Metadata
| Key | Value |
|---|---|
| engine | mlx |
| prompt | default |
| 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Invalid JSON format"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Invalid JSON format"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```
This Swift function `parse(string:)` takes a string as input and attempts to parse it as JSON. It first converts the string to data using UTF-8 encoding. If this fails, it throws a `ParsingError.invalidInput`. Otherwise, it attempts to parse the data as JSON using `JSONSerialization`. If this fails, it throws a `ParsingError.internalError` with the original error. If the parsing is successful, it returns the JSON object.typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Invalid JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Invalid JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```
This Swift function `parse(string:)` takes a string as input and attempts to parse it as JSON. It first converts the string to `Data` using UTF-8 encoding. If this fails, it throws a `ParsingError.invalidInput`.
If the string can be converted to `Data`, it then attempts to parse the `Data` as JSON using `JSONSerialization`. If this fails, it throws a `ParsingError.internalError` with the original error.
If the parsing is successful, it returns the parsed JSON as a `[String: Any]` dictionary. If the parsed JSON is not a dictionary, it throws a `ParsingError.internalError` with a custom error message.typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```
This Swift code defines a custom error type `ParsingError` that can be thrown when the JSON parser encounters an invalid input or an internal error. The `parse` function takes a string as input and attempts to parse it as JSON using `JSONSerialization`. If the parsing is successful, the function returns the parsed JSON as a dictionary. If an error occurs during parsing, the function throws a `ParsingError` with the appropriate error type.typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```
This Swift code defines a custom error type `ParsingError` that can be thrown by the `parse` function. The `parse` function takes a string as input and attempts to parse it as JSON using `JSONSerialization`. If the input string is not valid UTF-8 data, or if the JSON cannot be parsed, the function throws a `ParsingError.invalidInput` or `ParsingError.internalError` respectively.
The `ParsingError` enum has two cases: `invalidInput` and `internalError`. The `invalidInput` case is used when the input string is not valid UTF-8 data, while the `internalError` case is used when an error occurs during the parsing process.
The `parse` function returns a `JSON` dictionary, which is a type alias for `[String: Any]`. This dictionary represents the parsed JSON data. If the parsing is successful, the function returns the parsed JSON data. If an error occurs, the function throws a `ParsingError`.typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: [])
guard let dictionary = json as? JSON else {
throw ParsingError.internalError(NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Invalid JSON format"]))
}
return dictionary
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: [])
guard let dictionary = json as? JSON else {
throw ParsingError.internalError(NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Invalid JSON format"]))
}
return dictionary
} catch {
throw ParsingError.internalError(error)
}
}
```
This Swift function `parse` takes a string as input and attempts to parse it as JSON. If the string is not valid UTF-8 data, it throws a `ParsingError.invalidInput`. If the JSON is not in the expected format, it throws a `ParsingError.internalError` with a custom error message. If any other error occurs during the parsing process, it is caught and rethrown as a `ParsingError.internalError`.typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.<|im_end|>
<|im_start|>assistant
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON
guard let json = json else {
throw ParsingError.internalError(NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed to parse JSON"]))
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```
This Swift code defines a `JSON` type alias for a dictionary with string keys and any value type. It also defines a `ParsingError` enum with two cases: `invalidInput` and `internalError`. The `parse` function takes a string and attempts to parse it as JSON. If the string is not valid UTF-8 data, it throws a `ParsingError.invalidInput`. If the JSON cannot be parsed, it throws a `ParsingError.internalError` with an `NSError` containing the details of the parsing failure.indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` that represents an HTML node, either a text node or an element node. The `generate` function takes an `HTMLNode` and recursively generates the corresponding HTML string. The output of the code will be `"<div><a href="swifteval"></a></div>"`.return "<<\(name)\(attrString)>\(childString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
return "\(key)=\"\(value)\""
}.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
return "\(key)=\"\(value)\""
}.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` that represents an HTML node, either a text node or an element node. The `generate` function takes an `HTMLNode` and recursively generates the corresponding HTML string.
The `generate` function uses pattern matching to match the different cases of `HTMLNode` and generate the appropriate HTML string. For text nodes, it simply returns the content. For element nodes, it constructs the opening tag with the element name and attributes, recursively generates the children, and constructs the closing tag.
The example usage creates an `HTMLNode` representing the HTML string "<div><a href="swifteval"></a></div>", and then generates the corresponding HTML string using the `generate` function.return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
"\(key)=\"\(value)\""
}.joined(separator: " ")
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
"\(key)=\"\(value)\""
}.joined(separator: " ")
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` that represents a node in an HTML tree. It has two cases: `text` and `element`. The `text` case represents a text node, while the `element` case represents an HTML element with a name, attributes, and child nodes.
The `generate` function takes an `HTMLNode` and recursively generates the HTML representation of the tree. It uses pattern matching to match the different cases of the `HTMLNode` enum and constructs the HTML string accordingly.
The example usage creates an `HTMLNode` representing a `<div>` element with an `<a>` child element that has a `href` attribute set to "swifteval". The `generate` function is then called with this tree and the resulting HTML string is printed to the console.return "<<\(name)\(attrString)>\(childString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrs = attributes.map { key, value in
return "\(key)=\"\(value)\""
}.joined(separator: " ")
let childrenHTML = children.map { generate($0) }.joined()
return "<<\(name)\(attrs)>\(childrenHTML)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrs = attributes.map { key, value in
return "\(key)=\"\(value)\""
}.joined(separator: " ")
let childrenHTML = children.map { generate($0) }.joined()
return "<<\(name)\(attrs)>\(childrenHTML)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree)) // Output: <div><a href="swifteval"></a></div>
```
This code defines an enum `HTMLNode` that represents an HTML node, either a text node or an element node with a name, attributes, and children. The `generate` function takes an `HTMLNode` and recursively generates the corresponding HTML string. The `main` function creates an example `HTMLNode` tree and prints the generated HTML.return "<<\(name)\(attrs)>\(childrenHTML)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childrenString = children.map(generate).joined()
return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childrenString = children.map(generate).joined()
return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` that represents a node in an HTML tree. It has two cases: `text`, which represents a text node, and `element`, which represents an HTML element with a name, attributes, and children.
The `generate` function takes an `HTMLNode` and recursively generates the corresponding HTML string. It uses pattern matching to match the different cases of the `HTMLNode` enum and constructs the HTML string accordingly.
The example usage creates an `HTMLNode` representing a `<div>` element with an `<a>` child element that has an `href` attribute set to "swifteval". It then calls the `generate` function with this tree and prints the resulting HTML string.return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
"\(key)=\"\(value)\""
}.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
"\(key)=\"\(value)\""
}.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree)) // Output: "<div><a href="swifteval"></a></div>"
```
Note: The `generate` function is a recursive function that takes an `HTMLNode` and generates the corresponding HTML string. The `indirect` keyword is used to define the `HTMLNode` enum as an indirect enum, which allows it to contain other `HTMLNode` instances as its children. The `generate` function uses pattern matching to match the different cases of the `HTMLNode` enum and generate the corresponding HTML string. The `generate` function also uses string interpolation to insert the name, attributes, and children of the HTML element into the correct places in the string.return "<<\(name)\(attrString)>\(childrenString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` that represents a node in an HTML tree. It also defines a function `generate` that takes an `HTMLNode` and returns its HTML representation as a string. The `generate` function uses pattern matching to match the different cases of `HTMLNode` and construct the HTML representation accordingly. The `generate` function also uses recursion to generate the HTML representation of the child nodes.
The example usage of the code generates the HTML representation of the following tree:
```
<div>
<a href="swifteval"></a>
</div>
```
The output of the code would be:
```
<div><a href="swifteval"></a></div>
```return "<<\(name)\(attrString)>\(childString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
"\(key)=\"\(value)\""
}.joined(separator: " ")
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
"\(key)=\"\(value)\""
}.joined(separator: " ")
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>\(childString)<\/\(name)>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` that represents a tree of HTML nodes. It also defines a function `generate` that takes an `HTMLNode` and returns a string representing the HTML representation of that node. The function uses pattern matching to match the different cases of `HTMLNode` and constructs the HTML string accordingly. The `generate` function is then used to generate the HTML string for the given tree.return "<<\(name)\(attrString)>\(childString)<\/\(name)>" // invalid escape sequence in literalindirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>>\(childString)<</\(name)>>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childString = children.map { generate($0) }.joined()
return "<<\(name)\(attrString)>>\(childString)<</\(name)>>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` to represent the different types of HTML nodes in a tree structure. The `generate` function takes an `HTMLNode` and recursively generates the corresponding HTML string.
The `generate` function uses pattern matching to match the different cases of `HTMLNode`. If the node is a text node, it simply returns the content of the text node. If the node is an element node, it constructs the HTML string by concatenating the name of the element, its attributes, and the HTML strings of its children. The `attrString` is constructed by mapping over the attributes dictionary and joining the resulting key-value pairs into a string. The `childString` is constructed by mapping over the children array and joining the resulting HTML strings into a string.
