing argument label 'into:' in callprotocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var current = value
for transform in transforms {
current = transform(current)
}
return current
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var current = value
for transform in transforms {
current = transform(current)
}
return current
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 + 5 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.pipe { $0 / 2 }
.pipe { $0 % 3 }
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = transforms + [transform] // cannot assign value of type 'IndexPath' to type '[(U) -> U]'newPipeline.transforms = transforms + [transform] // cannot convert value of type '[(Output) -> Output]' to expected argument type 'IndexPath'newPipeline.transforms = transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [((Output) -> Output)] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [((Output) -> Output)] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 * 2 }
.pipe { $0 + 3 }
.pipe { $0 / 2 }
.pipe { $0 - 1 }
let result = pipeline.execute()
print(result) // Output: 14
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = transforms + [transform] // cannot assign value of type 'IndexPath' to type '[((U) -> U)]'newPipeline.transforms = transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')newPipeline.transforms = transforms + [transform] // cannot convert value of type '[((Output) -> Output)]' to expected argument type 'IndexPath'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentValue = value
for transform in transforms {
currentValue = transform(currentValue)
}
return currentValue
}
}
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = transforms + [transform] // cannot convert value of type '[(Output) -> Output]' to expected argument type 'IndexPath'newPipeline.transforms = transforms + [transform] // cannot assign value of type 'IndexPath' to type '[(U) -> U]'newPipeline.transforms = transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = self.transforms + [transform]
return newPipeline
}
func execute() -> Output {
var current = value
for transform in transforms {
current = transform(current)
}
return current
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = self.transforms + [transform]
return newPipeline
}
func execute() -> Output {
var current = value
for transform in transforms {
current = transform(current)
}
return current
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 + 5 }
.pipe { $0 * 2 }
.pipe { $0 / 3 }
.pipe { $0 - 1 }
.pipe { $0 * 2 }
.pipe { $0 + 10 }
let result = pipeline.execute()
print(result) // Output: 20
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = self.transforms + [transform] // cannot convert value of type '[(Output) -> Output]' to expected argument type 'IndexPath'newPipeline.transforms = self.transforms + [transform] // cannot assign value of type 'IndexPath' to type '[(U) -> U]'newPipeline.transforms = self.transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = transforms + [transform]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 * 2 }
.pipe { $0 + 3 }
.pipe { $0 / 2 }
.pipe { $0 - 1 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 2 }
.pipe { $0 + 1 }
.pipe { $0 / 2 }
.pipe { $0 * 3 }
.pipe { $init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = transforms + [transform] // cannot convert value of type '[(Output) -> Output]' to expected argument type 'IndexPath'newPipeline.transforms = transforms + [transform] // cannot assign value of type 'IndexPath' to type '[(U) -> U]'newPipeline.transforms = transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = self.transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentOutput = value
for transform in transforms {
currentOutput = transform(currentOutput)
}
return currentOutput
}
}```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
// Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
// Ensure the final output is produced by sequentially applying transformations starting from an initial value.
class Pipeline<Output>: PipelineProtocol {
typealias Input = Output
private var value: Output
private var transforms: [(Output) -> Output] = []
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: transform(value))
newPipeline.transforms = self.transforms + [transform]
return newPipeline
}
func execute() -> Output {
var currentOutput = value
for transform in transforms {
currentOutput = transform(currentOutput)
}
return currentOutput
}
}
// Example usage:
let pipeline = Pipeline<Int>(value: 10)
.pipe { $0 + 5 }
.pipe { $0 * 2 }
.pipe { $0 / 3 }
.pipe { Int($0) }
pipeline.execute() // Returns 3
```
init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'newPipeline.transforms = self.transforms + [transform] // cannot convert value of type '[(Output) -> Output]' to expected argument type 'IndexPath'newPipeline.transforms = self.transforms + [transform] // cannot convert value of type '(Output) -> U' to expected element type 'IndexPath.ArrayLiteralElement' (aka 'Int')newPipeline.transforms = self.transforms + [transform] // cannot assign value of type 'IndexPath' to type '[(U) -> U]'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'observer(newValue) // cannot call value of non-function type 'UUID'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'observer(newValue) // cannot call value of non-function type 'UUID'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.insert(uuid)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.insert(uuid)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'observer(newValue) // cannot call value of non-function type 'UUID'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'observer(newValue) // cannot call value of non-function type 'UUID'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers[observerId] = observer
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
observers.forEach { $0.value(newValue) }
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
let oldValue = value
value = newValue
observers.forEach { $0.value(newValue) }
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
// Generic observable property that notifies observers of value changes.
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: Set<UUID> = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let observerId = UUID()
observers.insert(observerId)
return observerId
}
func unsubscribe(_ observer: UUID) {
observers.remove(observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.forEach { observer in
observer(newValue)
}
}
}
}
```
private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'observer(newValue) // cannot call value of non-function type 'UUID'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue {
var wrappedValue: Wrapped.Value
let range: ClosedRange<Wrapped.Value>
init(wrappedValue: Wrapped.Value, _ range: ClosedRange<Wrapped.Value>) {
self.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range)
}
var wrappedValue: Wrapped.Value {
get {
return wrappedValue
}
set {
wrappedValue = Wrapped.init(wrappedValue: newValue, range)
}
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue {
var wrappedValue: Wrapped.Value
let range: ClosedRange<Wrapped.Value>
init(wrappedValue: Wrapped.Value, _ range: ClosedRange<Wrapped.Value>) {
self.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range)
}
var wrappedValue: Wrapped.Value {
get {
return wrappedValue
}
set {
wrappedValue = Wrapped.init(wrappedValue: newValue, range)
}
}
}
```
struct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue { // cannot find type 'ExpressibleByWrappedValue' in scopestruct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue { // property wrapper type 'Clamped' has multiple non-static properties named 'wrappedValue'self.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range) // cannot assign value of type 'Wrapped' to type 'Wrapped.Value'var wrappedValue: Wrapped.Value { // invalid redeclaration of 'wrappedValue'wrappedValue = Wrapped.init(wrappedValue: newValue, range) // cannot assign value of type 'Wrapped' to type 'Wrapped.Value'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
extension Wrapped where Wrapped: Comparable {
func clamped(to range: ClosedRange<Wrapped>) -> Wrapped {
return max(range.lowerBound, min(range.upperBound, self))
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
// Extension to clamp a value within a specified range.
