Metadata
| Key | Value |
|---|---|
| engine | transformers |
| prompt | instruct |
| 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 {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: []) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch let error {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch let error {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: []) as? JSON { // no exact matches in call to class method 'jsonObject'typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
do {
if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON {
return json
}
throw ParsingError.invalidInput
} catch {
throw ParsingError.internalError(error)
}
}
```if let json = try JSONSerialization.jsonObject(with: string, options: .mutableContainers) as? JSON { // no exact matches in call to class method 'jsonObject'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, attributes, children):
let attributeString = attributes.map { " \($0)=\$1" }.joined()
return "<\(name)\(attributeString)>\n\(children.map { generate($0) }.joined())</\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeString = attributes.map { " \($0)=\$1" }.joined()
return "<\(name)\(attributeString)>\n\(children.map { generate($0) }.joined())</\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'children' in scopecase .element(let name, attributes, children): // cannot find 'attributes' in scopelet attributeString = attributes.map { " \($0)=\$1" }.joined() // invalid escape sequence in literallet attributeString = attributes.map { " \($0)=\$1" }.joined() // cannot find 'attributes' in scopereturn "<\(name)\(attributeString)>\n\(children.map { generate($0) }.joined())</\(name)>" // cannot find 'children' in scopeindirect 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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())><\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())><\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"], [])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopelet attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " } // cannot find 'attributes' in scopeindirect 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, attributes, children):
let attributeString = attributes.map { " \($0)=\"\($1)\"" }.joined()
return "<\(name)\(attributeString)>\(children.map { generate($0) }.joined())</\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeString = attributes.map { " \($0)=\"\($1)\"" }.joined()
return "<\(name)\(attributeString)>\(children.map { generate($0) }.joined())</\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"], [])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopelet attributeString = attributes.map { " \($0)=\"\($1)\"" }.joined() // cannot find 'attributes' in scopereturn "<\(name)\(attributeString)>\(children.map { generate($0) }.joined())</\(name)>" // cannot find 'children' in scopeindirect 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, attributes, children):
var element = "<" + name
for (key, value) in attributes {
element += " \(key)=\"\(value)\""
}
element += ">"
for child in children {
element += generate(child)
}
return element + "</" + name + ">"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
var element = "<" + name
for (key, value) in attributes {
element += " \(key)=\"\(value)\""
}
element += ">"
for child in children {
element += generate(child)
}
return element + "</" + name + ">"
}
}
let tree = HTMLNode.element("div", ["href" : "swifteval"])
let html = generate(tree)
print(html)
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopefor (key, value) in attributes { // cannot find 'attributes' in scopefor child in children { // cannot find 'children' in scopeindirect 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, attributes, children):
var element = "<" + name
for (key, value) in attributes {
element += " \(key)=\"\(value)\""
}
element += ">"
for child in children {
element += generate(child)
}
return element + "</" + name + ">"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
var element = "<" + name
for (key, value) in attributes {
element += " \(key)=\"\(value)\""
}
element += ">"
for child in children {
element += generate(child)
}
return element + "</" + name + ">"
}
}
let tree = HTMLNode.element("div", ["href": "swifteval"])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopefor (key, value) in attributes { // cannot find 'attributes' in scopefor child in children { // cannot find 'children' in scopeindirect 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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"], [])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopelet attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " } // cannot find 'attributes' in scopereturn "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>" // cannot find 'children' in scopeindirect 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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"], [])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopelet attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " } // cannot find 'attributes' in scopereturn "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>" // cannot find 'children' in scopeindirect 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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " }
return "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"], [])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopelet attributeStrings = attributes.map { " \($0.key)=\"\($0.value)\" " } // cannot find 'attributes' in scopereturn "<\(name)\(attributeStrings.joined())>" + children.map { generate($0) }.joined(separator: "") + "</\(name)>" // cannot find 'children' in scopeindirect 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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)” " }
return "<\(name)\(attributeStrings.joined())><\(name)>"
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
let attributeStrings = attributes.map { " \($0.key)=\"\($0.value)” " }
return "<\(name)\(attributeStrings.joined())><\(name)>"
}
}
let tree = HTMLNode.element("div", ["id" : "myDiv"], [
HTMLNode.element("a", ["href" : "swifteval"])
])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopelet attributeStrings = attributes.map { " \($0.key)=\"\($0.value)” " } // cannot find 'attributes' in scopeindirect 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, attributes, children):
var element = "<" + name
for (key, value) in attributes {
element += " \(key)=\"\(value)\""
}
element += ">"
for child in children {
element += generate(child)
}
element += "</\(name)>"
return element
}
}### Instruction:
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>"
### Response:
```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, attributes, children):
var element = "<" + name
for (key, value) in attributes {
element += " \(key)=\"\(value)\""
}
element += ">"
for child in children {
element += generate(child)
}
element += "</\(name)>"
return element
}
}
let tree = HTMLNode.element("div", ["href" : "swifteval"], [])
print(generate(tree))
```case .element(let name, attributes, children): // cannot find 'attributes' in scopecase .element(let name, attributes, children): // cannot find 'children' in scopefor (key, value) in attributes { // cannot find 'attributes' in scopefor child in children { // cannot find 'children' in scopeenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
var lastOperator = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
if let number = Double(String(char)) {
stack.append(number)
} else if char == "+" || char == "-" || char == "*" || char == "/" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
lastOperator = String(char)
stack.append(Double(lastOperator == "-" ? "-1" : "1"))
index += 1
} else if char == "(" {
stack.append(0)
index += 1
} else if char == ")" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
var result = 0.0
while stack.last != 0 {
if let number = stack.removeLast() {
if let operator = stack.removeLast() {
switch lastOperator {
case "+":
result += number + operator
case "-":
result -= number + operator
case "*":
result *= number * operator
case "/":
if operator != 0 {
result /= number
} else {
throw CalculateError.invalidInput
}
default:
break
}
}
}
}
stack.removeLast()
if stack.count < 2 {
throw CalculateError.invalidInput
}
stack.append(result)
index += 1
} else {
throw CalculateError.invalidInput
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()!