The example usage of the `generate` function creates an `HTMLNode` representing the HTML string "<div><a href="swifteval"></a></div>", and then prints the generated HTML string.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 {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childrenString = children.map(generate).joined()
return "<<\(name)\(attrString)>>\(childrenString)<</\(name)>>"
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"<|im_end|>
<|im_start|>assistant
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attrString = attributes.map { key, value in
" \(key)=\"\(value)\""
}.joined()
let childrenString = children.map(generate).joined()
return "<<\(name)\(attrString)>>\(childrenString)<</\(name)>>"
}
}
let tree = HTMLNode.element("div", children: [
.element("a", attributes: ["href": "swifteval"])
])
print(generate(tree))
```
This code defines an enum `HTMLNode` to represent the different types of nodes in an HTML tree. It then defines a function `generate` that takes an `HTMLNode` and returns a string representing the HTML representation of that node.
The `generate` function uses pattern matching to match on the different types of `HTMLNode` and generate the appropriate HTML. For text nodes, it simply returns the content. For element nodes, it constructs the opening and closing tags with the appropriate name, attributes, and children.
Finally, we create an example `HTMLNode` tree and print the generated HTML.Start: a ["href": "swifteval"] // XCTAssertEqual failed: (Start: div [:]enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.split(separator: " ")
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: String(token)) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
let result = operation.calculate(left, right)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func calculate(_ left: Double, _ right: Double) -> Double {
switch self {
case .addition:
return left + right
case .subtraction:
return left - right
case .multiplication:
return left * right
case .division:
return left / right
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.split(separator: " ")
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: String(token)) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
let result = operation.calculate(left, right)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func calculate(_ left: Double, _ right: Double) -> Double {
switch self {
case .addition:
return left + right
case .subtraction:
return left - right
case .multiplication:
return left * right
case .division:
return left / right
}
}
}
// Usage
do {
let result = try calculate("2 + 2 * 2")
print(result) // Output: 8
} catch {
print(error)
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.whitespacesAndNewlines)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let b = stack.removeLast()
let a = stack.removeLast()
let result = operation.apply(a, b)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func apply(_ a: Double, _ b: Double) -> Double {
switch self {
case .addition:
return a + b
case .subtraction:
return a - b
case .multiplication:
return a * b
case .division:
return a / b
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.whitespacesAndNewlines)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let b = stack.removeLast()
let a = stack.removeLast()
let result = operation.apply(a, b)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func apply(_ a: Double, _ b: Double) -> Double {
switch self {
case .addition:
return a + b
case .subtraction:
return a - b
case .multiplication:
return a * b
case .division:
return a / b
}
}
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()").inverted)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else { throw CalculateError.invalidInput }
let b = stack.removeLast()
let a = stack.removeLast()
let result = operation.apply(a, b)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack[0]
}
enum Operation: String {
case add = "+"
case subtract = "-"
case multiply = "*"
case divide = "/"
func apply(_ a: Double, _ b: Double) -> Double {
switch self {
case .add: return a + b
case .subtract: return a - b
case .multiply: return a * b
case .divide: return a / b
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()").inverted)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else { throw CalculateError.invalidInput }
let b = stack.removeLast()
let a = stack.removeLast()
let result = operation.apply(a, b)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack[0]
}
enum Operation: String {
case add = "+"
case subtract = "-"
case multiply = "*"
case divide = "/"
func apply(_ a: Double, _ b: Double) -> Double {
switch self {
case .add: return a + b
case .subtract: return a - b
case .multiply: return a * b
case .divide: return a / b
}
}
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.whitespacesAndNewlines)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let op = token.first, ["+", "-", "*", "/"].contains(op) {
guard stack.count >= 2 else { throw CalculateError.invalidInput }
let b = stack.removeLast()
let a = stack.removeLast()
switch op {
case "+":
stack.append(a + b)
case "-":
stack.append(a - b)
case "*":
stack.append(a * b)
case "/":
guard b != 0 else { throw CalculateError.invalidInput }
stack.append(a / b)
default:
break
}
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack[0]
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.whitespacesAndNewlines)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let op = token.first, ["+", "-", "*", "/"].contains(op) {
guard stack.count >= 2 else { throw CalculateError.invalidInput }
let b = stack.removeLast()
let a = stack.removeLast()
switch op {
case "+":
stack.append(a + b)
case "-":
stack.append(a - b)
case "*":
stack.append(a * b)
case "/":
guard b != 0 else { throw CalculateError.invalidInput }
stack.append(a / b)
default:
break
}
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack[0]
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.alphanumerics.inverted)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else {
guard !stack.isEmpty, stack.count >= 2 else {
throw CalculateError.invalidInput
}
let b = stack.removeLast()
let a = stack.removeLast()
switch token {
case "+":
stack.append(a + b)
case "-":
stack.append(a - b)
case "*":
stack.append(a * b)
case "/":
guard b != 0 else {
throw CalculateError.invalidInput
}
stack.append(a / b)
default:
throw CalculateError.invalidInput
}
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.alphanumerics.inverted)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else {
guard !stack.isEmpty, stack.count >= 2 else {
throw CalculateError.invalidInput
}
let b = stack.removeLast()
let a = stack.removeLast()
switch token {
case "+":
stack.append(a + b)
case "-":
stack.append(a - b)
case "*":
stack.append(a * b)
case "/":
guard b != 0 else {
throw CalculateError.invalidInput
}
stack.append(a / b)
default:
throw CalculateError.invalidInput
}
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
```
This Swift function `calculate(_:)` takes a string as an argument and returns a `Double` value. It first separates the string into tokens using `CharacterSet.alphanumerics.inverted`, which creates a character set that contains all characters that are not alphanumeric. It then iterates over the tokens and performs the appropriate operation on the stack. If the token is a number, it is pushed onto the stack. If the token is an operator, it pops the last two numbers from the stack, performs the operation, and pushes the result back onto the stack. If the stack is empty or contains fewer than two numbers, or if the token is not a valid operator, the function throws a `CalculateError.invalidInput` error. If the stack contains more than one number after the loop, the function also throws an error. Finally, the function returns the result of the calculation, which should be the only number left on the stack. // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.whitespacesAndNewlines)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
let result = operation.calculate(left, right)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func calculate(_ left: Double, _ right: Double) -> Double {
switch self {
case .addition:
return left + right
case .subtraction:
return left - right
case .multiplication:
return left * right
case .division:
guard right != 0 else {
fatalError("Division by zero")
}
return left / right
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet.whitespacesAndNewlines)
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
let result = operation.calculate(left, right)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func calculate(_ left: Double, _ right: Double) -> Double {
switch self {
case .addition:
return left + right
case .subtraction:
return left - right
case .multiplication:
return left * right
case .division:
guard right != 0 else {
fatalError("Division by zero")
}
return left / right
}
}
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()"))
.filter { !$0.isEmpty }
.map { Double($0) ?? 0 }
var stack: [Double] = []
for token in tokens {
if token.truncatingRemainder(dividingBy: 1) == 0 {
stack.append(token)
} else {
guard let b = stack.popLast(), let a = stack.popLast() else {
throw CalculateError.invalidInput
}
let result: Double
switch token {
case "+":
result = a + b
case "-":
result = a - b
case "*":
result = a * b
case "/":
result = a / b
default:
throw CalculateError.invalidInput
}
stack.append(result)
}
}
guard let result = stack.popLast() else {
throw CalculateError.invalidInput
}
return result
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()"))
.filter { !$0.isEmpty }
.map { Double($0) ?? 0 }
var stack: [Double] = []
for token in tokens {
if token.truncatingRemainder(dividingBy: 1) == 0 {
stack.append(token)
} else {
guard let b = stack.popLast(), let a = stack.popLast() else {
throw CalculateError.invalidInput
}
let result: Double
switch token {
case "+":
result = a + b
case "-":
result = a - b
case "*":
result = a * b
case "/":
result = a / b
default:
throw CalculateError.invalidInput
}
stack.append(result)
}
}
guard let result = stack.popLast() else {
throw CalculateError.invalidInput
}
return result
}
let input = "2+2*2"
do {
let result = try calculate(input)
print("Result: \(result)")
} catch {
print("Error: \(error)")
}
```
This code defines a `calculate` function that takes a string as input and returns the result of the calculation. It uses a stack to keep track of the operands and operators. The function first splits the input string into tokens, which are the numbers and operators. It then iterates over the tokens, pushing them onto the stack if they are numbers, or performing the operation if they are operators. If the stack is empty when an operator is encountered, or if there are not enough operands on the stack to perform an operation, an error is thrown. The function finally returns the result of the calculation.case "+": // expression pattern of type 'String' cannot match values of type 'Double'case "-": // expression pattern of type 'String' cannot match values of type 'Double'case "*": // expression pattern of type 'String' cannot match values of type 'Double'case "/": // expression pattern of type 'String' cannot match values of type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.compactMap { CharacterSet.decimalDigits.contains($0) ? String($0) : nil }
var stack: [Double] = []
var operationStack: [Character] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else {
while !operationStack.isEmpty && precedence(operationStack.last!) > precedence(token) {
if let op = operationStack.popLast(), let b = stack.popLast(), let a = stack.popLast() {
stack.append(apply(op, a, b))
} else {
throw CalculateError.invalidInput
}
}
operationStack.append(token)
}
}
while !operationStack.isEmpty {
if let op = operationStack.popLast(), let b = stack.popLast(), let a = stack.popLast() {
stack.append(apply(op, a, b))
} else {
throw CalculateError.invalidInput
}
}
return stack.first ?? 0
}
func precedence(_ op: Character) -> Int {
switch op {
case "+", "-":
return 1
case "*", "/":
return 2
default:
return 0
}
}
func apply(_ op: Character, _ a: Double, _ b: Double) -> Double {
switch op {
case "+":
return a + b
case "-":
return a - b
case "*":
return a * b
case "/":
return a / b
default:
return 0
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.compactMap { CharacterSet.decimalDigits.contains($0) ? String($0) : nil }
var stack: [Double] = []
var operationStack: [Character] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else {
while !operationStack.isEmpty && precedence(operationStack.last!) > precedence(token) {
if let op = operationStack.popLast(), let b = stack.popLast(), let a = stack.popLast() {