extension Wrapped where Wrapped: Comparable {
func clamped(to range: ClosedRange<Wrapped>) -> Wrapped {
return max(range.lowerBound, min(range.upperBound, self))
}
}
```
set { wrappedValue = newValue.clamped(to: range) } // value of type 'Wrapped' has no member 'clamped'extension Wrapped where Wrapped: Comparable { // cannot find type 'Wrapped' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue {
var wrappedValue: Wrapped.Value
let range: ClosedRange<Wrapped.Value>
init(wrappedValue: Wrapped.Value, range: ClosedRange<Wrapped.Value>) {
self.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range: range).wrappedValue
}
var wrappedValue: Wrapped.Value {
get { return wrappedValue }
set { wrappedValue = Wrapped.init(wrappedValue: newValue, range: range).wrappedValue }
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue {
var wrappedValue: Wrapped.Value
let range: ClosedRange<Wrapped.Value>
init(wrappedValue: Wrapped.Value, range: ClosedRange<Wrapped.Value>) {
self.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range: range).wrappedValue
}
var wrappedValue: Wrapped.Value {
get { return wrappedValue }
set { wrappedValue = Wrapped.init(wrappedValue: newValue, range: range).wrappedValue }
}
}
```
struct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue { // cannot find type 'ExpressibleByWrappedValue' in scopestruct Clamped<Wrapped: ClampedProtocol>: ExpressibleByWrappedValue { // property wrapper type 'Clamped' has multiple non-static properties named 'wrappedValue'self.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range: range).wrappedValue // extraneous argument label 'range:' in callself.wrappedValue = Wrapped.init(wrappedValue: wrappedValue, range: range).wrappedValue // value of type 'Wrapped' has no member 'wrappedValue'var wrappedValue: Wrapped.Value { // invalid redeclaration of 'wrappedValue'set { wrappedValue = Wrapped.init(wrappedValue: newValue, range: range).wrappedValue } // extraneous argument label 'range:' in callset { wrappedValue = Wrapped.init(wrappedValue: newValue, range: range).wrappedValue } // value of type 'Wrapped' has no member 'wrappedValue'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = range.clamped(newValue) }
}
}
struct MyStruct {
@Clamped(wrappedValue: 0, 0...100) var myValue: Int
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = range.clamped(newValue) }
}
}
// Example usage:
struct MyStruct {
@Clamped(wrappedValue: 0, 0...100) var myValue: Int
}
let myStruct = MyStruct()
myStruct.myValue = 150 // Clamps to 100
print(myStruct.myValue) // Prints 100
```
set { wrappedValue = range.clamped(newValue) } // missing argument label 'to:' in callset { wrappedValue = range.clamped(newValue) } // cannot assign value of type 'ClosedRange<Wrapped>' to type 'Wrapped'set { wrappedValue = range.clamped(newValue) } // cannot convert value of type 'Wrapped' to expected argument type 'ClosedRange<Wrapped>'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue.clamped(to: range)
self.range = range
}
var wrappedValue: Wrapped {
get { return wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
struct MyStruct {
@Clamped(wrappedValue: 0, 0...100) var myValue: Int
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue.clamped(to: range)
self.range = range
}
var wrappedValue: Wrapped {
get { return wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
// Example usage:
struct MyStruct {
@Clamped(wrappedValue: 0, 0...100) var myValue: Int
}
let myStruct = MyStruct()
print(myStruct.myValue) // Output: 0
myStruct.myValue = 101
print(myStruct.myValue) // Output: 100
```
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable { // property wrapper type 'Clamped' has multiple non-static properties named 'wrappedValue'self.wrappedValue = wrappedValue.clamped(to: range) // value of type 'Wrapped' has no member 'clamped'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'set { wrappedValue = newValue.clamped(to: range) } // value of type 'Wrapped' has no member 'clamped'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
extension Clamped: ExpressibleByIntegerLiteral {
init(integerLiteral value: Int) {
self.init(wrappedValue: value, .zero...Int.max)
}
}
extension Clamped: ExpressibleByFloatLiteral {
init(floatLiteral value: Float) {
self.init(wrappedValue: value, .zero...Float.max)
}
}
extension Clamped: ExpressibleByDoubleLiteral {
init(doubleLiteral value: Double) {
self.init(wrappedValue: value, .zero...Double.max)
}
}
extension Clamped: ExpressibleByStringLiteral {
init(stringLiteral value: String) {
self.init(wrappedValue: value, .zero...String.max)
}
}
extension Clamped: ExpressibleByCharacterLiteral {
init(characterLiteral value: Character) {
self.init(wrappedValue: value, .zero...Character.max)
}
}
extension Clamped: ExpressibleByAnyInteger {
init(integer value: AnyInteger) {
self.init(wrappedValue: value, .zero...AnyInteger.max)
}
}
extension Clamped: ExpressibleByAnyFloat {
init(float value: AnyFloat) {
self.init(wrappedValue: value, .zero...AnyFloat.max)
}
}
extension Clamped: ExpressibleByAnyDouble {
init(double value: AnyDouble) {
self.init(wrappedValue: value, .zero...AnyDouble.max)
}
}
extension Clamped: ExpressibleByAnyString {
init(string value: AnyString) {
self.init(wrappedValue: value, .zero...AnyString.max)
}
}
extension Clamped: ExpressibleByAnyCharacter {
init(character value: AnyCharacter) {
self.init(wrappedValue: value, .zero...AnyCharacter.max)
}
}
extension Clamped: ExpressibleByAnyNumeric {
init(numeric value: AnyNumeric) {
self.init(wrappedValue: value, .zero...AnyNumeric.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
extension Clamped: ExpressibleByIntegerLiteral {
init(integerLiteral value: Int) {
self.init(wrappedValue: value, .zero...Int.max)
}
}
extension Clamped: ExpressibleByFloatLiteral {
init(floatLiteral value: Float) {
self.init(wrappedValue: value, .zero...Float.max)
}
}
extension Clamped: ExpressibleByDoubleLiteral {
init(doubleLiteral value: Double) {
self.init(wrappedValue: value, .zero...Double.max)
}
}
extension Clamped: ExpressibleByStringLiteral {
init(stringLiteral value: String) {
self.init(wrappedValue: value, .zero...String.max)
}
}
extension Clamped: ExpressibleByCharacterLiteral {
init(characterLiteral value: Character) {
self.init(wrappedValue: value, .zero...Character.max)
}
}
extension Clamped: ExpressibleByAnyInteger {
init(integer value: AnyInteger) {
self.init(wrappedValue: value, .zero...AnyInteger.max)
}
}
extension Clamped: ExpressibleByAnyFloat {
init(float value: AnyFloat) {
self.init(wrappedValue: value, .zero...AnyFloat.max)
}
}
extension Clamped: ExpressibleByAnyDouble {
init(double value: AnyDouble) {
self.init(wrappedValue: value, .zero...AnyDouble.max)
}
}
extension Clamped: ExpressibleByAnyString {
init(string value: AnyString) {
self.init(wrappedValue: value, .zero...AnyString.max)
}
}
extension Clamped: ExpressibleByAnyCharacter {
init(character value: AnyCharacter) {
self.init(wrappedValue: value, .zero...AnyCharacter.max)
}
}
extension Clamped: ExpressibleByAnyNumeric {
init(numeric value: AnyNumeric) {
self.init(wrappedValue: value, .zero...AnyNumeric.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped: ExpressibleByAnyNumericLiteral {
init(numericLiteral value: AnyNumericLiteral) {
self.init(wrappedValue: value, .zero...AnyNumericLiteral.max)