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
var lastOperator = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
if let number = Double(String(char)) {
stack.append(number)
} else if char == "+" || char == "-" || char == "*" || char == "/" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
lastOperator = String(char)
stack.append(Double(lastOperator == "-" ? "-1" : "1"))
index += 1
} else if char == "(" {
stack.append(0)
index += 1
} else if char == ")" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
var result = 0.0
while stack.last != 0 {
if let number = stack.removeLast() {
if let operator = stack.removeLast() {
switch lastOperator {
case "+":
result += number + operator
case "-":
result -= number + operator
case "*":
result *= number * operator
case "/":
if operator != 0 {
result /= number
} else {
throw CalculateError.invalidInput
}
default:
break
}
}
}
}
stack.removeLast()
if stack.count < 2 {
throw CalculateError.invalidInput
}
stack.append(result)
index += 1
} else {
throw CalculateError.invalidInput
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()!
}
```stack.append(Double(lastOperator == "-" ? "-1" : "1")) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'if let number = stack.removeLast() { // initializer for conditional binding must have Optional type, not 'Double'if let operator = stack.removeLast() { // unwrap condition requires a valid identifierif let operator = stack.removeLast() { // expected '{' after 'if' conditionif let operator = stack.removeLast() { // expected patternresult += number + operator // expected expression after operatorresult += number + operator // expected operator name in operator declarationresult -= number + operator // expected expression after operatorresult -= number + operator // expected operator name in operator declarationresult *= number * operator // expected expression after operatorresult *= number * operator // expected operator name in operator declarationif operator != 0 { // expected expression, var, or let in 'if' conditionif operator != 0 { // operator must be declared as 'prefix', 'postfix', or 'infix'if operator != 0 { // 'operator' may only be declared at file scopereturn stack.removeLast()! // cannot force unwrap value of non-optional type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let character = string[string.index(string.startIndex, offsetBy: index)]
switch character {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * 0)
index += 1
case "*":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
index += 1
case "/":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
index += 1
case "(":
var substring = string
var subIndex = index
var subCount = 0
while subIndex < substring.count {
let subCharacter = substring[substring.index(substring.startIndex, offsetBy: subIndex)]
if subCharacter == "(" {
subCount += 1
} else if subCharacter == ")" {
subCount -= 1
if subCount == 0 {
break
}
}
subIndex += 1
}
if subIndex == string.count {
throw CalculateError.invalidInput
}
let subString = string[string.index(string.startIndex, offsetBy: index)..<string.index(string.startIndex, offsetBy: subIndex)]
let subResult = calculate(subString)
stack.append(subResult)
index = subIndex
default:
var num = ""
while index < string.count && string[string.index(string.startIndex, offsetBy: index)].isNumber {
num += String(string[string.index(string.startIndex, offsetBy: index)])
index += 1
}
stack.append(Double(num)!)
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let character = string[string.index(string.startIndex, offsetBy: index)]
switch character {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * 0)
index += 1
case "*":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
index += 1
case "/":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
index += 1
case "(":
var substring = string
var subIndex = index
var subCount = 0
while subIndex < substring.count {
let subCharacter = substring[substring.index(substring.startIndex, offsetBy: subIndex)]
if subCharacter == "(" {
subCount += 1
} else if subCharacter == ")" {
subCount -= 1
if subCount == 0 {
break
}
}
subIndex += 1
}
if subIndex == string.count {
throw CalculateError.invalidInput
}
let subString = string[string.index(string.startIndex, offsetBy: index)..<string.index(string.startIndex, offsetBy: subIndex)]
let subResult = calculate(subString)
stack.append(subResult)
index = subIndex
default:
var num = ""
while index < string.count && string[string.index(string.startIndex, offsetBy: index)].isNumber {
num += String(string[string.index(string.startIndex, offsetBy: index)])
index += 1
}
stack.append(Double(num)!)
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
do {
let result = calculate("2+2*2")
print(result)
} catch CalculateError.invalidInput {
print("Invalid input")
} catch {
print("Unknown error")
}
```let subResult = calculate(subString) // cannot convert value of type 'Substring' to expected argument type 'String'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let character = string[string.index(string.startIndex, offsetBy: index)]
switch character {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * stack.removeLast())
index += 1
case "*":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
index += 1
case "/":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
index += 1
case "(":
var substring = String(string[string.index(string.startIndex, offsetBy: index)..<string.endIndex])
var subIndex = 0
while true {
let subCharacter = substring[substring.startIndex, offsetBy: subIndex]
if subCharacter == ")" {
break
}
if subCharacter == "+" || subCharacter == "-" || subCharacter == "*" || subCharacter == "/" {
stack.append(Double(String(substring[substring.startIndex, offsetBy: subIndex]))!)
substring = String(substring[substring.index(substring.startIndex, offsetBy: subIndex + 1)..<substring.endIndex])
subIndex = 0
switch subCharacter {
case "+":
stack.append(0)
case "-":
stack.append(-1 * stack.removeLast())
case "*":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
case "/":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
default:
break
}
}
subIndex += 1
}
index += substring.count
default:
if let number = Double(String(character)) {
stack.append(number)
index += 1
} else {
throw CalculateError.invalidInput
}
}
}
return stack.removeLast()
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let character = string[string.index(string.startIndex, offsetBy: index)]
switch character {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * stack.removeLast())
index += 1
case "*":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
index += 1
case "/":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
index += 1
case "(":
var substring = String(string[string.index(string.startIndex, offsetBy: index)..<string.endIndex])
var subIndex = 0
while true {
let subCharacter = substring[substring.startIndex, offsetBy: subIndex]
if subCharacter == ")" {
break
}
if subCharacter == "+" || subCharacter == "-" || subCharacter == "*" || subCharacter == "/" {
stack.append(Double(String(substring[substring.startIndex, offsetBy: subIndex]))!)
substring = String(substring[substring.index(substring.startIndex, offsetBy: subIndex + 1)..<substring.endIndex])
subIndex = 0
switch subCharacter {
case "+":
stack.append(0)
case "-":
stack.append(-1 * stack.removeLast())
case "*":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
case "/":
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
default:
break
}
}
subIndex += 1
}
index += substring.count
default:
if let number = Double(String(character)) {
stack.append(number)
index += 1
} else {
throw CalculateError.invalidInput
}
}
}
return stack.removeLast()
}
```let subCharacter = substring[substring.startIndex, offsetBy: subIndex] // extra argument 'offsetBy' in subscriptstack.append(Double(String(substring[substring.startIndex, offsetBy: subIndex]))!) // extra argument 'offsetBy' in subscriptenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
var currentNumber = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "0"..."9":
currentNumber += String(char)
case "+", "-", "*", "/":
if !currentNumber.isEmpty {
stack.append(Double(currentNumber)!)