stack.append(apply(op, a, b))
} else {
throw CalculateError.invalidInput
}
}
operationStack.append(token)
}
}
while !operationStack.isEmpty {
if let op = operationStack.popLast(), let b = stack.popLast(), let a = stack.popLast() {
stack.append(apply(op, a, b))
} else {
throw CalculateError.invalidInput
}
}
return stack.first ?? 0
}
func precedence(_ op: Character) -> Int {
switch op {
case "+", "-":
return 1
case "*", "/":
return 2
default:
return 0
}
}
func apply(_ op: Character, _ a: Double, _ b: Double) -> Double {
switch op {
case "+":
return a + b
case "-":
return a - b
case "*":
return a * b
case "/":
return a / b
default:
return 0
}
}
```let tokens = string.compactMap { CharacterSet.decimalDigits.contains($0) ? String($0) : nil } // cannot convert value of type 'String.Element' (aka 'Character') to expected argument type 'Unicode.Scalar'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()"))
.filter { !$0.isEmpty }
.map { Double($0) ?? 0 }
var stack: [Double] = []
var operators: [Character] = []
for token in tokens {
if let op = operators.last, precedence(op) < precedence(token) {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(calculate(a, b, op))
operators.removeLast()
}
stack.append(token)
operators.append(token)
}
while let op = operators.last {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(calculate(a, b, op))
operators.removeLast()
}
return stack.first ?? 0
}
func calculate(_ a: Double, _ b: Double, _ op: Character) -> Double {
switch op {
case "+": return a + b
case "-": return a - b
case "*": return a * b
case "/": return a / b
default: throw CalculateError.invalidInput
}
}
func precedence(_ op: Character) -> Int {
switch op {
case "+", "-": return 1
case "*", "/": return 2
default: return 0
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()"))
.filter { !$0.isEmpty }
.map { Double($0) ?? 0 }
var stack: [Double] = []
var operators: [Character] = []
for token in tokens {
if let op = operators.last, precedence(op) < precedence(token) {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(calculate(a, b, op))
operators.removeLast()
}
stack.append(token)
operators.append(token)
}
while let op = operators.last {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(calculate(a, b, op))
operators.removeLast()
}
return stack.first ?? 0
}
func calculate(_ a: Double, _ b: Double, _ op: Character) -> Double {
switch op {
case "+": return a + b
case "-": return a - b
case "*": return a * b
case "/": return a / b
default: throw CalculateError.invalidInput
}
}
func precedence(_ op: Character) -> Int {
switch op {
case "+", "-": return 1
case "*", "/": return 2
default: return 0
}
}
```if let op = operators.last, precedence(op) < precedence(token) { // cannot convert value of type 'Double' to expected argument type 'Character'operators.append(token) // cannot convert value of type 'Double' to expected argument type 'Character'default: throw CalculateError.invalidInput // error is not handled because the enclosing function is not declared 'throws'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()"))
.filter { !$0.isEmpty }
guard !tokens.isEmpty else {
throw CalculateError.invalidInput
}
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
let result = operation.calculate(left, right)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func calculate(_ left: Double, _ right: Double) -> Double {
switch self {
case .addition:
return left + right
case .subtraction:
return left - right
case .multiplication:
return left * right
case .division:
return left / right
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".<|im_end|>
<|im_start|>assistant
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: CharacterSet(charactersIn: "+-*/()"))
.filter { !$0.isEmpty }
guard !tokens.isEmpty else {
throw CalculateError.invalidInput
}
var stack: [Double] = []
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
let result = operation.calculate(left, right)
stack.append(result)
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack[0]
}
enum Operation: String {
case addition = "+"
case subtraction = "-"
case multiplication = "*"
case division = "/"
func calculate(_ left: Double, _ right: Double) -> Double {
switch self {
case .addition:
return left + right
case .subtraction:
return left - right
case .multiplication:
return left * right
case .division:
return left / right
}
}
}
do {
let result = try calculate("2+2*2")
print(result) // Output: 6.0
} catch {
print(error)
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputfunc execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outputPipe = Pipe()
task.standardOutput = outputPipe
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let outputData = outputPipe.fileHandleForReading.readDataToEndOfFile()
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: outputData, encoding: .utf8) ?? ""
let error = String(data: errorData, encoding: .utf8) ?? ""
return (output, error)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outputPipe = Pipe()
task.standardOutput = outputPipe
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let outputData = outputPipe.fileHandleForReading.readDataToEndOfFile()
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: outputData, encoding: .utf8) ?? ""
let error = String(data: errorData, encoding: .utf8) ?? ""
return (output, error)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
task.standardOutput = stdoutPipe
let stderrPipe = Pipe()
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
task.standardOutput = stdoutPipe
let stderrPipe = Pipe()
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outputPipe = Pipe()
let errorPipe = Pipe()
task.standardOutput = outputPipe
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let outputData = outputPipe.fileHandleForReading.readDataToEndOfFile()
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: outputData, encoding: .utf8) ?? ""
let error = String(data: errorData, encoding: .utf8) ?? ""
return (output, error)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outputPipe = Pipe()
let errorPipe = Pipe()
task.standardOutput = outputPipe
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let outputData = outputPipe.fileHandleForReading.readDataToEndOfFile()
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: outputData, encoding: .utf8) ?? ""
let error = String(data: errorData, encoding: .utf8) ?? ""
return (output, error)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
task.standardOutput = stdoutPipe
let stderrPipe = Pipe()
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
task.standardOutput = stdoutPipe
let stderrPipe = Pipe()
task.standardError = stderrPipe
task.launch()
task.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.<|im_end|>
<|im_start|>assistant
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (argument: T) -> U in
if let cachedValue = cache[argument] {
return cachedValue
} else {
let result = function(argument)
cache[argument] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (argument: T) -> U in
if let cachedValue = cache[argument] {
return cachedValue
} else {
let result = function(argument)
cache[argument] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.<|im_end|>
<|im_start|>assistant
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let cachedValue = cache[arg] {
return cachedValue
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed after \(attempts) attempts"])
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed after \(attempts) attempts"])
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after all attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after all attempts"])
}
```
This function takes a closure `task` that performs the task to be retried, and an integer `attempts` that specifies the number of times the task should be retried. It then attempts to execute the task. If the task throws an error, it continues to the next attempt. If the task is successful, it returns the result. If all attempts fail, it throws an error.func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after all attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after all attempts"])
}
```
This function takes a closure `task` that performs the task and an integer `attempts` that specifies how many times the task should be retried. If the task is successful, it returns the result. If the task fails, it retries the task up to `attempts` times. If the task fails after `attempts` times, it throws an error.func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}
```
This function takes a closure `task` that performs some operation that may throw an error, and an integer `attempts` that specifies how many times the task should be retried before failing. The function will repeatedly attempt to execute the task, and if it fails, it will retry up to the specified number of times. If the task fails after all the attempts, the function will throw an error.func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed after \(attempts) attempts"])
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}
```
This function takes in an integer `attempts` and a closure `task` that returns a value of type `T`. It attempts to execute the task, and if it fails, it retries the task up to `attempts` times. If the task fails after `attempts` attempts, it throws an error.func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}
```
This function takes a closure `task` that performs some operation and may throw an error. It will attempt to run this task up to `attempts` times. If the task succeeds, it returns the result. If the task throws an error, it will retry the task up to `attempts` times. If the task fails after `attempts` attempts, it throws an error with a description indicating that the task failed after `attempts` attempts.func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}
```
This function takes an integer `attempts` and a closure `task` as parameters. It attempts to execute the task. If the task throws an error, it retries the task up to `attempts` times. If the task is successful, it returns the result. If the task fails after `attempts` times, it throws an error.func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.<|im_end|>
<|im_start|>assistant
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw NSError(domain: "", code: -1, userInfo: [NSLocalizedDescriptionKey: "Task failed after \(attempts) attempts"])
}
```
This function takes a closure `task` that performs some operation that might throw an error, and an integer `attempts` that specifies how many times the task should be retried before failing. It repeatedly attempts to execute the task, and if it throws an error, it continues to the next attempt. If the task is successful, it returns the result. If the task fails after the specified number of attempts, it throws an error.protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = { factory() as Any }
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories[ObjectIdentifier(type)] {
return factory() as? T
}
return nil
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = { factory() as Any }
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories[ObjectIdentifier(type)] {
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 factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[String(describing: type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories[String(describing: type)] as? () -> T {
return factory()
}
return nil
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[String(describing: type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories[String(describing: type)] 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 factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[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 factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] as? () -> T else {
return nil
}
return factory()
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = { factory() as Any }
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories[ObjectIdentifier(type)] {
return factory() as? T
}
return nil
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.<|im_end|>
<|im_start|>assistant
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = { factory() as Any }
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories[ObjectIdentifier(type)] {
return factory() as? T
}
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 nextState = transitions[state]?[event] else {
print("No transition found for state: \(state) and event: \(event)")
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}
enum AppState: Hashable {
case idle, loading, loaded
}
enum AppEvent: Hashable {
case startLoading
case dataLoaded
}
class AppStateMachine: StateMachine<AppState, AppEvent> {
init() {