}
}
extension Clamped:set { wrappedValue = newValue.clamped(to: range) } // value of type 'Wrapped' has no member 'clamped'self.init(wrappedValue: value, .zero...Int.max) // cannot convert value of type 'Int' to expected argument type 'Wrapped'self.init(wrappedValue: value, .zero...Int.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...Int.max) // cannot convert value of type 'Int' to expected argument type 'Wrapped'self.init(wrappedValue: value, .zero...Float.max) // type 'Float' has no member 'max'self.init(wrappedValue: value, .zero...Float.max) // cannot convert value of type 'Float' to expected argument type 'Wrapped'self.init(wrappedValue: value, .zero...Float.max) // type 'Wrapped' has no member 'zero'extension Clamped: ExpressibleByDoubleLiteral { // cannot find type 'ExpressibleByDoubleLiteral' in scopeself.init(wrappedValue: value, .zero...Double.max) // cannot convert value of type 'Double' to expected argument type 'Wrapped'self.init(wrappedValue: value, .zero...Double.max) // type 'Double' has no member 'max'self.init(wrappedValue: value, .zero...Double.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...String.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...String.max) // cannot convert value of type 'String' to expected argument type 'Wrapped'extension Clamped: ExpressibleByCharacterLiteral { // cannot find type 'ExpressibleByCharacterLiteral' in scopeself.init(wrappedValue: value, .zero...Character.max) // type 'Character' has no member 'max'self.init(wrappedValue: value, .zero...Character.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...Character.max) // cannot convert value of type 'Character' to expected argument type 'Wrapped'extension Clamped: ExpressibleByAnyInteger { // cannot find type 'ExpressibleByAnyInteger' in scopeinit(integer value: AnyInteger) { // cannot find type 'AnyInteger' in scopeself.init(wrappedValue: value, .zero...AnyInteger.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...AnyInteger.max) // cannot find 'AnyInteger' in scopeextension Clamped: ExpressibleByAnyFloat { // cannot find type 'ExpressibleByAnyFloat' in scopeinit(float value: AnyFloat) { // cannot find type 'AnyFloat' in scopeself.init(wrappedValue: value, .zero...AnyFloat.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...AnyFloat.max) // cannot find 'AnyFloat' in scopeextension Clamped: ExpressibleByAnyDouble { // cannot find type 'ExpressibleByAnyDouble' in scopeinit(double value: AnyDouble) { // cannot find type 'AnyDouble' in scopeself.init(wrappedValue: value, .zero...AnyDouble.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...AnyDouble.max) // cannot find 'AnyDouble' in scopeextension Clamped: ExpressibleByAnyString { // cannot find type 'ExpressibleByAnyString' in scopeinit(string value: AnyString) { // cannot find type 'AnyString' in scopeself.init(wrappedValue: value, .zero...AnyString.max) // cannot find 'AnyString' in scopeself.init(wrappedValue: value, .zero...AnyString.max) // type 'Wrapped' has no member 'zero'extension Clamped: ExpressibleByAnyCharacter { // cannot find type 'ExpressibleByAnyCharacter' in scopeinit(character value: AnyCharacter) { // cannot find type 'AnyCharacter' in scopeself.init(wrappedValue: value, .zero...AnyCharacter.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...AnyCharacter.max) // cannot find 'AnyCharacter' in scopeextension Clamped: ExpressibleByAnyNumeric { // cannot find type 'ExpressibleByAnyNumeric' in scopeinit(numeric value: AnyNumeric) { // cannot find type 'AnyNumeric' in scopeself.init(wrappedValue: value, .zero...AnyNumeric.max) // cannot find 'AnyNumeric' in scopeself.init(wrappedValue: value, .zero...AnyNumeric.max) // type 'Wrapped' has no member 'zero'extension Clamped: ExpressibleByAnyNumericLiteral { // cannot find type 'ExpressibleByAnyNumericLiteral' in scopeinit(numericLiteral value: AnyNumericLiteral) { // cannot find type 'AnyNumericLiteral' in scopeself.init(wrappedValue: value, .zero...AnyNumericLiteral.max) // type 'Wrapped' has no member 'zero'self.init(wrappedValue: value, .zero...AnyNumericLiteral.max) // cannot find 'AnyNumericLiteral' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
struct MyStruct {
@Clamped(wrappedValue: 0, 0...100)
var myValue: Int
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
// Example usage:
struct MyStruct {
@Clamped(wrappedValue: 0, 0...100)
var myValue: Int
}
let myStruct = MyStruct()
myStruct.myValue = 150 // Clamps to 100
print(myStruct.myValue) // Output: 100
```
set { wrappedValue = newValue.clamped(to: range) } // value of type 'Wrapped' has no member 'clamped'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped> where Wrapped: ClampedProtocol {
var wrappedValue: Wrapped.Value
var wrappedRange: ClosedRange<Wrapped.Value>
init(wrappedValue: Wrapped.Value, wrappedRange: ClosedRange<Wrapped.Value>) {
self.wrappedValue = wrappedValue
self.wrappedRange = wrappedRange
}
var wrappedValue: Wrapped.Value {
get { return wrappedValue }
set { wrappedValue = wrappedRange.clamped(newValue) }
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped> where Wrapped: ClampedProtocol {
var wrappedValue: Wrapped.Value
var wrappedRange: ClosedRange<Wrapped.Value>
init(wrappedValue: Wrapped.Value, wrappedRange: ClosedRange<Wrapped.Value>) {
self.wrappedValue = wrappedValue
self.wrappedRange = wrappedRange
}
var wrappedValue: Wrapped.Value {
get { return wrappedValue }
set { wrappedValue = wrappedRange.clamped(newValue) }
}
}
// Example usage:
let clampedInt = Clamped(wrappedValue: 10, wrappedRange: 0...100)
print(clampedInt.wrappedValue) // Output: 10
clampedInt.wrappedValue = 150
print(clampedInt.wrappedValue) // Output: 100
```
struct Clamped<Wrapped> where Wrapped: ClampedProtocol { // property wrapper type 'Clamped' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped.Value { // invalid redeclaration of 'wrappedValue'set { wrappedValue = wrappedRange.clamped(newValue) } // missing argument label 'to:' in callset { wrappedValue = wrappedRange.clamped(newValue) } // cannot assign value of type 'ClosedRange<Wrapped.Value>' to type 'Wrapped.Value'set { wrappedValue = wrappedRange.clamped(newValue) } // cannot convert value of type 'Wrapped.Value' to expected argument type 'ClosedRange<Wrapped.Value>'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
extension Wrapped where Wrapped: Comparable {
func clamped(to range: ClosedRange<Wrapped>) -> Wrapped {
return max(range.lowerBound, min(range.upperBound, self))
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
// Extension to allow clamping of values within a range.
extension Wrapped where Wrapped: Comparable {
func clamped(to range: ClosedRange<Wrapped>) -> Wrapped {
return max(range.lowerBound, min(range.upperBound, self))
}
}
```
set { wrappedValue = newValue.clamped(to: range) } // value of type 'Wrapped' has no member 'clamped'extension Wrapped where Wrapped: Comparable { // cannot find type 'Wrapped' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
extension Wrapped where Wrapped: Comparable {
func clamped(to range: ClosedRange<Wrapped>) -> Wrapped {
return max(range.lowerBound, min(range.upperBound, self))
}
}```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
// Property wrapper that clamps value within a specified range.