currentNumber = ""
}
stack.append(Double(String(char)))
case "(":
stack.append(0)
index += 1
case ")":
var sum = 0.0
while true {
let top = stack.removeLast()
if top == 0 {
if stack.isEmpty {
throw CalculateError.invalidInput
}
break
}
sum += top
}
stack.append(sum)
index += 1
default:
throw CalculateError.invalidInput
}
}
if !currentNumber.isEmpty {
throw CalculateError.invalidInput
}
var result = 0.0
while !stack.isEmpty {
let top = stack.removeLast()
if stack.isEmpty {
result += top
} else {
let second = stack.removeLast()
let operation = stack.removeLast()
switch operation {
case "+":
result = second + top
case "-":
result = second - top
case "*":
result = second * top
case "/":
if top == 0 {
throw CalculateError.invalidInput
}
result = second / top
default:
throw CalculateError.invalidInput
}
}
}
return result
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
var currentNumber = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "0"..."9":
currentNumber += String(char)
case "+", "-", "*", "/":
if !currentNumber.isEmpty {
stack.append(Double(currentNumber)!)
currentNumber = ""
}
stack.append(Double(String(char)))
case "(":
stack.append(0)
index += 1
case ")":
var sum = 0.0
while true {
let top = stack.removeLast()
if top == 0 {
if stack.isEmpty {
throw CalculateError.invalidInput
}
break
}
sum += top
}
stack.append(sum)
index += 1
default:
throw CalculateError.invalidInput
}
}
if !currentNumber.isEmpty {
throw CalculateError.invalidInput
}
var result = 0.0
while !stack.isEmpty {
let top = stack.removeLast()
if stack.isEmpty {
result += top
} else {
let second = stack.removeLast()
let operation = stack.removeLast()
switch operation {
case "+":
result = second + top
case "-":
result = second - top
case "*":
result = second * top
case "/":
if top == 0 {
throw CalculateError.invalidInput
}
result = second / top
default:
throw CalculateError.invalidInput
}
}
}
return result
}
```stack.append(Double(String(char))) // value of optional type 'Double?' must be unwrapped to a value 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'case "/": // expression pattern of type 'String' cannot match values of type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * 0)
index += 1
case "*":
let a = stack.removeLast()
stack.append(stack.removeLast() * a)
index += 1
case "/":
let a = stack.removeLast()
stack.append(stack.removeLast() / a)
index += 1
case "(":
var sum = 0.0
var multiplier = 1.0
var inside = false
var insideIndex = index
while insideIndex < string.count {
let insideChar = string[string.index(string.startIndex, offsetBy: insideIndex)]
switch insideChar {
case "+":
inside = true
insideIndex += 1
break
case "-":
inside = true
insideIndex += 1
break
case ")":
inside = false
insideIndex += 1
break
default:
if inside {
sum += multiplier * Double(String(insideChar))!
multiplier = 1.0
} else {
stack.append(Double(String(insideChar)))!
}
insideIndex += 1
break
}
}
stack.append(sum)
index = insideIndex
default:
if let num = Double(String(char)) {
stack.append(num)
index += 1
} else {
throw CalculateError.invalidInput
}
}
}
return stack.reduce(0.0, +)
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * 0)
index += 1
case "*":
let a = stack.removeLast()
stack.append(stack.removeLast() * a)
index += 1
case "/":
let a = stack.removeLast()
stack.append(stack.removeLast() / a)
index += 1
case "(":
var sum = 0.0
var multiplier = 1.0
var inside = false
var insideIndex = index
while insideIndex < string.count {
let insideChar = string[string.index(string.startIndex, offsetBy: insideIndex)]
switch insideChar {
case "+":
inside = true
insideIndex += 1
break
case "-":
inside = true
insideIndex += 1
break
case ")":
inside = false
insideIndex += 1
break
default:
if inside {
sum += multiplier * Double(String(insideChar))!
multiplier = 1.0
} else {
stack.append(Double(String(insideChar)))!
}
insideIndex += 1
break
}
}
stack.append(sum)
index = insideIndex
default:
if let num = Double(String(char)) {
stack.append(num)
index += 1
} else {
throw CalculateError.invalidInput
}
}
}
return stack.reduce(0.0, +)
}
```stack.append(Double(String(insideChar)))! // cannot force unwrap value of non-optional type '()'stack.append(Double(String(insideChar)))! // value of optional type 'Double?' must be unwrapped to a value of type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
var lastOperator = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
if let number = Double(String(char)) {
stack.append(number)
} else if char == "+" || char == "-" || char == "*" || char == "/" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
lastOperator = String(char)
stack.append(Double(lastOperator == "-" ? "-1" : "1"))
index += 1
} else if char == "(" {
stack.append(0)
index += 1
} else if char == ")" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
var temp = 0.0
while stack.last != 0.0 {
temp += stack.removeLast()
}
stack.removeLast()
if lastOperator == "*" {
temp *= stack.removeLast()
} else if lastOperator == "/" {
if stack.removeLast() == 0 {
throw CalculateError.invalidInput
}
temp /= stack.removeLast()
}
stack.append(temp)
index += 1
} else {
throw CalculateError.invalidInput
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
var lastOperator = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
if let number = Double(String(char)) {
stack.append(number)
} else if char == "+" || char == "-" || char == "*" || char == "/" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
lastOperator = String(char)
stack.append(Double(lastOperator == "-" ? "-1" : "1"))
index += 1
} else if char == "(" {
stack.append(0)
index += 1
} else if char == ")" {
if stack.count < 2 {
throw CalculateError.invalidInput
}
var temp = 0.0
while stack.last != 0.0 {
temp += stack.removeLast()
}
stack.removeLast()
if lastOperator == "*" {
temp *= stack.removeLast()
} else if lastOperator == "/" {
if stack.removeLast() == 0 {
throw CalculateError.invalidInput
}
temp /= stack.removeLast()
}
stack.append(temp)
index += 1
} else {
throw CalculateError.invalidInput
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
```stack.append(Double(lastOperator == "-" ? "-1" : "1")) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * 0)
index += 1
case "*":