super.init(state: .idle)
registerTransition(from: .idle, to: .loading, event: .startLoading)
registerTransition(from: .loading, to: .loaded, event: .dataLoaded)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
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 nextState = transitions[state]?[event] else {
print("No transition found for state: \(state) and event: \(event)")
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}
// Example usage
enum AppState: Hashable {
case idle, loading, loaded
}
enum AppEvent: Hashable {
case startLoading
case dataLoaded
}
class AppStateMachine: StateMachine<AppState, AppEvent> {
init() {
super.init(state: .idle)
registerTransition(from: .idle, to: .loading, event: .startLoading)
registerTransition(from: .loading, to: .loaded, event: .dataLoaded)
}
}
let appStateMachine = AppStateMachine()
appStateMachine.trigger(event: .startLoading)
print(appStateMachine.state) // Output: loading
appStateMachine.trigger(event: .dataLoaded)
print(appStateMachine.state) // Output: loaded
```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<State: Hashable, Event: Hashable>: StateMachineProtocol {
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 nextState = transitions[currentState]?[event] else {
print("Invalid transition from state \(currentState) with event \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
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 nextState = transitions[currentState]?[event] else {
print("Invalid transition from state \(currentState) with event \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}
```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<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("No transition found for state: \(currentState) and event: \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}
enum AppState: Hashable {
case loggedOut, loggedIn
}
enum AppEvent: Hashable {
case login, logout
}
class AppStateMachine: StateMachine<AppState, AppEvent> {
init() {
super.init(state: .loggedOut)
registerTransition(from: .loggedOut, to: .loggedIn, event: .login)
registerTransition(from: .loggedIn, to: .loggedOut, event: .logout)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("No transition found for state: \(currentState) and event: \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}
// Example usage
enum AppState: Hashable {
case loggedOut, loggedIn
}
enum AppEvent: Hashable {
case login, logout
}
class AppStateMachine: StateMachine<AppState, AppEvent> {
init() {
super.init(state: .loggedOut)
registerTransition(from: .loggedOut, to: .loggedIn, event: .login)
registerTransition(from: .loggedIn, to: .loggedOut, event: .logout)
}
}
let appStateMachine = AppStateMachine()
appStateMachine.trigger(event: .login)
print(appStateMachine.state) // Output: loggedIn
appStateMachine.trigger(event: .logout)
print(appStateMachine.state) // Output: loggedOut
```} // 'required' initializer 'init(state:)' must be provided by subclass of '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<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("Transition from \(currentState) to \(event) is not registered")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
enum AppState: Hashable {
case idle
case loading
case loaded
}
enum AppEvent: Hashable {
case startLoading
case dataLoaded
}
class AppStateMachine: StateMachine<AppState, AppEvent> {
init() {
super.init(state: .idle)
registerTransition(from: .idle, to: .loading, event: .startLoading)
registerTransition(from: .loading, to: .loaded, event: .dataLoaded)
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("Transition from \(currentState) to \(event) is not registered")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
// Example usage
enum AppState: Hashable {
case idle
case loading
case loaded
}
enum AppEvent: Hashable {
case startLoading
case dataLoaded
}
class AppStateMachine: StateMachine<AppState, AppEvent> {
init() {
super.init(state: .idle)
registerTransition(from: .idle, to: .loading, event: .startLoading)
registerTransition(from: .loading, to: .loaded, event: .dataLoaded)
}
}
let stateMachine = AppStateMachine()
stateMachine.trigger(event: .startLoading)
print(stateMachine.state) // Output: loading
stateMachine.trigger(event: .dataLoaded)
print(stateMachine.state) // Output: loaded
```} // 'required' initializer 'init(state:)' must be provided by subclass of '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<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("Invalid transition from state \(currentState) with event \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("Invalid transition from state \(currentState) with event \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```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 transitions: [State: [Event: State]] = [:]
private(set) var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
print("No transition registered for state: \(state) and event: \(event)")
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var transitions: [State: [Event: State]] = [:]
private(set) var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
print("No transition registered for state: \(state) and event: \(event)")
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```
This is a simple implementation of a finite state machine in Swift. The `StateMachine` protocol defines the basic functionality of a state machine, and the `StateMachine` class implements this protocol. The `StateMachine` class has a dictionary `transitions` that maps states to dictionaries of events to states, which represents the possible transitions between states. The `trigger` method changes the current state to the next state based on the registered transition, and the `registerTransition` method registers a new transition.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 currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("No transition registered for event: \(event) from state: \(currentState)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("No transition registered for event: \(event) from state: \(currentState)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]?[event] = to
}
}
```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 currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("Invalid transition from state \(currentState) with event \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
guard let nextState = transitions[currentState]?[event] else {
print("Invalid transition from state \(currentState) with event \(event)")
return
}
currentState = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```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 currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[currentState]?[event] {
currentState = nextState
} else {
print("Invalid transition from state \(currentState) with event \(event)")
}
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]![event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var currentState: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[currentState]?[event] {
currentState = nextState
} else {
print("Invalid transition from state \(currentState) with event \(event)")
}
}
func registerTransition(from: State, to: State, event: Event) {
if transitions[from] == nil {
transitions[from] = [:]
}
transitions[from]![event] = to
}
}
```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 transitions: [State: [Event: State]] = [:]
private(set) var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.<|im_end|>
<|im_start|>assistant
```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)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var transitions: [State: [Event: State]] = [:]
private(set) var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```
This is a simple implementation of a finite state machine in Swift. The `StateMachineProtocol` defines the basic requirements for a state machine, and the `StateMachine` class implements this protocol.
The `StateMachine` class has a dictionary `transitions` that maps each state to a dictionary of events to the next state. The `trigger` function looks up the next state based on the current state and the event, and updates the state if a transition is found.
The `registerTransition` function allows you to register a custom transition between states for a specific event.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 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1", size: 100),
.file(name: "file2", size: 200),
.directory(name: "subdir", contents: [
.file(name: "file3", size: 300),
.directory(name: "subsubdir", contents: [
.file(name: "file4", size: 400)
])
])
])
print("Total size: \(fileSystem.totalSize)") // Output: Total size: 1000
print("Files count: \(fileSystem.filesCount)") // Output: Files count: 4
print("Tree depth: \(fileSystem.treeDepth)") // Output: Tree depth: 4
```return 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 size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1.txt", size: 100),
.file(name: "file2.txt", size: 200),
.directory(name: "folder1", contents: [
.file(name: "file3.txt", size: 300),
.directory(name: "folder2", contents: [
.file(name: "file4.txt", size: 400)
])
])
])
print("Total size: \(fileSystem.totalSize)")
print("Files count: \(fileSystem.filesCount)")
print("Tree depth: \(fileSystem.treeDepth)")
```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 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}
```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 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1.txt", size: 1024),
.directory(name: "folder1", contents: [
.file(name: "file2.txt", size: 2048),
.directory(name: "folder2", contents: [
.file(name: "file3.txt", size: 3072)
])
])
])
print("Total size: \(fileSystem.totalSize)") // Output: Total size: 6144
print("Files count: \(fileSystem.filesCount)") // Output: Files count: 3
print("Tree depth: \(fileSystem.treeDepth)") // Output: Tree depth: 4
```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 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1.txt", size: 1024),
.directory(name: "folder1", contents: [
.file(name: "file2.txt", size: 2048),
.directory(name: "folder2", contents: [
.file(name: "file3.txt", size: 3072)
])
])
])
print("Total size: \(fileSystem.totalSize)")
print("Files count: \(fileSystem.filesCount)")
print("Tree depth: \(fileSystem.treeDepth)")
```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 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max()!
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max()!
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1.txt", size: 1024),
.directory(name: "folder1", contents: [
.file(name: "file2.txt", size: 2048),
.directory(name: "folder2", contents: [
.file(name: "file3.txt", size: 3072)
])
])
])
print("Total size: \(fileSystem.totalSize) bytes")
print("Files count: \(fileSystem.filesCount)")
print("Tree depth: \(fileSystem.treeDepth)")
``` // Fatal error: Unexpectedly found nil while unwrapping an Optional valueindirect 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 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max()!
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max()!
}
}
}
```
This Swift code defines a `FileSystemNode` enum that represents either a file or a directory in a file system. It also defines a `FileSystemInfo` protocol that defines properties for calculating the total size of all files, the number of files, and the depth of the file system tree. The `FileSystemNode` enum conforms to the `FileSystemInfo` protocol by implementing the required properties. // Fatal error: Unexpectedly found nil while unwrapping an Optional valueindirect 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 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1.txt", size: 1024),
.directory(name: "folder1", contents: [
.file(name: "file2.txt", size: 2048),
.directory(name: "folder2", contents: [
.file(name: "file3.txt", size: 3072)
])
])
])
print("Total size: \(fileSystem.totalSize)")
print("Files count: \(fileSystem.filesCount)")
print("Tree depth: \(fileSystem.treeDepth)")
```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 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1", size: 100),
.directory(name: "subdir1", contents: [
.file(name: "file2", size: 200),
.directory(name: "subsubdir1", contents: [
.file(name: "file3", size: 300)
])
]),
.directory(name: "subdir2", contents: [
.file(name: "file4", size: 400)
])
])
print("Total size: \(fileSystem.totalSize)")
print("Files count: \(fileSystem.filesCount)")
print("Tree depth: \(fileSystem.treeDepth)")
```return 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 size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max()!