@propertyWrapper
struct Clamped<Wrapped>: ClampedProtocol where Wrapped: Comparable {
var wrappedValue: Wrapped
let range: ClosedRange<Wrapped>
init(wrappedValue: Wrapped, _ range: ClosedRange<Wrapped>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Wrapped {
get { wrappedValue }
set { wrappedValue = newValue.clamped(to: range) }
}
}
// Extension to allow clamping of values within a specified range.
extension Wrapped where Wrapped: Comparable {
func clamped(to range: ClosedRange<Wrapped>) -> Wrapped {
return max(range.lowerBound, min(range.upperBound, self))
}
}
```
set { wrappedValue = newValue.clamped(to: range) } // value of type 'Wrapped' has no member 'clamped'extension Wrapped where Wrapped: Comparable { // cannot find type 'Wrapped' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
struct Example {
@Logged(wrappedValue: 0, logger: { event, value in
print("\(event): \(value)")
})
var value: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage:
struct Example {
@Logged(wrappedValue: 0, logger: { event, value in
print("\(event): \(value)")
})
var value: Int
}
let example = Example()
example.value = 10 // Output: set: 10
print(example.value) // Output: get: 10
```
struct Logged<Wrapped> : LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage
struct Person {
@Logged var name: String
@Logged var age: Int
}
let person = Person(name: "Alice", age: 25)
person.name // Logs "get: Alice"
person.age = 30 // Logs "set: 30"
```
struct Logged<Wrapped>: LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
struct MyStruct {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myValue: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage
struct MyStruct {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myValue: Int
}
let myStruct = MyStruct()
myStruct.myValue = 10 // Output: Event: set, Value: 10
print(myStruct.myValue) // Output: Event: get, Value: 10
```
struct Logged<Wrapped> : LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
struct Person {
@Logged(name: "John") var name: String
@Logged(age: 30) var age: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage
struct Person {
@Logged(name: "John") var name: String
@Logged(age: 30) var age: Int
}
let person = Person()
person.name = "Jane"
person.age = 31
```
struct Logged<Wrapped>: LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("\(event): \(value)")
})
var myProperty: Int = 0
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("\(event): \(value)")
})
var myProperty: Int = 0
}
let myClass = MyClass()
myClass.myProperty = 10 // Output: set: 10
print(myClass.myProperty) // Output: get: 10
```
struct Logged<Wrapped>: LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myProperty: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped>: LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage:
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myProperty: Int
}
let myObject = MyClass()
myObject.myProperty = 10 // Logs: Event: set, Value: 10
print(myObject.myProperty) // Logs: Event: get, Value: 10
```
struct Logged<Wrapped>: LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped> {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myProperty: Int = 0
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped> {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage:
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myProperty: Int = 0
}
let myObject = MyClass()
myObject.myProperty = 10
// Output:
// Event: set, Value: 10
// Event: get, Value: 10
```
struct Logged<Wrapped> { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage:
struct Person {
@Logged var name: String
@Logged var age: Int
}
let person = Person(name: "Alice", age: 30)
person.name // Logs "get: Alice"
person.age = 31 // Logs "set: 31"
```
struct Logged<Wrapped> : LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
struct MyStruct {
@Logged(wrappedValue: 0, logger: { event, value in
print("\(event): \(value)")
})
var myProperty: Int
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Example usage
struct MyStruct {
@Logged(wrappedValue: 0, logger: { event, value in
print("\(event): \(value)")
})
var myProperty: Int
}
let myStruct = MyStruct()
myStruct.myProperty = 10 // Output: set: 10
print(myStruct.myProperty) // Output: get: 10
```
struct Logged<Wrapped> : LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
// Property wrapper that logs access and modification of the wrapped property.
@propertyWrapper
struct Logged<Wrapped> : LoggedProtocol {
var wrappedValue: Wrapped
let logger: (Event, Wrapped) -> Void
init(wrappedValue: Wrapped, logger: @escaping (Event, Wrapped) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Wrapped {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
```
struct Logged<Wrapped> : LoggedProtocol { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Wrapped { // invalid redeclaration of 'wrappedValue'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchResults: [String] = []
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchResults.append(character)
return .success(city: "London", forecast: "Sunny")
case .keyboardDeleteBackwards:
searchResults.removeLast()
return .success(city: "London", forecast: "Sunny")
case .searchButtonPress:
guard let city = searchResults.joined(separator: " ") else { return nil }
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchResults: [String] = []
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchResults.append(character)
return .success(city: "London", forecast: "Sunny")
case .keyboardDeleteBackwards:
searchResults.removeLast()
return .success(city: "London", forecast: "Sunny")
case .searchButtonPress:
guard let city = searchResults.joined(separator: " ") else { return nil }
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'searchResults.append(character) // cannot convert value of type 'Character' to expected argument type 'String'guard let city = searchResults.joined(separator: " ") else { return nil } // initializer for conditional binding must have Optional type, not 'String'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
case .keyboardDeleteBackwards:
// Handle backspace
case .searchButtonPress:
// Handle search button press
guard let city = searchBar.text else { return nil }
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
case .keyboardDeleteBackwards:
// Handle backspace
case .searchButtonPress:
// Handle search button press
guard let city = searchBar.text else { return nil }
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // 'case' label in a 'switch' must have at least one executable statementcase .keyboardDeleteBackwards: // 'case' label in a 'switch' must have at least one executable statementguard let city = searchBar.text else { return nil } // cannot find 'searchBar' in scopeprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle delete back
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
func forecast(for city: String) throws -> String {
return try provider.forecast(for: city)
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle delete back
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
func forecast(for city: String) throws -> String {
return try provider.forecast(for: city)
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle delete back
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle delete back
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Fill search bar results.
// ...
return nil
case .keyboardDeleteBackwards:
// Delete last character from search bar.
// ...
return nil
case .searchButtonPress:
// Check forecast for the city.
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Fill search bar results.
// ...
return nil
case .keyboardDeleteBackwards:
// Delete last character from search bar.
// ...
return nil
case .searchButtonPress:
// Check forecast for the city.
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Fill search bar results.
return nil
case .keyboardDeleteBackwards:
// Fill search bar results.
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Fill search bar results.
return nil
case .keyboardDeleteBackwards:
// Fill search bar results.
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle backspace
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
func forecast(for city: String) throws -> String {
return try provider.forecast(for: city)
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle backspace
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
func forecast(for city: String) throws -> String {
return try provider.forecast(for: city)
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Fill search bar results.
// ...
return nil
case .keyboardDeleteBackwards:
// Clear search bar results.
// ...
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Fill search bar results.
// ...
return nil
case .keyboardDeleteBackwards:
// Clear search bar results.
// ...
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle backspace
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
return nil
case .keyboardDeleteBackwards:
// Handle backspace
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itprotocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchResults: [String] = []
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchResults.append(character)
return nil
case .keyboardDeleteBackwards:
searchResults.removeLast()
return nil
case .searchButtonPress:
guard let city = searchResults.joined() else { return nil }
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
// Weather application provider.
// Handle user actions to fill search bar results and use WeatherProvider to check forecast.