let a = stack.removeLast()
stack.append(a * stack.removeLast())
index += 1
case "/":
let a = stack.removeLast()
stack.append(a / stack.removeLast())
index += 1
case "(":
var temp = 0
var tempIndex = index
while string[string.index(string.startIndex, offsetBy: tempIndex)] != ")" {
if let digit = Int(String(string[string.index(string.startIndex, offsetBy: tempIndex)])) {
temp = temp * 10 + digit
} else {
throw CalculateError.invalidInput
}
tempIndex += 1
}
stack.append(Double(temp))
index = tempIndex + 1
default:
if let digit = Int(String(char)) {
var temp = String(char)
while let nextChar = string[string.index(string.startIndex, offsetBy: index + 1)] as? Int {
temp.append(String(nextChar))
index += 1
}
stack.append(Double(temp))
} else {
throw CalculateError.invalidInput
}
}
}
return stack.reduce(0, +)
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1 * 0)
index += 1
case "*":
let a = stack.removeLast()
stack.append(a * stack.removeLast())
index += 1
case "/":
let a = stack.removeLast()
stack.append(a / stack.removeLast())
index += 1
case "(":
var temp = 0
var tempIndex = index
while string[string.index(string.startIndex, offsetBy: tempIndex)] != ")" {
if let digit = Int(String(string[string.index(string.startIndex, offsetBy: tempIndex)])) {
temp = temp * 10 + digit
} else {
throw CalculateError.invalidInput
}
tempIndex += 1
}
stack.append(Double(temp))
index = tempIndex + 1
default:
if let digit = Int(String(char)) {
var temp = String(char)
while let nextChar = string[string.index(string.startIndex, offsetBy: index + 1)] as? Int {
temp.append(String(nextChar))
index += 1
}
stack.append(Double(temp))
} else {
throw CalculateError.invalidInput
}
}
}
return stack.reduce(0, +)
}
do {
print(try calculate("2+2*2"))
} catch CalculateError.invalidInput {
print("Invalid input")
} catch {
print("Error")
}
```while let nextChar = string[string.index(string.startIndex, offsetBy: index + 1)] as? Int { // cast from 'Character' to unrelated type 'Int' always failsstack.append(Double(temp)) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1)
index += 1
case "*":
let operand = stack.popLast() ?? 0
stack.append(operand * stack.popLast() ?? 0)
index += 1
case "/":
let operand = stack.popLast() ?? 0
stack.append(operand / stack.popLast() ?? 0)
index += 1
case "(":
var substring = string[string.index(string.startIndex, offsetBy: index)...]
substring = substring.dropFirst()
let result = calculate(substring)
stack.append(result)
index = string.index(string.startIndex, offsetBy: index + String(result).count)
case ")":
index += 1
return stack.popLast() ?? 0
default:
throw CalculateError.invalidInput
}
}
return stack.popLast() ?? 0
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1)
index += 1
case "*":
let operand = stack.popLast() ?? 0
stack.append(operand * stack.popLast() ?? 0)
index += 1
case "/":
let operand = stack.popLast() ?? 0
stack.append(operand / stack.popLast() ?? 0)
index += 1
case "(":
var substring = string[string.index(string.startIndex, offsetBy: index)...]
substring = substring.dropFirst()
let result = calculate(substring)
stack.append(result)
index = string.index(string.startIndex, offsetBy: index + String(result).count)
case ")":
index += 1
return stack.popLast() ?? 0
default:
throw CalculateError.invalidInput
}
}
return stack.popLast() ?? 0
}
do {
let result = try calculate("2+(2*2)")
print(result)
} catch CalculateError.invalidInput {
print("Invalid input")
} catch {
print("Error")
}
```stack.append(operand * stack.popLast() ?? 0) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'stack.append(operand / stack.popLast() ?? 0) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'let result = calculate(substring) // cannot convert value of type 'String.SubSequence' (aka 'Substring') to expected argument type 'String'index = string.index(string.startIndex, offsetBy: index + String(result).count) // cannot assign value of type 'String.Index' to type 'Int'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let character = string[string.index(string.startIndex, offsetBy: index)]
switch character {
case "+":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
case "-":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
stack.append(-number)
} else {
throw CalculateError.invalidInput
}
case "*":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
var temp = stack.removeLast()
stack.append(temp * number)
} else {
throw CalculateError.invalidInput
}
case "/":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
var temp = stack.removeLast()
stack.append(temp / number)
} else {
throw CalculateError.invalidInput
}
case "(":
index += 1
let startIndex = string.index(string.startIndex, offsetBy: index)
let bracketStack = [String]()
while string[startIndex] != ")" {
if let character = string[startIndex] as? String {
bracketStack.append(character)
index += 1
startIndex = string.index(string.startIndex, offsetBy: index)
} else {
throw CalculateError.invalidInput
}
}
index += 1
var temp = 0.0
while !bracketStack.isEmpty {
temp += Double(bracketStack.removeLast())!
}
stack.append(temp)
default:
break
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let character = string[string.index(string.startIndex, offsetBy: index)]
switch character {
case "+":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
case "-":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
stack.append(-number)
} else {
throw CalculateError.invalidInput
}
case "*":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
var temp = stack.removeLast()
stack.append(temp * number)
} else {
throw CalculateError.invalidInput
}
case "/":
index += 1
if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) {
var temp = stack.removeLast()
stack.append(temp / number)
} else {
throw CalculateError.invalidInput
}
case "(":
index += 1
let startIndex = string.index(string.startIndex, offsetBy: index)
let bracketStack = [String]()
while string[startIndex] != ")" {
if let character = string[startIndex] as? String {
bracketStack.append(character)
index += 1
startIndex = string.index(string.startIndex, offsetBy: index)
} else {
throw CalculateError.invalidInput
}
}
index += 1
var temp = 0.0
while !bracketStack.isEmpty {
temp += Double(bracketStack.removeLast())!