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```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 }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, 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 1
case .directory(_, let contents):
return 1 + contents.map { $0.treeDepth }.max()!
}
}
}
let fileSystem = FileSystemNode.directory(name: "root", contents: [
.file(name: "file1", size: 100),
.file(name: "file2", size: 200),
.directory(name: "subdir", contents: [
.file(name: "file3", size: 300),
.directory(name: "subsubdir", contents: [
.file(name: "file4", size: 400)
])
])
])
print("Total size: \(fileSystem.totalSize)")
print("Files count: \(fileSystem.filesCount)")
print("Tree depth: \(fileSystem.treeDepth)")
``` // Fatal error: Unexpectedly found nil while unwrapping an Optional valueprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element>: StackProtocol {
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element>: StackProtocol {
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<Element>'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<T>: StackProtocol {
var elements: [T] = []
init() {
self.elements = []
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {
self.elements = []
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<T>: StackProtocol {
var elements: [T] = []
init() {
self.elements = []
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {
self.elements = []
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<Element>: StackProtocol {
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element>: StackProtocol {
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<Element>'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<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<T>: StackProtocol {
var elements: [T] = []
init() {
self.elements = []
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
var elements: [T] = []
init() {
self.elements = []
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'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<T>: StackProtocol {
private var elements: [T] = []
required init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.<|im_end|>
<|im_start|>assistant
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
private var elements: [T] = []
required init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```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 let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
} else if keys.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
} else if keys.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}
```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 let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
if items.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
if items.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}
```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 capacity: Int
private var dictionary: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
keys.append(key)
return dictionary[key]
}
return nil
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
keys.append(key)
dictionary[key] = newValue
if keys.count > capacity {
let keyToRemove = keys.removeFirst()
dictionary.removeValue(forKey: keyToRemove)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var capacity: Int
private var dictionary: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
keys.append(key)
return dictionary[key]
}
return nil
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
keys.append(key)
dictionary[key] = newValue
if keys.count > capacity {
let keyToRemove = keys.removeFirst()
dictionary.removeValue(forKey: keyToRemove)
}
}
}
}
```protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var capacity: Int
private var dictionary: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
keys.append(key)
return dictionary[key]
}
return nil
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
keys.append(key)
dictionary[key] = newValue
if keys.count > capacity {
let leastRecentlyUsedKey = keys.removeFirst()
dictionary.removeValue(forKey: leastRecentlyUsedKey)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var capacity: Int
private var dictionary: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
keys.append(key)
return dictionary[key]
}
return nil
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
keys.append(key)
dictionary[key] = newValue
if keys.count > capacity {
let leastRecentlyUsedKey = keys.removeFirst()
dictionary.removeValue(forKey: leastRecentlyUsedKey)
}
}
}
}
```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 dictionary: [Key: Element] = [:]
private var orderedKeys: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = dictionary[key] {
updateUsage(for: key)
return value
}
return nil
}
set {
if let value = newValue {
dictionary[key] = value
if orderedKeys.contains(key) {
updateUsage(for: key)
} else {
if orderedKeys.count == capacity {
removeLeastRecentlyUsed()
}
orderedKeys.append(key)
}
} else {
remove(for: key)
}
}
}
private func updateUsage(for key: Key) {
if let index = orderedKeys.firstIndex(of: key) {
orderedKeys.remove(at: index)
orderedKeys.append(key)
}
}
private func remove(for key: Key) {
dictionary.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func removeLeastRecentlyUsed() {
if let key = orderedKeys.first {
remove(for: key)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var dictionary: [Key: Element] = [:]
private var orderedKeys: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = dictionary[key] {
updateUsage(for: key)
return value
}
return nil
}
set {
if let value = newValue {
dictionary[key] = value
if orderedKeys.contains(key) {
updateUsage(for: key)
} else {
if orderedKeys.count == capacity {
removeLeastRecentlyUsed()
}
orderedKeys.append(key)
}
} else {
remove(for: key)
}
}
}
private func updateUsage(for key: Key) {
if let index = orderedKeys.firstIndex(of: key) {
orderedKeys.remove(at: index)
orderedKeys.append(key)
}
}
private func remove(for key: Key) {
dictionary.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func removeLeastRecentlyUsed() {
if let key = orderedKeys.first {
remove(for: key)
}
}
}
```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 let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
keys.append(key)
return items[key]
}
return nil
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
} else if keys.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
keys.append(key)
return items[key]
}
return nil
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
} else if keys.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}
```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 let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
if items.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
if items.count == capacity {
items.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
items[key] = newValue
}
}
}
```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 dictionary: [Key: Element] = [:]
private var orderedKeys: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let value = dictionary[key] else { return nil }
updateUsage(key: key)
return value
}
set {
if let value = newValue {
dictionary[key] = value
updateUsage(key: key)
} else {
dictionary.removeValue(forKey: key)
removeLeastRecentlyUsed()
}
}
}
private func updateUsage(key: Key) {
if orderedKeys.contains(key) {
orderedKeys.removeAll(where: { $0 == key })
}
orderedKeys.append(key)
if orderedKeys.count > capacity {
removeLeastRecentlyUsed()
}
}
private func removeLeastRecentlyUsed() {
if let key = orderedKeys.first {
dictionary.removeValue(forKey: key)
orderedKeys.removeFirst()
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var dictionary: [Key: Element] = [:]
private var orderedKeys: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let value = dictionary[key] else { return nil }
updateUsage(key: key)
return value
}
set {
if let value = newValue {
dictionary[key] = value
updateUsage(key: key)
} else {
dictionary.removeValue(forKey: key)
removeLeastRecentlyUsed()
}
}
}
private func updateUsage(key: Key) {
if orderedKeys.contains(key) {
orderedKeys.removeAll(where: { $0 == key })
}
orderedKeys.append(key)
if orderedKeys.count > capacity {
removeLeastRecentlyUsed()
}
}
private func removeLeastRecentlyUsed() {
if let key = orderedKeys.first {
dictionary.removeValue(forKey: key)
orderedKeys.removeFirst()
}
}
}
```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 capacity: Int
private var dictionary: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else {
return nil
}
keys.remove(at: index)
keys.append(key)
return dictionary[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
} else if keys.count == capacity {
dictionary.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
dictionary[key] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var capacity: Int
private var dictionary: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else {
return nil
}
keys.remove(at: index)
keys.append(key)
return dictionary[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
} else if keys.count == capacity {
dictionary.removeValue(forKey: keys.removeFirst())
}
keys.append(key)
dictionary[key] = newValue
}
}
}
```protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
keys.append(key)
items[key] = newValue
if items.count > capacity {
let keyToRemove = keys.removeFirst()
items.removeValue(forKey: keyToRemove)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private let capacity: Int
private var items: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let index = keys.firstIndex(of: key) else { return nil }
keys.remove(at: index)
keys.append(key)
return items[key]
}
set {
if let index = keys.firstIndex(of: key) {
keys.remove(at: index)
}
keys.append(key)
items[key] = newValue
if items.count > capacity {
let keyToRemove = keys.removeFirst()
items.removeValue(forKey: keyToRemove)
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: CacheItem<Value>] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let cacheItem = CacheItem(value: value, expirationDate: expirationDate)
cache[key] = cacheItem
}
func get(key: Key) -> Value? {
guard let cacheItem = cache[key], Date() < cacheItem.expirationDate else {
cache.removeValue(forKey: key)
return nil
}
return cacheItem.value
}
}
struct CacheItem<Value> {
let value: Value
let expirationDate: Date
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: CacheItem<Value>] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let cacheItem = CacheItem(value: value, expirationDate: expirationDate)
cache[key] = cacheItem
}
func get(key: Key) -> Value? {
guard let cacheItem = cache[key], Date() < cacheItem.expirationDate else {
cache.removeValue(forKey: key)
return nil
}
return cacheItem.value
}
}
struct CacheItem<Value> {
let value: Value
let expirationDate: Date
}
// Usage
let cache = ExpirableCache<String, Int>()
cache.put(value: 1, key: "one", expiration: 10)
cache.put(value: 2, key: "two", expiration: 5)
print(cache.get(key: "one")) // Output: Optional(1)
print(cache.get(key: "two")) // Output: Optional(2)
sleep(6)
print(cache.get(key: "one")) // Output: nil
print(cache.get(key: "two")) // Output: Optional(2)
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: CacheItem<Value>]()
private let queue = DispatchQueue(label: "com.expirablecache.queue")
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let item = CacheItem(value: value, expiration: expirationDate)
queue.async {
self.cache[key] = item
}
}
func get(key: Key) -> Value? {
var result: Value?
queue.sync {
if let item = self.cache[key], !item.isExpired {
result = item.value
}
}
return result
}
}
struct CacheItem<Value> {
let value: Value
let expiration: Date
}
extension CacheItem {
var isExpired: Bool {
return Date() > expiration
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: CacheItem<Value>]()
private let queue = DispatchQueue(label: "com.expirablecache.queue")
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let item = CacheItem(value: value, expiration: expirationDate)
queue.async {
self.cache[key] = item
}
}
func get(key: Key) -> Value? {
var result: Value?