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchResults: [String] = []
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchResults.append(character)
return nil
case .keyboardDeleteBackwards:
searchResults.removeLast()
return nil
case .searchButtonPress:
guard let city = searchResults.joined() else { return nil }
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}
```
init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'searchResults.append(character) // cannot convert value of type 'Character' to expected argument type 'String'guard let city = searchResults.joined() else { return nil } // initializer for conditional binding must have Optional type, not 'String'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
// Ensure that the deposit operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Perform the deposit operation.
self.balance += amount
// Notify the continuation that the deposit operation is complete.
continuation.resume()
}
}
func withdraw(amount: Double) async -> Bool {
// Ensure that the withdrawal operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Perform the withdrawal operation.
if self.balance >= amount {
self.balance -= amount
// Notify the continuation that the withdrawal operation is complete.
continuation.resume(returning: true)
} else {
// Notify the continuation that the withdrawal operation failed.
continuation.resume(returning: false)
}
}
}
var balance: Double {
// Ensure that the balance is thread-safe.
return await withCheckedContinuation { continuation in
// Perform the balance retrieval operation.
continuation.resume(returning: self.balance)
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
// Ensure that the deposit operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Perform the deposit operation.
self.balance += amount
// Notify the continuation that the deposit operation is complete.
continuation.resume()
}
}
func withdraw(amount: Double) async -> Bool {
// Ensure that the withdrawal operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Perform the withdrawal operation.
if self.balance >= amount {
self.balance -= amount
// Notify the continuation that the withdrawal operation is complete.
continuation.resume(returning: true)
} else {
// Notify the continuation that the withdrawal operation failed.
continuation.resume(returning: false)
}
}
}
var balance: Double {
// Ensure that the balance is thread-safe.
return await withCheckedContinuation { continuation in
// Perform the balance retrieval operation.
continuation.resume(returning: self.balance)
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'return await withCheckedContinuation { continuation in // 'async' call in a function that does not support concurrencyprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
// Ensure that the deposit operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Acquire a lock to ensure that the balance is updated atomically.
let lock = Lock()
lock.withLock {
// Update the balance.
self.balance += amount
// Notify the continuation that the deposit operation is complete.
continuation.resume()
}
}
}
func withdraw(amount: Double) async -> Bool {
// Ensure that the withdrawal operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Acquire a lock to ensure that the balance is updated atomically.
let lock = Lock()
lock.withLock {
// Check if the balance is sufficient for the withdrawal.
if self.balance >= amount {
// Update the balance.
self.balance -= amount
// Notify the continuation that the withdrawal operation is complete.
continuation.resume(returning: true)
} else {
// Notify the continuation that the withdrawal operation failed.
continuation.resume(returning: false)
}
}
}
}
var balance: Double {
// Ensure that the balance is read atomically and thread-safe.
return await withCheckedContinuation { continuation in
// Acquire a lock to ensure that the balance is read atomically.
let lock = Lock()
lock.withLock {
// Return the balance.
continuation.resume(returning: self.balance)
}
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
// Ensure that the deposit operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Acquire a lock to ensure that the balance is updated atomically.
let lock = Lock()
lock.withLock {
// Update the balance.
self.balance += amount
// Notify the continuation that the deposit operation is complete.
continuation.resume()
}
}
}
func withdraw(amount: Double) async -> Bool {
// Ensure that the withdrawal operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Acquire a lock to ensure that the balance is updated atomically.
let lock = Lock()
lock.withLock {
// Check if the balance is sufficient for the withdrawal.
if self.balance >= amount {
// Update the balance.
self.balance -= amount
// Notify the continuation that the withdrawal operation is complete.
continuation.resume(returning: true)
} else {
// Notify the continuation that the withdrawal operation failed.
continuation.resume(returning: false)
}
}
}
}
var balance: Double {
// Ensure that the balance is read atomically and thread-safe.
return await withCheckedContinuation { continuation in
// Acquire a lock to ensure that the balance is read atomically.
let lock = Lock()
lock.withLock {
// Return the balance.
continuation.resume(returning: self.balance)
}
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'await withCheckedContinuation { continuation in // generic parameter 'T' could not be inferredlet lock = Lock() // cannot find 'Lock' in scopelet lock = Lock() // cannot find 'Lock' in scopevar balance: Double { // invalid redeclaration of 'balance'let lock = Lock() // cannot find 'Lock' in scopeprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```
private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
var balance: Double {
return balance
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
var balance: Double {
return balance
}
}
```
private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
private let lock = Lock()
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
lock.withLock {
balance += amount
}
}
func withdraw(amount: Double) async -> Bool {
lock.withLock {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
var balance: Double {
get async {
lock.withLock {
return balance
}
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
private let lock = Lock()
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
lock.withLock {
balance += amount
}
}
func withdraw(amount: Double) async -> Bool {
lock.withLock {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
var balance: Double {
get async {
lock.withLock {
return balance
}
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'private let lock = Lock() // cannot find 'Lock' in scopevar balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get {
return balance
}
set {
balance = newValue
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get {
return balance
}
set {
balance = newValue
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
var balance: Double {
get async {
return balance
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
var balance: Double {
get async {
return balance
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get {
return balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get {
return balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
// Ensure that the deposit operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Lock the account balance to prevent concurrent access.
let lock = Lock()
lock.withLock {
// Perform the deposit operation.
self.balance += amount
// Notify the continuation that the deposit operation is complete.
continuation.resume()
}
}
}
func withdraw(amount: Double) async -> Bool {
// Ensure that the withdrawal operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Lock the account balance to prevent concurrent access.
let lock = Lock()
lock.withLock {
// Perform the withdrawal operation.
if self.balance >= amount {
self.balance -= amount
// Notify the continuation that the withdrawal operation is complete.
continuation.resume(returning: true)
} else {
// Notify the continuation that the withdrawal operation failed.
continuation.resume(returning: false)
}
}
}
}
var balance: Double {
// Ensure that the balance is read-only and thread-safe.
return await withCheckedContinuation { continuation in
// Lock the account balance to prevent concurrent access.
let lock = Lock()
lock.withLock {
// Notify the continuation with the current balance.
continuation.resume(returning: self.balance)
}
}
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
// Ensure that the deposit operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Lock the account balance to prevent concurrent access.
let lock = Lock()
lock.withLock {
// Perform the deposit operation.
self.balance += amount
// Notify the continuation that the deposit operation is complete.
continuation.resume()
}
}
}
func withdraw(amount: Double) async -> Bool {
// Ensure that the withdrawal operation is atomic and thread-safe.
await withCheckedContinuation { continuation in
// Lock the account balance to prevent concurrent access.
let lock = Lock()
lock.withLock {
// Perform the withdrawal operation.
if self.balance >= amount {
self.balance -= amount
// Notify the continuation that the withdrawal operation is complete.
continuation.resume(returning: true)
} else {
// Notify the continuation that the withdrawal operation failed.
continuation.resume(returning: false)
}
}
}
}
var balance: Double {
// Ensure that the balance is read-only and thread-safe.
return await withCheckedContinuation { continuation in
// Lock the account balance to prevent concurrent access.
let lock = Lock()
lock.withLock {
// Notify the continuation with the current balance.
continuation.resume(returning: self.balance)
}
}
}
}
```
private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'await withCheckedContinuation { continuation in // generic parameter 'T' could not be inferredlet lock = Lock() // cannot find 'Lock' in scopelet lock = Lock() // cannot find 'Lock' in scopevar balance: Double { // invalid redeclaration of 'balance'let lock = Lock() // cannot find 'Lock' in scopeprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await withCheckedContinuation { continuation in
// Perform the deposit operation asynchronously and update the balance.
DispatchQueue.global(qos: .background).async {
self.balance += amount
continuation.resume()
}
}
}
func withdraw(amount: Double) async -> Bool {
// Perform the withdrawal operation asynchronously and update the balance.
await withCheckedContinuation { continuation in
DispatchQueue.global(qos: .background).async {
if self.balance >= amount {
self.balance -= amount
continuation.resume(returning: true)
} else {
continuation.resume(returning: false)
}
}
}
}
var balance: Double {
// Return the balance of the account.
return balance
}
}```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
// Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await withCheckedContinuation { continuation in
// Perform the deposit operation asynchronously and update the balance.