}
stack.append(temp)
default:
break
}
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
```if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) { // subscript 'subscript(_:)' requires that 'String.Index' conform to 'RangeExpression'if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) { // subscript 'subscript(_:)' requires that 'String.Index' conform to 'RangeExpression'stack.append(-number) // cannot convert value of type 'Float16' to expected argument type 'Double'if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) { // subscript 'subscript(_:)' requires that 'String.Index' conform to 'RangeExpression'if let number = Double(string[string.index(string.startIndex, offsetBy: index)]) { // subscript 'subscript(_:)' requires that 'String.Index' conform to 'RangeExpression'if let character = string[startIndex] as? String { // cast from 'Character' to unrelated type 'String' always failsbracketStack.append(character) // cannot use mutating member on immutable value: 'bracketStack' is a 'let' constantstartIndex = string.index(string.startIndex, offsetBy: index) // cannot assign to value: 'startIndex' is a 'let' constanttemp += Double(bracketStack.removeLast())! // cannot use mutating member on immutable value: 'bracketStack' is a 'let' constantenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1)
index += 1
case "*":
let b = stack.removeLast()
stack.append(stack.removeLast() * b)
index += 1
case "/":
let b = stack.removeLast()
stack.append(stack.removeLast() / b)
index += 1
case "(":
var sum = 0.0
var sign = 1.0
index += 1
while string[string.index(string.startIndex, offsetBy: index)] != ")" {
switch string[string.index(string.startIndex, offsetBy: index)] {
case "+":
sign = 1
index += 1
case "-":
sign = -1
index += 1
default:
let num = Double(String(charactersUntil: &string[string.index(string.startIndex, offsetBy: index)]))!
sum += sign * num
index += num.description.count
}
}
stack.append(sum)
default:
index += 1
}
}
return stack.reduce(0.0, +)
}### Instruction:
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".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = 0
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
switch char {
case "+":
stack.append(0)
index += 1
case "-":
stack.append(-1)
index += 1
case "*":
let b = stack.removeLast()
stack.append(stack.removeLast() * b)
index += 1
case "/":
let b = stack.removeLast()
stack.append(stack.removeLast() / b)
index += 1
case "(":
var sum = 0.0
var sign = 1.0
index += 1
while string[string.index(string.startIndex, offsetBy: index)] != ")" {
switch string[string.index(string.startIndex, offsetBy: index)] {
case "+":
sign = 1
index += 1
case "-":
sign = -1
index += 1
default:
let num = Double(String(charactersUntil: &string[string.index(string.startIndex, offsetBy: index)]))!
sum += sign * num
index += num.description.count
}
}
stack.append(sum)
default:
index += 1
}
}
return stack.reduce(0.0, +)
}
do {
let result = try calculate("2+(2*2)")
print(result)
} catch CalculateError.invalidInput {
print("Invalid input")
}
```let num = Double(String(charactersUntil: &string[string.index(string.startIndex, offsetBy: index)]))! // cannot pass immutable value as inout argument: subscript is get-onlylet num = Double(String(charactersUntil: &string[string.index(string.startIndex, offsetBy: index)]))! // no exact matches in call to initializerfunc execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll() {
stdout = String(output)
}
if let error = task.stderr?.utf8.readAll() {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll() {
stdout = String(output)
}
if let error = task.stderr?.utf8.readAll() {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}
```if let output = task.stdout?.utf8.readAll() { // value of type 'Process' has no member 'stdout'if let error = task.stderr?.utf8.readAll() { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout {
stdout = String(output)
}
if let error = task.stderr {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout {
stdout = String(output)
}
if let error = task.stderr {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}
```if let output = task.stdout { // value of type 'Process' has no member 'stdout'if let error = task.stderr { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var out = ""
var err = ""
do {
try task.run()
if let stdout = task.stdout {
out = String(stdout)
}
if let stderr = task.stderr {
err = String(stderr)
}
} catch {
print("Failed to run process: \(error)")
}
return (out, err)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var out = ""
var err = ""
do {
try task.run()
if let stdout = task.stdout {
out = String(stdout)
}
if let stderr = task.stderr {
err = String(stderr)
}
} catch {
print("Failed to run process: \(error)")
}
return (out, err)
}
```if let stdout = task.stdout { // value of type 'Process' has no member 'stdout'if let stderr = task.stderr { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout {
stdout = String(output)
}
if let error = task.stderr {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout {
stdout = String(output)
}
if let error = task.stderr {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}
```if let output = task.stdout { // value of type 'Process' has no member 'stdout'if let error = task.stderr { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll() {
stdout = String(output)
}
if let error = task.stderr?.utf8.readAll() {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll() {
stdout = String(output)
}
if let error = task.stderr?.utf8.readAll() {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}
```if let output = task.stdout?.utf8.readAll() { // value of type 'Process' has no member 'stdout'if let error = task.stderr?.utf8.readAll() { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var out = ""
var err = ""
let completionHandler = { (process: Process, _: [Process.Signal]?) in
if let output = process.standardOutput?.utf8.readAll() {
out = String(output)
}
if let error = process.standardError?.utf8.readAll() {
err = String(error)
}
}
task.standardOutput?.fileHandleForReading?.fileHandle.waitUntilWritten()
task.standardError?.fileHandleForReading?.fileHandle.waitUntilWritten()
task.completionHandler = completionHandler
task.launch()
task.waitUntilExit()
return (out, err)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var out = ""
var err = ""
let completionHandler = { (process: Process, _: [Process.Signal]?) in
if let output = process.standardOutput?.utf8.readAll() {
out = String(output)
}
if let error = process.standardError?.utf8.readAll() {
err = String(error)
}
}
task.standardOutput?.fileHandleForReading?.fileHandle.waitUntilWritten()
task.standardError?.fileHandleForReading?.fileHandle.waitUntilWritten()
task.completionHandler = completionHandler
task.launch()
task.waitUntilExit()
return (out, err)
}
```let completionHandler = { (process: Process, _: [Process.Signal]?) in // 'Signal' is not a member type of class 'Foundation.Process'if let output = process.standardOutput?.utf8.readAll() { // value of type 'Any' has no member 'utf8'task.standardOutput?.fileHandleForReading?.fileHandle.waitUntilWritten() // value of type 'Any' has no member 'fileHandleForReading'task.standardError?.fileHandleForReading?.fileHandle.waitUntilWritten() // value of type 'Any' has no member 'fileHandleForReading'task.completionHandler = completionHandler // value of type 'Process' has no member 'completionHandler'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll() {
stdout.append(String(output))
}
if let error = task.stderr?.utf8.readAll() {
stderr.append(String(error))
}
} catch {
print("Error: \(error.localizedDescription)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll() {
stdout.append(String(output))
}
if let error = task.stderr?.utf8.readAll() {
stderr.append(String(error))
}
} catch {
print("Error: \(error.localizedDescription)")
}
return (stdout, stderr)
}
```if let output = task.stdout?.utf8.readAll() { // value of type 'Process' has no member 'stdout'if let error = task.stderr?.utf8.readAll() { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.standardOutput?.lines {
stdout = output.joined(separator: "\n")
}
if let error = task.standardError?.lines {
stderr = error.joined(separator: "\n")
}
} catch {
print("Error: \(error.localizedDescription)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.standardOutput?.lines {
stdout = output.joined(separator: "\n")
}
if let error = task.standardError?.lines {
stderr = error.joined(separator: "\n")
}
} catch {
print("Error: \(error.localizedDescription)")
}
return (stdout, stderr)
}
```if let output = task.standardOutput?.lines { // value of type 'Any' has no member 'lines'if let error = task.standardError?.lines { // value of type 'Any' has no member 'lines'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout {
stdout = String(output)
}
if let error = task.stderr {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout {
stdout = String(output)
}
if let error = task.stderr {
stderr = String(error)
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}
```if let output = task.stdout { // value of type 'Process' has no member 'stdout'if let error = task.stderr { // value of type 'Process' has no member 'stderr'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll().first?.first {
stdout.append(String(output))
}
if let error = task.stderr?.utf8.readAll().first?.first {
stderr.append(String(error))
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}### Instruction:
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.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
var stdout = ""
var stderr = ""
do {
try task.run()
if let output = task.stdout?.utf8.readAll().first?.first {
stdout.append(String(output))
}
if let error = task.stderr?.utf8.readAll().first?.first {
stderr.append(String(error))
}
} catch {
print("Error: \(error)")
}
return (stdout, stderr)
}
```if let output = task.stdout?.utf8.readAll().first?.first { // value of type 'Process' has no member 'stdout'if let error = task.stderr?.utf8.readAll().first?.first { // value of type 'Process' has no member 'stderr'func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Memoization function that caches the results of expensive computations.