queue.sync {
if let item = self.cache[key], !item.isExpired {
result = item.value
}
}
return result
}
}
struct CacheItem<Value> {
let value: Value
let expiration: Date
}
extension CacheItem {
var isExpired: Bool {
return Date() > expiration
}
}
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: (value: Value, expiration: Date)]()
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: (value: Value, expiration: Date)]()
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}
```
This code defines a protocol `ExpirableCacheProtocol` that defines the methods for caching and retrieving values with expiration. It then creates a class `ExpirableCache` that implements this protocol and provides a subscript method for convenient access. The subscript method automatically handles the expiration of values.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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: CacheItem<Value>]()
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let cacheItem = CacheItem(value: value, expirationDate: expirationDate)
cache[key] = cacheItem
}
func get(key: Key) -> Value? {
guard let cacheItem = cache[key], !cacheItem.isExpired else {
cache.removeValue(forKey: key)
return nil
}
return cacheItem.value
}
}
struct CacheItem<Value> {
let value: Value
let expirationDate: Date
var isExpired: Bool {
return Date() > expirationDate
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: CacheItem<Value>]()
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let cacheItem = CacheItem(value: value, expirationDate: expirationDate)
cache[key] = cacheItem
}
func get(key: Key) -> Value? {
guard let cacheItem = cache[key], !cacheItem.isExpired else {
cache.removeValue(forKey: key)
return nil
}
return cacheItem.value
}
}
struct CacheItem<Value> {
let value: Value
let expirationDate: Date
var isExpired: Bool {
return Date() > expirationDate
}
}
// Usage
let cache = ExpirableCache<String, Int>()
cache.put(value: 1, key: "one", expiration: 5)
cache.put(value: 2, key: "two", expiration: 10)
print(cache.get(key: "one")) // Output: Optional(1)
print(cache.get(key: "two")) // Output: Optional(2)
sleep(6)
print(cache.get(key: "one")) // Output: nil
print(cache.get(key: "two")) // Output: Optional(2)
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: (value: Value, expiration: Date)]()
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache = [Key: (value: Value, expiration: Date)]()
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: CacheItem<Value>] = [:]
private let queue = DispatchQueue(label: "ExpirableCacheQueue")
struct CacheItem<Value> {
let value: Value
let expirationDate: Date
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let cacheItem = CacheItem(value: value, expirationDate: expirationDate)
queue.async {
self.cache[key] = cacheItem
}
}
func get(key: Key) -> Value? {
var result: Value?
queue.sync {
if let cacheItem = self.cache[key], Date() < cacheItem.expirationDate {
result = cacheItem.value
} else {
self.cache.removeValue(forKey: key)
}
}
return result
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: CacheItem<Value>] = [:]
private let queue = DispatchQueue(label: "ExpirableCacheQueue")
struct CacheItem<Value> {
let value: Value
let expirationDate: Date
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
let cacheItem = CacheItem(value: value, expirationDate: expirationDate)
queue.async {
self.cache[key] = cacheItem
}
}
func get(key: Key) -> Value? {
var result: Value?
queue.sync {
if let cacheItem = self.cache[key], Date() < cacheItem.expirationDate {
result = cacheItem.value
} else {
self.cache.removeValue(forKey: key)
}
}
return result
}
}
// Usage example
let cache = ExpirableCache<String, Int>()
cache.put(value: 1, key: "one", expiration: 10)
print(cache.get(key: "one")) // Output: Optional(1)
sleep(11)
print(cache.get(key: "one")) // Output: nil
```struct CacheItem<Value> { // generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in Swift 6Thread.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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}
```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<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.<|im_end|>
<|im_start|>assistant
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value: value, expiration: expirationDate)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], Date() < expiration else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache {
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let newValue = newValue {
put(value: newValue, key: key, expiration: 60 * 60) // 1 hour
} else {
cache.removeValue(forKey: key)
}
}
}
}
```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 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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var encryptedData = Data()
for (index, char) in string.enumerated() {
guard let charData = char.data(using: .utf8) else {
fatalError("Invalid character")
}
let keyByte = keyData[index % keyData.count]
let encryptedByte = charData[0] ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
let decryptedChar = String(data: [decryptedByte], encoding: .utf8) ?? ""
decryptedString.append(decryptedChar)
}
return decryptedString
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var encryptedData = Data()
for (index, char) in string.enumerated() {
guard let charData = char.data(using: .utf8) else {
fatalError("Invalid character")
}
let keyByte = keyData[index % keyData.count]
let encryptedByte = charData[0] ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
let decryptedChar = String(data: [decryptedByte], encoding: .utf8) ?? ""
decryptedString.append(decryptedChar)
}
return decryptedString
}
}
```guard let charData = char.data(using: .utf8) else { // cannot infer contextual base in reference to member 'utf8'guard let charData = char.data(using: .utf8) else { // value of type 'String.Element' (aka 'Character') has no member 'data'let decryptedChar = String(data: [decryptedByte], encoding: .utf8) ?? "" // cannot convert value of type '[UInt8]' to expected argument type 'Data'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 {
guard !key.isEmpty else { return Data() }
let keyData = key.data(using: .utf8)!
var encryptedData = Data()
for (index, char) in string.enumerated() {
let charData = char.data(using: .utf8)!
let xorData = Data(bytes: [charData.first! ^ keyData[index % keyData.count]], count: 1)
encryptedData.append(xorData)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard !key.isEmpty else { return "" }
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for (index, byte) in data.enumerated() {
let xorData = Data(bytes: [byte ^ keyData[index % keyData.count]], count: 1)
let char = String(data: xorData, encoding: .utf8)!
decryptedString.append(char)
}
return decryptedString
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard !key.isEmpty else { return Data() }
let keyData = key.data(using: .utf8)!
var encryptedData = Data()
for (index, char) in string.enumerated() {
let charData = char.data(using: .utf8)!
let xorData = Data(bytes: [charData.first! ^ keyData[index % keyData.count]], count: 1)
encryptedData.append(xorData)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard !key.isEmpty else { return "" }
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for (index, byte) in data.enumerated() {
let xorData = Data(bytes: [byte ^ keyData[index % keyData.count]], count: 1)
let char = String(data: xorData, encoding: .utf8)!
decryptedString.append(char)
}
return decryptedString
}
}
```
This code defines a protocol `EncryptorProtocol` with two methods: `encrypt` and `decrypt`. The `Encryptor` class implements this protocol and provides the actual implementation of these methods. The `encrypt` method applies the XOR operation between each character of the input string and the corresponding character of the key, and returns the resulting encrypted data. The `decrypt` method does the opposite, by applying the XOR operation to the encrypted data and the key.let charData = char.data(using: .utf8)! // value of type 'String.Element' (aka 'Character') has no member 'data'let charData = char.data(using: .utf8)! // cannot infer contextual base in reference to member 'utf8'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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var encryptedData = Data()
for (index, char) in string.enumerated() {
let charData = Data([char.asciiValue!])
let xorData = charData.xor(with: keyData[index % keyData.count])
encryptedData.append(xorData)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var decryptedString = ""
for (index, byte) in data.enumerated() {
let xorData = Data([byte])
let charData = xorData.xor(with: keyData[index % keyData.count])
let char = Character(UnicodeScalar(charData[0])!)
decryptedString.append(char)
}
return decryptedString
}
}
extension Data {
func xor(with data: Data) -> Data {
guard count == data.count else {
fatalError("Data lengths must be equal for XOR operation")
}
var xorData = Data()
for (index, byte) in enumerated() {
xorData.append(byte ^ data[index])
}
return xorData
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var encryptedData = Data()
for (index, char) in string.enumerated() {
let charData = Data([char.asciiValue!])
let xorData = charData.xor(with: keyData[index % keyData.count])
encryptedData.append(xorData)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
var decryptedString = ""
for (index, byte) in data.enumerated() {
let xorData = Data([byte])
let charData = xorData.xor(with: keyData[index % keyData.count])
let char = Character(UnicodeScalar(charData[0])!)
decryptedString.append(char)
}
return decryptedString
}
}
extension Data {
func xor(with data: Data) -> Data {
guard count == data.count else {
fatalError("Data lengths must be equal for XOR operation")
}
var xorData = Data()
for (index, byte) in enumerated() {
xorData.append(byte ^ data[index])
}
return xorData
}
}
```let xorData = charData.xor(with: keyData[index % keyData.count]) // no exact matches in call to subscriptlet charData = xorData.xor(with: keyData[index % keyData.count]) // no exact matches in call to subscriptprotocol 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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData[i] = xorByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
return String(data: encrypt(data, key), encoding: .utf8) ?? ""
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData[i] = xorByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
return String(data: encrypt(data, key), encoding: .utf8) ?? ""
}
}
```return String(data: encrypt(data, key), encoding: .utf8) ?? "" // cannot convert value of type 'Data' to expected argument type 'String'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 i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData.replaceBytes(in: NSRange(location: i, length: 1), withBytes: [xorByte])
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let xorByte = keyByte ^ dataByte
decryptedData.replaceBytes(in: NSRange(location: i, length: 1), withBytes: [xorByte])
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData.replaceBytes(in: NSRange(location: i, length: 1), withBytes: [xorByte])
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let xorByte = keyByte ^ dataByte
decryptedData.replaceBytes(in: NSRange(location: i, length: 1), withBytes: [xorByte])
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}
```encryptedData.replaceBytes(in: NSRange(location: i, length: 1), withBytes: [xorByte]) // value of type 'Data' has no member 'replaceBytes'decryptedData.replaceBytes(in: NSRange(location: i, length: 1), withBytes: [xorByte]) // value of type 'Data' has no member 'replaceBytes'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 {
guard let keyData = key.data(using: .utf8) else { return Data() }
guard let stringData = string.data(using: .utf8) else { return Data() }
var encryptedData = Data()
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 {
guard let keyData = key.data(using: .utf8) else { return "" }
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
let decryptedCharacter = Character(UnicodeScalar(decryptedByte)!)