DispatchQueue.global(qos: .background).async {
self.balance += amount
continuation.resume()
}
}
}
func withdraw(amount: Double) async -> Bool {
// Perform the withdrawal operation asynchronously and update the balance.
await withCheckedContinuation { continuation in
DispatchQueue.global(qos: .background).async {
if self.balance >= amount {
self.balance -= amount
continuation.resume(returning: true)
} else {
continuation.resume(returning: false)
}
}
}
}
var balance: Double {
// Return the balance of the account.
return balance
}
}
```
private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'self.balance += amount // actor-isolated property 'balance' can not be mutated from a Sendable closure; this is an error in Swift 6if self.balance >= amount { // actor-isolated property 'balance' can not be referenced from a Sendable closure; this is an error in Swift 6self.balance -= amount // actor-isolated property 'balance' can not be mutated from a Sendable closure; this is an error in Swift 6var balance: Double { // invalid redeclaration of 'balance'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var projectedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var projectedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
}
}
}
```
cachedValue = wrappedValue() // cannot assign to property: 'self' is immutablecachedValue = wrappedValue() // cannot call value of non-function type 'Value'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Cached<Value> {
self
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue
}
return cachedValue ?? wrappedValue
}
set {
cachedValue = newValue
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Cached<Value> {
self
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue
}
return cachedValue ?? wrappedValue
}
set {
cachedValue = newValue
}
}
}
```
struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'cachedValue = wrappedValue // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
private var cache: Value?
private let condition: () -> Bool
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool, compute: @escaping () -> Value) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.compute = compute
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = newValue }
}
var wrappedValue: Value {
get {
if condition() {
cache = compute()
}
return cache ?? wrappedValue
}
set {
wrappedValue = newValue
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
private var cache: Value?
private let condition: () -> Bool
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool, compute: @escaping () -> Value) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.compute = compute
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = newValue }
}
var wrappedValue: Value {
get {
if condition() {
cache = compute()
}
return cache ?? wrappedValue
}
set {
wrappedValue = newValue
}
}
}
```
struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'struct Cached<Value>: CachedProperty { // type 'Cached<Value>' does not conform to protocol 'CachedProperty'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'cache = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
cachedValue = nil
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
cachedValue = nil
}
}
}
```
struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'cachedValue = wrappedValue() // cannot assign to property: 'self' is immutablecachedValue = wrappedValue() // cannot call value of non-function type 'Value'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var projectedValue: Value {
get {
if condition() {
cachedValue = wrappedValue
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
cachedValue = nil
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var projectedValue: Value {
get {
if condition() {
cachedValue = wrappedValue
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
cachedValue = nil
}
}
}
```
cachedValue = wrappedValue // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Cached<Value> {
return self
}
var wrappedValue: Value {
get {
if condition() {
return wrappedValue
} else {
return wrappedValue
}
}
set {
wrappedValue = newValue
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Cached<Value> {
return self
}
var wrappedValue: Value {
get {
if condition() {
return wrappedValue
} else {
return wrappedValue
}
}
set {
wrappedValue = newValue
}
}
}
```
struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
typealias WrappedValue = Value
private var wrappedValue: Value
private var condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue!
}
set {
cachedValue = nil
wrappedValue = newValue
}
}
}
struct Example {
@Cached(wrappedValue: { "Hello, World!" }, condition: { true })
var cachedValue: String
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
typealias WrappedValue = Value
private var wrappedValue: Value
private var condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue!
}
set {
cachedValue = nil
wrappedValue = newValue
}
}
}
// Example usage:
struct Example {
@Cached(wrappedValue: { "Hello, World!" }, condition: { true })
var cachedValue: String
}
let example = Example()
print(example.cachedValue) // Output: "Hello, World!"
example.cachedValue = "New value"
print(example.cachedValue) // Output: "New value"
```
struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'cachedValue = wrappedValue() // cannot call value of non-function type 'Value'cachedValue = wrappedValue() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
typealias Value = Value
private var wrappedValue: Value
private var condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
cachedValue = nil
}
}
}
class MyClass {
@Cached(wrappedValue: 0, condition: { $0 > 0 })
var myValue: Int {
return myValue
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
typealias Value = Value
private var wrappedValue: Value
private var condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.cachedValue = nil
}
var wrappedValue: Value {
get {
if condition() {
cachedValue = wrappedValue()
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
cachedValue = nil
}
}
}
// Example usage:
class MyClass {
@Cached(wrappedValue: 0, condition: { $0 > 0 })
var myValue: Int {
return myValue
}
}
```
struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'cachedValue = wrappedValue() // cannot call value of non-function type 'Value'cachedValue = wrappedValue() // cannot assign to property: 'self' is immutable@Cached(wrappedValue: 0, condition: { $0 > 0 }) // property wrapper cannot be applied to a computed propertyreturn myValue // attempting to access 'myValue' within its own getterprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Value {
get {
if condition() {
cachedValue = wrappedValue
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Value {
get {
if condition() {
cachedValue = wrappedValue
}
return cachedValue ?? wrappedValue
}
set {
wrappedValue = newValue
}
}
}
```
cachedValue = wrappedValue // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Value {
get {
if condition() {
return wrappedValue
} else {
return wrappedValue
}
}
set {
wrappedValue = newValue
}
}
}```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
// Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
var projectedValue: Value {
get {
if condition() {
return wrappedValue
} else {
return wrappedValue
}
}
set {
wrappedValue = newValue
}
}
}
```
// XCTAssertEqual failed: (1) is not equal to (2)infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>><A, B, C>(f: (B) -> C, g: (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>><A, B, C>(f: (B) -> C, g: (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}
```
let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in g(f(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in g(f(a)) }
}
```
{ a in g(f(a)) } // cannot convert value of type 'C' to expected argument type 'A'{ a in g(f(a)) } // cannot convert value of type 'A' to expected argument type 'B'{ a in g(f(a)) } // cannot convert value of type 'B' to closure result type 'C'let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in g(f(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in g(f(a)) }
}
```
{ a in g(f(a)) } // cannot convert value of type 'C' to expected argument type 'A'{ a in g(f(a)) } // cannot convert value of type 'A' to expected argument type 'B'{ a in g(f(a)) } // cannot convert value of type 'B' to closure result type 'C'let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence { higherThan: BinaryOperatorPrecedence }
// Custom precedence group FunctionCompositionPrecedence that has a higher precedence than the BinaryOperatorPrecedence.