### Response:
```swift
func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let result = cache[key] {
return result
} else {
let result = function(key)
cache[key] = result
return result
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while (attempts > 0)
return try task()
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while (attempts > 0)
return try task()
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(attempts > 0)
return try task()
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(attempts > 0)
return try task()
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while (attempts > 0)
return try task()
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while (attempts > 0)
return try task()
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(attempts > 0)
return try task()
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(attempts > 0)
return try task()
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(attempts > 0)
throw NSError(domain: NSCocoaErrorDomain, code: NSFileNoSuchFileError, userInfo: [NSLocalizedDescriptionKey : "Retry limit exceeded"])
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch let error {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(attempts > 0)
throw NSError(domain: NSCocoaErrorDomain, code: NSFileNoSuchFileError, userInfo: [NSLocalizedDescriptionKey : "Retry limit exceeded"])
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantfunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}### Instruction:
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.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
repeat {
do {
return try task()
} catch {
if attempts == 0 {
throw error
}
attempts -= 1
}
} while(true)
}
```attempts -= 1 // left side of mutating operator isn't mutable: 'attempts' is a 'let' constantprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}
```private var registrations: [Type: (() -> Any)] = [:] // cannot find type 'Type' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (registeredType, factory) in self.registrations {
if registeredType == type {
return factory()
}
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (registeredType, factory) in self.registrations {
if registeredType == type {
return factory()
}
}
return nil
}
}
```for (registeredType, factory) in self.registrations { // tuple pattern cannot match values of non-tuple type 'Any'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}
```private var registrations: [Type: (() -> Any)] = [:] // cannot find type 'Type' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}
```private var registrations: [Type: (() -> Any)] = [:] // cannot find type 'Type' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Type: (() -> Any)] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations[type] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = self.registrations[type] {
return factory()
}
return nil
}
}
```private var registrations: [Type: (() -> Any)] = [:] // cannot find type 'Type' in scopeprotocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (key, factory) in registrations {
if key == type {
return factory()
}
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (key, factory) in registrations {
if key == type {
return factory()
}
}
return nil
}
}
```for (key, factory) in registrations { // tuple pattern cannot match values of non-tuple type 'Any'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for registration in self.registrations {
if registration.type == type {
return registration.factory()
}
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for registration in self.registrations {
if registration.type == type {
return registration.factory()
}
}
return nil
}
}
```if registration.type == type { // value of type 'Any' has no member 'type'return registration.factory() // value of type 'Any' has no member 'factory'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (key, value) in self.registrations {
if key as? T == type {
return value()
}
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
self.registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (key, value) in self.registrations {
if key as? T == type {
return value()
}
}
return nil
}
}
```for (key, value) in self.registrations { // tuple pattern cannot match values of non-tuple type 'Any'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (registeredType, factory) in registrations {
if registeredType == type {
return factory()
}
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (registeredType, factory) in registrations {
if registeredType == type {
return factory()
}
}
return nil
}
}
```for (registeredType, factory) in registrations { // tuple pattern cannot match values of non-tuple type 'Any'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (registeredType, _) in registrations {
if registeredType == type {
return registrations.first(where: { $0.type == type })?.factory()
}
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var registrations: [Any] = []
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
registrations.append((type, factory))
}
func resolve<T>(_ type: T.Type) -> T? {
for (registeredType, _) in registrations {
if registeredType == type {
return registrations.first(where: { $0.type == type })?.factory()
}
}
return nil
}
}
```for (registeredType, _) in registrations { // tuple pattern cannot match values of non-tuple type 'Any'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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to
if let nextState = nextState {
self.state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to
if let nextState = nextState {
self.state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to // value of tuple type '(State, State, Event)' has no member 'to'let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to // value of tuple type '(State, State, Event)' has no member 'from'let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to // value of tuple type '(State, State, Event)' has no member 'event'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> : StateMachineProtocol {
enum StateType {
case state1
case state2
case state3
}
enum EventType {
case event1
case event2
case event3
}
var state: State
var transitions: [(from: StateType, to: StateType, event: EventType)]
init(state: State) {
self.state = state
self.transitions = []
}
func trigger(event: Event) {
for transition in transitions {
if transition.from == StateType(rawValue: self.state as! StateType), transition.event == EventType(rawValue: event as! EventType) {
self.state = self.state as! State
print("State changed to: \(self.state)")
}
}
}
func registerTransition(from: StateType, to: StateType, event: EventType) {
self.transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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 {
enum StateType {
case state1
case state2
case state3
}
enum EventType {
case event1
case event2
case event3
}
var state: State
var transitions: [(from: StateType, to: StateType, event: EventType)]
init(state: State) {
self.state = state
self.transitions = []
}
func trigger(event: Event) {
for transition in transitions {
if transition.from == StateType(rawValue: self.state as! StateType), transition.event == EventType(rawValue: event as! EventType) {
self.state = self.state as! State
print("State changed to: \(self.state)")
}
}
}
func registerTransition(from: StateType, to: StateType, event: EventType) {
self.transitions.append((from, to, event))
}
}
```class StateMachine<State: Hashable, Event: Hashable> : StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'if transition.from == StateType(rawValue: self.state as! StateType), transition.event == EventType(rawValue: event as! EventType) { // 'StateMachine<State, Event>.StateType' cannot be constructed because it has no accessible initializersif transition.from == StateType(rawValue: self.state as! StateType), transition.event == EventType(rawValue: event as! EventType) { // 'StateMachine<State, Event>.EventType' cannot be constructed because it has no accessible initializersself.state = self.state as! State // forced cast of 'State' to same type has no effectstateMachine.registerTransition(from: .red, to: .green, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.EventType' has no member 'timer'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.StateType' has no member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.StateType' has no member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.StateType' has no member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.StateType' has no member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.EventType' has no member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.StateType' has no member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.EventType' has no member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // type 'StateMachine<TrafficLightState, TrafficLightEvent>.StateType' has no member 'red'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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [State: [Event: (StateMachine<State, Event>, State)]]