decryptedString.append(decryptedCharacter)
}
return decryptedString
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard let keyData = key.data(using: .utf8) else { return Data() }
guard let stringData = string.data(using: .utf8) else { return Data() }
var encryptedData = Data()
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 {
guard let keyData = key.data(using: .utf8) else { return "" }
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
let decryptedCharacter = Character(UnicodeScalar(decryptedByte)!)
decryptedString.append(decryptedCharacter)
}
return decryptedString
}
}
```let decryptedCharacter = Character(UnicodeScalar(decryptedByte)!) // 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 i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let encryptedByte = stringByte ^ keyByte
encryptedData[i] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let decryptedByte = dataByte ^ keyByte
decryptedData[i] = decryptedByte
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let encryptedByte = stringByte ^ keyByte
encryptedData[i] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let decryptedByte = dataByte ^ keyByte
decryptedData[i] = decryptedByte
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}
```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 {
guard !key.isEmpty else { return 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 {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData[i] = xorByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard !key.isEmpty else { return "" }
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let xorByte = keyByte ^ dataByte
decryptedData[i] = xorByte
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard !key.isEmpty else { return 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 {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData[i] = xorByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard !key.isEmpty else { return "" }
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let xorByte = keyByte ^ dataByte
decryptedData[i] = xorByte
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}
```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 {
guard !string.isEmpty, !key.isEmpty else { return Data() }
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data()
for i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData.append(xorByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard !data.isEmpty, !key.isEmpty else { return "" }
let keyData = key.data(using: .utf8)!
var decryptedData = Data()
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let xorByte = keyByte ^ dataByte
decryptedData.append(xorByte)
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard !string.isEmpty, !key.isEmpty else { return Data() }
let keyData = key.data(using: .utf8)!
let stringData = string.data(using: .utf8)!
var encryptedData = Data()
for i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorByte = keyByte ^ stringByte
encryptedData.append(xorByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
guard !data.isEmpty, !key.isEmpty else { return "" }
let keyData = key.data(using: .utf8)!
var decryptedData = Data()
for i in 0..<data.count {
let keyByte = keyData[i % keyData.count]
let dataByte = data[i]
let xorByte = keyByte ^ dataByte
decryptedData.append(xorByte)
}
return String(data: decryptedData, encoding: .utf8) ?? ""
}
}
```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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorResult = keyByte ^ stringByte
encryptedData.append(xorResult)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let encryptedString = String(data: data, encoding: .utf8)!
return encrypt(encryptedString, key).stringValue
}
}
extension Data {
var stringValue: String {
return String(data: self, encoding: .utf8) ?? ""
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.<|im_end|>
<|im_start|>assistant
```swift
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 {
guard let keyData = key.data(using: .utf8) else {
fatalError("Invalid key")
}
let stringData = string.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for i in 0..<stringData.count {
let keyByte = keyData[i % keyData.count]
let stringByte = stringData[i]
let xorResult = keyByte ^ stringByte
encryptedData.append(xorResult)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let encryptedString = String(data: data, encoding: .utf8)!
return encrypt(encryptedString, key).stringValue
}
}
extension Data {
var stringValue: String {
return String(data: self, encoding: .utf8) ?? ""
}
}
``` // XCTAssertEqual failed: (Hello, SwiftEval!) is not equal to ( passphrasepassphrYwzo~7!Bl~wfSupw )protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime, Date().timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime, Date().timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime, Date().timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
if let lastRequestTime = lastRequestTime, Date().timeIntervalSince(lastRequestTime) >= timeInterval {
self.lastRequestTime = Date()
return true
}
if lastRequestTime == nil {
self.lastRequestTime = Date()
return true
}
return false
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime, Date().timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
if let lastRequestTime = lastRequestTime, Date().timeIntervalSince(lastRequestTime) >= timeInterval {
self.lastRequestTime = Date()
return true
}
if lastRequestTime == nil {
self.lastRequestTime = Date()
return true
}
return false
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
self.lastRequestTime = Date()
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
let requestsSinceLastInterval = Int(timeSinceLastRequest / timeInterval)
if requestsSinceLastInterval >= maxRequests {
return false
}
self.lastRequestTime = Date()
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
self._value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
self._value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "ThreadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "ThreadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounter", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let queue = DispatchQueue(label: "com.example.threadSafeCounterQueue", attributes: .concurrent)
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
queue.async(flags: .barrier) {
self._value += 1
}
}
func currentValue() -> Int {
var value: Int
queue.sync {
value = self._value
}
return value
}
}
```queue.sync { // variable 'value' captured by a closure before being initializedreturn value // variable 'value' used before being initializedprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let lock = NSLock()
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
_value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return _value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.<|im_end|>
<|im_start|>assistant
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private let lock = NSLock()
private var _value: Int
required init(value: Int) {
_value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
_value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return _value
}
}
```protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
// Example usage
let pipeline = Pipeline(value: 0)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.execute()
print(pipeline) // Output: -3
```
In this code, we define a `PipelineProtocol` that defines the requirements for a pipeline builder. The `Pipeline` class implements this protocol and provides the implementation for the `pipe` and `execute` methods. The `pipe` method allows chaining transformations by creating a new `Pipeline` instance with the transformed value, and the `execute` method returns the final value after applying all transformations.init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
// Usage
let pipeline = Pipeline(value: 1)
.pipe { $0 * 2 }
.pipe { $0 + 3 }
.pipe { String($0) }
.execute()
print(pipeline) // Output: "7"
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
// Usage
let pipeline = Pipeline(value: 0)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.execute()
print(pipeline) // Output: -3
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
// Example usage
let pipeline = Pipeline(value: 0)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.execute()
print(pipeline) // Output: -3
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
let pipeline = Pipeline(value: 0)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.execute()
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
// Example usage
let pipeline = Pipeline(value: 1)
.pipe { $0 * 2 }
.pipe { $0 + 3 }
.pipe { String($0) }
.execute()
print(pipeline) // Output: "7"
```
In this code, we define a `PipelineProtocol` that defines the requirements for a pipeline builder class. The `Pipeline` class implements this protocol and provides the implementation for the `pipe` and `execute` methods. The `pipe` method allows chaining transformations and type changes, and the `execute` method produces the final output by sequentially applying the transformations.init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
// Usage
let pipeline = Pipeline(value: 0)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.execute()
print(pipeline) // Outputs: -3
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
let pipeline = Pipeline(value: 0)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { $0 - 3 }
.execute()
print(pipeline) // Output: -3
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
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.<|im_end|>
<|im_start|>assistant
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
let value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(value)) // cannot convert value of type 'U' to expected argument type 'T'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: [UUID: (Value) -> Void] = [:]
private var _value: Value
init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var _value: Value
init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<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 {
var value: Value
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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 {
var value: Value
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
_value = value
}
var value: Value {
get { return _value }
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(_value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
_value = value
}
var value: Value {
get { return _value }
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(_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 {
var value: Value {
didSet {
notifyObservers(newValue)
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers(_ newValue: Value) {
for observer in observers.values {
observer(newValue)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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 {
var value: Value {
didSet {
notifyObservers(newValue)
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers(_ newValue: Value) {
for observer in observers.values {
observer(newValue)
}
}
}
```notifyObservers(newValue) // cannot find 'newValue' in scopeinit(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<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 {
var value: Value {
didSet {
notifyObservers()
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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 {
var value: Value {
didSet {
notifyObservers()
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get { return _value }
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get { return _value }
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(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: [UUID: (Value) -> Void] = [:]
private var currentValue: Value
required init(value: Value) {
self.currentValue = value
}
var value: Value {
get {
return currentValue
}
set {
currentValue = newValue
notifyObservers(newValue)
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers(_ newValue: Value) {
for observer in observers.values {
observer(newValue)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var currentValue: Value
required init(value: Value) {
self.currentValue = value
}
var value: Value {
get {
return currentValue
}
set {
currentValue = newValue
notifyObservers(newValue)
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers(_ newValue: Value) {
for observer in observers.values {
observer(newValue)
}
}
}
```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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(value)
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.<|im_end|>
<|im_start|>assistant
```swift
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: [UUID: (Value) -> Void] = [:]
private var _value: Value
required init(value: Value) {
self._value = value
}
var value: Value {
get {
return _value
}
set {
_value = newValue
notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for observer in observers.values {
observer(value)
}
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
struct Test {
@Clamped(0...10)
var value: Int
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
struct Test {
@Clamped(0...10)
var value: Int
}
var test = Test()
test.value = 15 // value will be clamped to 10
print(test.value) // Output: 10