```
infix operator >>>: FunctionCompositionPrecedence // unknown precedence group 'FunctionCompositionPrecedence'let composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
lowerThan: MultiplicationPrecedence
}
func >>><A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
lowerThan: MultiplicationPrecedence
}
// Function composition operator
func >>><A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}
```
let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}
```
let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence { higherThan: BinaryOperatorPrecedence }
```
infix operator >>>: FunctionCompositionPrecedence // unknown precedence group 'FunctionCompositionPrecedence'let composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in g(f(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in g(f(a)) }
}
// Example usage:
let square = { x in x * x }
let double = { x in x * 2 }
let addOne = { x in x + 1 }
let composedFunction = square >>> double >>> addOne
let result = composedFunction(3) // 25
```
{ a in g(f(a)) } // cannot convert value of type 'C' to expected argument type 'A'{ a in g(f(a)) } // cannot convert value of type 'A' to expected argument type 'B'{ a in g(f(a)) } // cannot convert value of type 'B' to closure result type 'C'let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
// Function composition operator
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}
```
let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}```swift
infix operator >>>: FunctionCompositionPrecedence
// Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
precedencegroup FunctionCompositionPrecedence {
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (B) -> C, g: @escaping (A) -> B) -> (A) -> C {
{ a in f(g(a)) }
}
```
let composedFunction = doubleDescription >>> stringCount // cannot convert value of type '(Double) -> String' to expected argument type '(Int) -> String'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
// Create a new SHA-256 hash context.
let context = SHA256.Context()
// Set the buffer size for the hash context.
context.updateBufferSize = bufferSize
// Create a new buffer to hold the hash result.
var hashBuffer = [UInt8](repeating: 0, count: context.hashSize)
// Read data from the input stream into the buffer.
while let data = inputStream.read(bufferSize) {
context.update(data)
}
// Finalize the hash computation and store the result in the hash buffer.
context.finalize()
context.copyHash(to: &hashBuffer)
// Return the hash result as a SHA256Digest object.
return SHA256Digest(hash: hashBuffer)
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
// Create a new SHA-256 hash context.
let context = SHA256.Context()
// Set the buffer size for the hash context.
context.updateBufferSize = bufferSize
// Create a new buffer to hold the hash result.
var hashBuffer = [UInt8](repeating: 0, count: context.hashSize)
// Read data from the input stream into the buffer.
while let data = inputStream.read(bufferSize) {
context.update(data)
}
// Finalize the hash computation and store the result in the hash buffer.
context.finalize()
context.copyHash(to: &hashBuffer)
// Return the hash result as a SHA256Digest object.
return SHA256Digest(hash: hashBuffer)
}
```
let context = SHA256.Context() // type 'SHA256' has no member 'Context'while let data = inputStream.read(bufferSize) { // missing argument for parameter #1 in callreturn SHA256Digest(hash: hashBuffer) // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, count: bytesRead)
}
return digest.finalize()
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, count: bytesRead)
}
return digest.finalize()
}
// Example usage:
let inputStream = InputStream(fileAtPath: "path/to/file")!
inputStream.open()
let hash = computeSHA256Hash(of: inputStream, bufferSize: 1024)
print("SHA-256 hash: \(hash)")
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) { // initializer for conditional binding must have Optional type, not 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead = 0
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == -1 {
// Handle error
break
} else if bytesRead == 0 {
// End of stream
break
}
digest.update(&buffer, length: bytesRead)
}
return digest
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead = 0
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == -1 {
// Handle error
break
} else if bytesRead == 0 {
// End of stream
break
}
digest.update(&buffer, length: bytesRead)
}
return digest
}
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, length: bytesRead)
}
return digest.finalize()
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, length: bytesRead)
}
return digest.finalize()
}
// Example usage:
let inputStream = InputStream(fileAtPath: "path/to/your/file")!
inputStream.open()
let bufferSize = 1024
let hash = computeSHA256Hash(of: inputStream, bufferSize: bufferSize)
// Print the hash in hexadecimal format
print(hash.hexString)
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) { // initializer for conditional binding must have Optional type, not 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int = 0
while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 {
digest.update(&buffer, length: bytesRead)
}
return digest
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int = 0
while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 {
digest.update(&buffer, length: bytesRead)
}
return digest
}
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 { // binary operator '>' cannot be applied to operands of type '()' and 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while true {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == -1 {
// Handle error
break
} else if bytesRead == 0 {
// End of stream
break
}
digest.update(&buffer, length: bytesRead)
}
return digest
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while true {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == -1 {
// Handle error
break
} else if bytesRead == 0 {
// End of stream
break
}
digest.update(&buffer, length: bytesRead)
}
return digest
}
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, length: bytesRead)
}
return digest.finalize()
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, length: bytesRead)
}
return digest.finalize()
}
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) { // initializer for conditional binding must have Optional type, not 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, count: bytesRead)
}
return digest.finalize()
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, count: bytesRead)
}
return digest.finalize()
}
// Example usage:
let inputStream = InputStream(fileAtPath: "path/to/your/file")!
inputStream.open()
let bufferSize = 1024
let hash = computeSHA256Hash(of: inputStream, bufferSize: bufferSize)
print("SHA-256 Hash: \(hash.hexString)")
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) { // initializer for conditional binding must have Optional type, not 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var buffer = [UInt8](repeating: 0, count: bufferSize)
var hash = SHA256Digest()
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
hash.update(&buffer, count: bytesRead)
}
return hash
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var buffer = [UInt8](repeating: 0, count: bufferSize)
var hash = SHA256Digest()
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
hash.update(&buffer, count: bytesRead)
}
return hash
}
```
var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) { // initializer for conditional binding must have Optional type, not 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, count: bytesRead)
}
return digest.finalize()
}```swift
import CryptoKit
// Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var digest = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) {
digest.update(&buffer, count: bytesRead)
}
return digest.finalize()
}
// Example usage:
let inputStream = InputStream(fileAtPath: "path/to/your/file")!
inputStream.open()
let bufferSize = 1024
let hash = computeSHA256Hash(of: inputStream, bufferSize: bufferSize)
// Print the hash as a hexadecimal string
let hexString = hash.map { String(format: "%02hhx", $0) }.joined()
print("SHA-256 Hash: \(hexString)")
```
var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer, maxLength: bufferSize) { // initializer for conditional binding must have Optional type, not 'Int'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let string = String(bytes: tuple16, encoding: .utf8)
self.init(string ?? "")
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let string = String(bytes: tuple16, encoding: .utf8)
self.init(string ?? "")
}
}
```
let string = String(bytes: tuple16, encoding: .utf8) // type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') cannot conform to 'Sequence'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: 16)
defer {
buffer.deallocate()
}
buffer.initialize(from: tuple16)
self = String(cString: buffer, encoding: .utf8)!
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: 16)
defer {
buffer.deallocate()
}
buffer.initialize(from: tuple16)
self = String(cString: buffer, encoding: .utf8)!