init(state: State) {
self.state = state
self.transitions = [:]
}
func trigger(event: Event) {
if let transition = transitions[state, event.description] {
state = transition.value.state
transition.value.trigger(event: event)
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, event.description] = [to: self]
}
override var stringDescription: String {
return "\(state)"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [State: [Event: (StateMachine<State, Event>, State)]]
init(state: State) {
self.state = state
self.transitions = [:]
}
func trigger(event: Event) {
if let transition = transitions[state, event.description] {
state = transition.value.state
transition.value.trigger(event: event)
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, event.description] = [to: self]
}
override var stringDescription: String {
return "\(state)"
}
}
```if let transition = transitions[state, event.description] { // missing argument label 'default:' in subscriptif let transition = transitions[state, event.description] { // cannot convert value of type 'String' to expected argument type '[Event : (StateMachine<State, Event>, State)]'transitions[from, event.description] = [to: self] // cannot convert value of type 'StateMachine<State, Event>' to expected dictionary value type '(StateMachine<State, Event>, State)'transitions[from, event.description] = [to: self] // cannot convert value of type 'String' to expected argument type '[Event : (StateMachine<State, Event>, State)]'transitions[from, event.description] = [to: self] // cannot convert value of type 'State' to expected dictionary key type 'Event'transitions[from, event.description] = [to: self] // missing argument label 'default:' in subscriptoverride var stringDescription: String { // property does not override any property from its superclasslet stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
var state: State {
return state
}
func trigger(event: Event) {
for transition in transitions {
if transition.from == state && transition.event == event {
state = transition.to
break
}
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
var state: State {
return state
}
func trigger(event: Event) {
for transition in transitions {
if transition.from == state && transition.event == event {
state = transition.to
break
}
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```var state: State { // invalid redeclaration of 'state'if transition.from == state && transition.event == event { // value of tuple type '(State, State, Event)' has no member 'from'if transition.from == state && transition.event == event { // value of tuple type '(State, State, Event)' has no member 'event'state = transition.to // value of tuple type '(State, State, Event)' has no member 'to'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to
if let nextState = nextState {
self.state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to
if let nextState = nextState {
self.state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to // value of tuple type '(State, State, Event)' has no member 'to'let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to // value of tuple type '(State, State, Event)' has no member 'from'let nextState = transitions.first(where: { $0.event == event && $0.from == self.state })?.to // value of tuple type '(State, State, Event)' has no member 'event'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> : StateMachineProtocol {
enum StateType: String, CaseIterable {
case state1
case state2
case state3
}
enum EventType: String, CaseIterable {
case event1
case event2
case event3
}
var state: State
var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
for transition in transitions {
if transition.from == state, transition.event == event {
self.state = transition.to
break
}
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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 {
enum StateType: String, CaseIterable {
case state1
case state2
case state3
}
enum EventType: String, CaseIterable {
case event1
case event2
case event3
}
var state: State
var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
for transition in transitions {
if transition.from == state, transition.event == event {
self.state = transition.to
break
}
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if transition.from == state, transition.event == event { // value of tuple type '(State, State, Event)' has no member 'from'if transition.from == state, transition.event == event { // value of tuple type '(State, State, Event)' has no member 'event'self.state = transition.to // value of tuple type '(State, State, Event)' has no member '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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
var state: State {
return state
}
func trigger(event: Event) {
let possibleTransition = transitions.filter { $0.event == event && $0.from == self.state }
if !possibleTransition.isEmpty {
self.state = possibleTransition.first?.to ?? self.state
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
var state: State {
return state
}
func trigger(event: Event) {
let possibleTransition = transitions.filter { $0.event == event && $0.from == self.state }
if !possibleTransition.isEmpty {
self.state = possibleTransition.first?.to ?? self.state
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```var state: State { // invalid redeclaration of 'state'let possibleTransition = transitions.filter { $0.event == event && $0.from == self.state } // trailing closure passed to parameter of type 'Predicate<(State, State, Event)>' that does not accept a closurelet stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let transition = transitions.first(where: { $0.event == event && $0.from == state })
guard let transition = transition else {
print("No transition found for event \(event) from state \(state)")
return
}
self.state = transition.to
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let transition = transitions.first(where: { $0.event == event && $0.from == state })
guard let transition = transition else {
print("No transition found for event \(event) from state \(state)")
return
}
self.state = transition.to
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```let transition = transitions.first(where: { $0.event == event && $0.from == state }) // cannot call value of non-function type '(State, State, Event)?'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let transition = transitions.first(where: { $0.event == event && $0.from == self.state })
guard let transition = transition else {
print("No transition found for event \(event) from state \(self.state)")
return
}
self.state = transition.to
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let transition = transitions.first(where: { $0.event == event && $0.from == self.state })
guard let transition = transition else {
print("No transition found for event \(event) from state \(self.state)")
return
}
self.state = transition.to
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```let transition = transitions.first(where: { $0.event == event && $0.from == self.state }) // cannot call value of non-function type '(State, State, Event)?'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let possibleTransitions = transitions.filter { $0.event == event && $0.from == self.state }
if !possibleTransitions.isEmpty {
self.state = possibleTransitions.first?.to ?? self.state
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Finite state machine with possibility to register custom transitions between states.