```@Clamped(0...10) // missing argument for parameter 'wrappedValue' in callprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.<|im_end|>
<|im_start|>assistant
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
```subscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopesubscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<Value> {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<Value, W>) -> W {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(wrappedValue: 0, logger: { event, value in
print("User property accessed: \(event), value: \(value)")
})
var age: Int
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<Value> {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<Value, W>) -> W {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(wrappedValue: 0, logger: { event, value in
print("User property accessed: \(event), value: \(value)")
})
var age: Int
}
var user = User()
print(user.age) // Output: User property accessed: get, value: 0
user.age = 30
// Output: User property accessed: set, value: 30
```subscript(keyPath: WritableKeyPath<Value, W>) -> W { // cannot find type 'W' in scopesubscript(keyPath: WritableKeyPath<Value, W>) -> W { // cannot find type 'W' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(logger: { (event, value) in
print("User property was \(event) with value \(value)")
})
var name: String = "John"
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(logger: { (event, value) in
print("User property was \(event) with value \(value)")
})
var name: String = "John"
}
let user = User()
print(user.name) // Output: User property was get with value John
user.name = "Jane" // Output: User property was set with value Jane
```subscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopesubscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set {
self = newValue
}
}
subscript(keyPath: WritableKeyPath<Value, W>) -> W {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set {
self = newValue
}
}
subscript(keyPath: WritableKeyPath<Value, W>) -> W {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
```subscript(keyPath: WritableKeyPath<Value, W>) -> W { // cannot find type 'W' in scopesubscript(keyPath: WritableKeyPath<Value, W>) -> W { // cannot find type 'W' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
```subscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopesubscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
return self
}
func get() -> T {
logger(.get, wrappedValue)
return wrappedValue
}
func set(_ newValue: T) {
logger(.set, newValue)
wrappedValue = newValue
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
return self
}
func get() -> T {
logger(.get, wrappedValue)
return wrappedValue
}
func set(_ newValue: T) {
logger(.set, newValue)
wrappedValue = newValue
}
}
```wrappedValue = newValue // cannot assign to property: 'self' is immutableenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(logger: { (event, value) in
print("User property was accessed with value: \(value)")
})
var name: String = ""
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
```
You can use this property wrapper like this:
```swift
struct User {
@Logged(logger: { (event, value) in
print("User property was accessed with value: \(value)")
})
var name: String = ""
}
var user = User()
user.name = "John"
print(user.name)
```
This will output:
```
User property was accessed with value: John
User property was accessed with value: John
```subscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopesubscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(wrappedValue: 0, logger: { event, value in
print("User property accessed: \(event), value: \(value)")
})
var age: Int
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set { self = newValue }
}
subscript(keyPath: WritableKeyPath<T, U>) -> U {
get {
logger(.get, wrappedValue)
return wrappedValue[keyPath: keyPath]
}
set {
logger(.set, newValue)
wrappedValue[keyPath: keyPath] = newValue
}
}
}
struct User {
@Logged(wrappedValue: 0, logger: { event, value in
print("User property accessed: \(event), value: \(value)")
})
var age: Int
}
let user = User()
print(user.age) // Output: User property accessed: get, value: 0
user.age = 30
// Output: User property accessed: set, value: 30
```subscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopesubscript(keyPath: WritableKeyPath<T, U>) -> U { // cannot find type 'U' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set {
logger(.set, newValue.wrappedValue)
self = newValue
}
}
}
struct User {
@Logged(wrappedValue: "John Doe", logger: { event, value in
print("User property was accessed with value: \(value)")
})
var name: String
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Self {
get { self }
set {
logger(.set, newValue.wrappedValue)
self = newValue
}
}
}
struct User {
@Logged(wrappedValue: "John Doe", logger: { event, value in
print("User property was accessed with value: \(value)")
})
var name: String
}
let user = User()
print(user.name) // User property was accessed with value: John Doe
user.name = "Jane Doe" // User property was accessed with value: Jane Doe
``` // XCTAssertEqual failed: ([]) is not equal to (["Accessing value: 0"])enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
private var value: Value
private let logger: (Event, Value) -> Void
var wrappedValue: Value {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.value = wrappedValue
self.logger = logger
}
}
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myProperty: Int
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.<|im_end|>
<|im_start|>assistant
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
private var value: Value
private let logger: (Event, Value) -> Void
var wrappedValue: Value {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.value = wrappedValue
self.logger = logger
}
}
class MyClass {
@Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
var myProperty: Int
}
let myObject = MyClass()
myObject.myProperty = 10
print(myObject.myProperty)
```
This code defines a `Logged` property wrapper that logs access and modification of the wrapped property. The `Logged` property wrapper conforms to the `LoggedProtocol`, which requires an initializer that takes a `wrappedValue` and a `logger` function. The `wrappedValue` is the property that is being logged, and the `logger` function is called when the property is accessed or modified. The `Logged` property wrapper has a `get` and `set` accessor that logs the event and value before returning the value or setting the new value. The `MyClass` uses the `Logged` property wrapper to log access and modification of the `myProperty`.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
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Update search bar results
// ...
return nil
case .keyboardDeleteBackwards:
// Handle delete backwards
// Update search bar results
// ...
return nil
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check forecast
do {
let forecast = try provider.forecast(for: "CityName")
return .success(city: "CityName", forecast: forecast)
} catch {
return .failure(city: "CityName")
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Update search bar results
// ...
return nil
case .keyboardDeleteBackwards:
// Handle delete backwards
// Update search bar results
// ...
return nil
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check forecast
do {
let forecast = try provider.forecast(for: "CityName")
return .success(city: "CityName", forecast: forecast)
} catch {
return .failure(city: "CityName")
}
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (Optional(Solution.ApplicationFeedback.failure(city: "CityName"))) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (nil) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Update search bar results
// Notify view to update
break
case .keyboardDeleteBackwards:
// Handle delete backwards
// Update search bar results
// Notify view to update
break
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check if city is valid
// Use provider to get forecast
// Notify view to update
break
}
return nil
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Update search bar results
// Notify view to update
break
case .keyboardDeleteBackwards:
// Handle delete backwards
// Update search bar results
// Notify view to update
break
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check if city is valid
// Use provider to get forecast
// Notify view to update
break
}
return nil
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (nil) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Add character to search bar
// This could be a string builder or a mutable array
// For simplicity, let's assume it's a string
searchBar += String(character)
case .keyboardDeleteBackwards:
// Remove last character from search bar
searchBar.removeLast()
case .searchButtonPress:
guard !searchBar.isEmpty else { return nil }
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
return nil
}
private var searchBar = ""
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Add character to search bar
// This could be a string builder or a mutable array
// For simplicity, let's assume it's a string
searchBar += String(character)
case .keyboardDeleteBackwards:
// Remove last character from search bar
searchBar.removeLast()
case .searchButtonPress:
guard !searchBar.isEmpty else { return nil }
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
return nil
}
private var searchBar = ""
}
```
This is a simplified version of a weather application. It includes a `WeatherProvider` protocol that defines a method for fetching weather forecast for a given city. The `UserAction` enum represents possible user interactions, such as selecting a character from the keyboard, deleting a character, or pressing the search button. The `ApplicationFeedback` enum represents the possible outcomes of handling a user action, either a success or a failure.
The `WeatherApplication` class implements the `WeatherApplicationProtocol` and provides a method for handling user actions. It maintains a private `searchBar` property to keep track of the user's input. When the `searchButtonPress` action is triggered, it checks if the search bar is not empty and then attempts to fetch the weather forecast using the `WeatherProvider`. If successful, it returns a `success` feedback with the city and forecast; otherwise, it returns a `failure` feedback with the city.
Note that this is a very simplified version of a weather application and does not include any UI or networking code.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
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (nil) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Update search bar results
break
case .keyboardDeleteBackwards:
// Handle delete backwards
// Update search bar results
break
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check forecast
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
}
return nil
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Update search bar results
break
case .keyboardDeleteBackwards:
// Handle delete backwards
// Update search bar results
break
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check forecast
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
}
return nil
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (Optional(Solution.ApplicationFeedback.failure(city: "New York"))) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (nil) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (nil) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required 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 backwards
return nil
case .searchButtonPress:
// Handle search button press
return nil
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (nil) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))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
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Append character to search bar
// Update search bar results
// No feedback needed
return nil
case .keyboardDeleteBackwards:
// Handle delete backwards
// Remove last character from search bar
// Update search bar results
// No feedback needed
return nil
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check if city is valid
// If valid, get forecast
// If not, show error message
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
}
}
}<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.<|im_end|>
<|im_start|>assistant
```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
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
// Handle character selection
// Append character to search bar
// Update search bar results
// No feedback needed
return nil
case .keyboardDeleteBackwards:
// Handle delete backwards
// Remove last character from search bar
// Update search bar results
// No feedback needed
return nil
case .searchButtonPress:
// Handle search button press
// Get city from search bar
// Check if city is valid
// If valid, get forecast
// If not, show error message
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
}
}
}
```case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing it // XCTAssertEqual failed: (Optional(Solution.ApplicationFeedback.failure(city: "New York"))) is not equal to (Optional(Solution.ApplicationFeedback.success(city: "Kyiv", forecast: "+28")))