}
}
```
buffer.initialize(from: tuple16) // type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') cannot conform to 'Collection'self = String(cString: buffer, encoding: .utf8)! // cannot convert value of type 'UnsafeMutablePointer<UInt8>' to expected argument type 'UnsafePointer<CChar>' (aka 'UnsafePointer<Int8>') because initializer 'init(cString:encoding:)' was not imported from C headertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8)
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8)
}
}
// Example usage:
let tuple16: Tuple16 = (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
let stringFromTuple = String(tuple16: tuple16)
print(stringFromTuple) // Output: ""
```
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16)) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafeRawPointer'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: 16)
self.init(data: stringData, encoding: .utf8) ?? ""
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: 16)
self.init(data: stringData, encoding: .utf8) ?? ""
}
}
```
let stringData = Data(bytes: tuple16, count: 16) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafeRawPointer'self.init(data: stringData, encoding: .utf8) ?? "" // cannot convert value of type 'String' to expected argument type '()'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = tuple16.map { $0 }
let string = String(bytes: bytes, encoding: .utf8)
self = string ?? ""
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let bytes = tuple16.map { $0 }
let string = String(bytes: bytes, encoding: .utf8)
self = string ?? ""
}
}
```
let bytes = tuple16.map { $0 } // value of tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') has no member 'map'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: 16)
defer {
buffer.deallocate()
}
buffer.initialize(from: tuple16)
self = String(cString: buffer)
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: 16)
defer {
buffer.deallocate()
}
buffer.initialize(from: tuple16)
self = String(cString: buffer)
}
}
```
buffer.initialize(from: tuple16) // type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') cannot conform to 'Collection'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8)
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8)
}
}
// Example usage:
let tuple16: Tuple16 = (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
let stringFromTuple = String(tuple16: tuple16)
print(stringFromTuple) // Output: ""
```
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16)) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafeRawPointer'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8) ?? ""
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8) ?? ""
}
}
// Example usage:
let tuple16 = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
let string = String(tuple16: tuple16)
print(string) // Output: "0123456789101112131415"
```
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16)) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafeRawPointer'self.init(data: stringData, encoding: .utf8) ?? "" // cannot convert value of type 'String' to expected argument type '()'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8) ?? ""
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8) ?? ""
}
}
```
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16)) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafeRawPointer'self.init(data: stringData, encoding: .utf8) ?? "" // cannot convert value of type 'String' to expected argument type '()'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8)
}
}```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
// Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
extension String {
init(tuple16: Tuple16) {
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16))
self.init(data: stringData, encoding: .utf8)
}
}
// Example usage:
let tuple16 = (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
let cString = String(tuple16: tuple16)
print(cString) // Output: ""
```
let stringData = Data(bytes: tuple16, count: MemoryLayout.size(ofValue: tuple16)) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafeRawPointer'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'data'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'data'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs)
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs)
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress && lhs.size == rhs.size // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'data'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'data'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && lhs.data == rhs.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs)
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs)
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs)
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs)
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatDescription == rhs.pixelFormatDescription && CVPixelBufferGetBaseAddress(lhs) == CVPixelBufferGetBaseAddress(rhs) // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatDescription'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress
}```swift
import CoreVideo
// Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress
}
```
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
let privateItem = PrivateItem(value: item.value)
privateItems.append(privateItem)
}
return privateItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
// Function to convert an array of structs with public integer fields into an array of private structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
let privateItem = PrivateItem(value: item.value)
privateItems.append(privateItem)
}
return privateItems
}
```
let publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
// Example usage
let privateItems = [PrivateItem(value: 1), PrivateItem(value: 2), PrivateItem(value: 3)]
let publicItems = reveal(items: privateItems)
print(publicItems) // Output: [PublicItem(value: 1), PublicItem(value: 2), PublicItem(value: 3)]
```
let publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
privateItems.append(PrivateItem(value: item.value))
}
return privateItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
// Function to convert an array of structs with public integer fields into an array of private structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
privateItems.append(PrivateItem(value: item.value))
}
return privateItems
}
```
publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
privateItems.append(PrivateItem(value: item.value))
}
return privateItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
// Function to convert an array of structs with public integer fields into an array of private structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
privateItems.append(PrivateItem(value: item.value))
}
return privateItems
}
```
publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
privateItems.append(PrivateItem(value: item.value))
}
return privateItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
// Function to convert an array of structs with public integer fields into an array of private structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
privateItems.append(PrivateItem(value: item.value))
}
return privateItems
}
```
publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
```
let publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
// Example usage
let privateItems = [PrivateItem(value: 1), PrivateItem(value: 2), PrivateItem(value: 3)]
let publicItems = reveal(items: privateItems)
print(publicItems) // Output: [PublicItem(value: 1), PublicItem(value: 2), PublicItem(value: 3)]
```
publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
let privateItem = PrivateItem(value: item.value)
privateItems.append(privateItem)
}
return privateItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
// Function to convert an array of structs with public integer fields into an array of private structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
let privateItem = PrivateItem(value: item.value)
privateItems.append(privateItem)
}
return privateItems
}
```
let publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
func revealWithCustomStruct(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
func revealWithCustomStructAndCustomStruct(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by using a custom struct with a public integer field and a private integer field.
func revealWithCustomStruct(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by using a custom struct with a public integer field and a private integer field, and then using a custom struct with a public integer field and a private integer field to convert the array of structs with private integer fields into an array of public structs with identical integer fields.
func revealWithCustomStructAndCustomStruct(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
```
let publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levellet publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levellet publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
let privateItem = PrivateItem(value: item.value)
privateItems.append(privateItem)
}
return privateItems
}```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
// Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
let publicItem = PublicItem(value: item.value)
publicItems.append(publicItem)
}
return publicItems
}
// Function to convert an array of structs with public integer fields into an array of private structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
func conceal(items: [PublicItem]) -> [PrivateItem] {
var privateItems = [PrivateItem]()
for item in items {
let privateItem = PrivateItem(value: item.value)
privateItems.append(privateItem)
}
return privateItems
}
```
let publicItem = PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation goes here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation goes here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation goes here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation goes here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation goes here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation goes here
}
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Your implementation here
}
// Example usage:
let version1 = "1.2.3-alpha"
let version2 = "1.2.3-beta"
let result = compareVersions(version1, version2)
print(result) // Output: orderedAscending
```
} // missing return in global function expected to return 'ComparisonResult'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Split the version strings into their components
let lhsComponents = lhs.split(separator: ".")
let rhsComponents = rhs.split(separator: ".")
// Compare the major, minor, and patch versions
for i in 0..<max(lhsComponents.count, rhsComponents.count) {
let lhsVersion = Int(lhsComponents[i]) ?? 0
let rhsVersion = Int(rhsComponents[i]) ?? 0
if lhsVersion < rhsVersion {
return .orderedAscending
} else if lhsVersion > rhsVersion {
return .orderedDescending
}
}
// If all components are equal, the versions are considered the same
return .orderedSame
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Split the version strings into their components
let lhsComponents = lhs.split(separator: ".")
let rhsComponents = rhs.split(separator: ".")
// Compare the major, minor, and patch versions
for i in 0..<max(lhsComponents.count, rhsComponents.count) {
let lhsVersion = Int(lhsComponents[i]) ?? 0
let rhsVersion = Int(rhsComponents[i]) ?? 0
if lhsVersion < rhsVersion {
return .orderedAscending
} else if lhsVersion > rhsVersion {
return .orderedDescending
}
}
// If all components are equal, the versions are considered the same
return .orderedSame
}
```
// Fatal error: Index out of rangeenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Split the version strings into components
let lhsComponents = lhs.split(separator: ".")
let rhsComponents = rhs.split(separator: ".")
// Iterate over the components and compare them
for i in 0..<max(lhsComponents.count, rhsComponents.count) {
let lhsComponent = String(lhsComponents[i])
let rhsComponent = String(rhsComponents[i])
// Compare the components
if lhsComponent == rhsComponent {
continue
} else if lhsComponent < rhsComponent {
return .orderedAscending
} else {
return .orderedDescending
}
}
// If all components are equal, the versions are considered equal
return .orderedSame
}```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
// Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Split the version strings into components
let lhsComponents = lhs.split(separator: ".")
let rhsComponents = rhs.split(separator: ".")
// Iterate over the components and compare them
for i in 0..<max(lhsComponents.count, rhsComponents.count) {
let lhsComponent = String(lhsComponents[i])
let rhsComponent = String(rhsComponents[i])
// Compare the components
if lhsComponent == rhsComponent {
continue
} else if lhsComponent < rhsComponent {
return .orderedAscending
} else {
return .orderedDescending
}
}
// If all components are equal, the versions are considered equal
return .orderedSame
}
```
// Fatal error: Index out of range