### Response:
```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> where State: CustomStringConvertible, Event: CustomStringConvertible {
private var state: State
private var transitions: [(State, State, Event)] = []
init(state: State) {
self.state = state
}
func trigger(event: Event) {
let possibleTransitions = transitions.filter { $0.event == event && $0.from == self.state }
if !possibleTransitions.isEmpty {
self.state = possibleTransitions.first?.to ?? self.state
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append((from, to, event))
}
}
```let possibleTransitions = transitions.filter { $0.event == event && $0.from == self.state } // trailing closure passed to parameter of type 'Predicate<(State, State, Event)>' that does not accept a closurelet stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // cannot infer contextual base in reference to member 'green'let stateMachine = StateMachine<TrafficLightState, TrafficLightEvent>(state: .green) // type 'TrafficLightState' does not conform to protocol 'CustomStringConvertible'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'red'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .red, to: .green, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'green'stateMachine.registerTransition(from: .green, to: .yellow, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'yellow'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'timer'stateMachine.registerTransition(from: .yellow, to: .red, event: .timer) // cannot infer contextual base in reference to member 'red'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .yellow) // type 'Equatable' has no member 'yellow'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .red) // type 'Equatable' has no member 'red'stateMachine.trigger(event: .timer) // cannot infer contextual base in reference to member 'timer'XCTAssertEqual(stateMachine.state, .green) // type 'Equatable' has no member 'green'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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}### Instruction:
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.
### Response:
```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.max { $0.treeDepth < $1.treeDepth }?.treeDepth ?? 0
}
}
}
```protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<Element> implements StackProtocol {
private var elements: [Element] = []
func push(_ element: Element) {
self.elements.append(element)
}
func pop() -> Element? {
return self.elements.popLast()
}
}
```class Stack<Element> implements StackProtocol { // expected '{' in classstack.push(1) // value of type 'Stack<Int>' has no member 'push'stack.push(2) // value of type 'Stack<Int>' has no member 'push'XCTAssertEqual(stack.pop(), 2) // value of type 'Stack<Int>' has no member 'pop'XCTAssertEqual(stack.pop(), 1) // value of type 'Stack<Int>' has no member 'pop'XCTAssertNil(stack.pop()) // value of type 'Stack<Int>' has no member 'pop'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
order.removeAll(matching: key)
order.append(key)
return element
}
return nil
}
func set(key: Key, value: Element) {
if let existing = get(key: key) {
cache.removeValue(forKey: key)
order.removeAll(matching: key)
}
if cache.count >= capacity {
let oldestKey = order.first!
cache.removeValue(forKey: oldestKey)
order.removeAll(matching: oldestKey)
}
cache[key] = value
order.append(key)
}
}
protocol CacheElement {
// Empty protocol
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private var cache: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
order.removeAll(matching: key)
order.append(key)
return element
}
return nil
}
func set(key: Key, value: Element) {
if let existing = get(key: key) {
cache.removeValue(forKey: key)
order.removeAll(matching: key)
}
if cache.count >= capacity {
let oldestKey = order.first!
cache.removeValue(forKey: oldestKey)
order.removeAll(matching: oldestKey)
}
cache[key] = value
order.append(key)
}
}
protocol CacheElement {
// Empty protocol
}
```order.removeAll(matching: key) // extra argument 'matching' in callorder.removeAll(matching: key) // extra argument 'matching' in callorder.removeAll(matching: oldestKey) // extra argument 'matching' in calllet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
var capacity: Int
var cache: Dictionary<Key, Element>
var leastRecentlyUsed: [Key]
init(capacity: Int) {
self.capacity = capacity
self.cache = [:]
self.leastRecentlyUsed = []
}
func get(key: Key) -> Element? {
if let element = cache[key] {
leastRecentlyUsed = leastRecentlyUsed.filter { $0 != key }
leastRecentlyUsed.append(key)
return element
}
return nil
}
func set(element: Element, forKey: Key) {
if let oldElement = get(key: forKey) {
cache.removeValue(forKey: forKey)
}
if cache.count >= capacity {
let leastRecentlyUsedKey = leastRecentlyUsed.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
leastRecentlyUsed = leastRecentlyUsed.filter { $0 != leastRecentlyUsedKey }
}
cache[forKey] = element
leastRecentlyUsed.append(forKey)
}
}
protocol CacheElement {
// Define the protocol for your element here
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
var capacity: Int
var cache: Dictionary<Key, Element>
var leastRecentlyUsed: [Key]
init(capacity: Int) {
self.capacity = capacity
self.cache = [:]
self.leastRecentlyUsed = []
}
func get(key: Key) -> Element? {
if let element = cache[key] {
leastRecentlyUsed = leastRecentlyUsed.filter { $0 != key }
leastRecentlyUsed.append(key)
return element
}
return nil
}
func set(element: Element, forKey: Key) {
if let oldElement = get(key: forKey) {
cache.removeValue(forKey: forKey)
}
if cache.count >= capacity {
let leastRecentlyUsedKey = leastRecentlyUsed.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
leastRecentlyUsed = leastRecentlyUsed.filter { $0 != leastRecentlyUsedKey }
}
cache[forKey] = element
leastRecentlyUsed.append(forKey)
}
}
protocol CacheElement {
// Define the protocol for your element here
}
```if let oldElement = get(key: forKey) { // value 'oldElement' was defined but never used; consider replacing with boolean testlet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: Cacheable {
private let capacity: Int
private var cache: Dictionary<Key, Element>
private var accessOrder: OrderedSet<Key>
init(capacity: Int) {
self.capacity = capacity
self.cache = [:]
self.accessOrder = OrderedSet()
}
func get(key: Key) -> Element? {
if let element = cache[key] {
accessOrder.remove(key)
accessOrder.insert(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let existingElement = get(key: key) {
cache.removeValue(forKey: key)
accessOrder.remove(key)
}
if cache.count >= capacity {
let leastRecentlyUsedKey = accessOrder.first ?? Key()
cache.removeValue(forKey: leastRecentlyUsedKey)
accessOrder.remove(leastRecentlyUsedKey)
}
cache[key] = element
accessOrder.insert(key)
}
}
protocol Cacheable {
// Define the protocol for elements that can be cached
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: Cacheable {
private let capacity: Int
private var cache: Dictionary<Key, Element>
private var accessOrder: OrderedSet<Key>
init(capacity: Int) {
self.capacity = capacity
self.cache = [:]
self.accessOrder = OrderedSet()
}
func get(key: Key) -> Element? {
if let element = cache[key] {
accessOrder.remove(key)
accessOrder.insert(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let existingElement = get(key: key) {
cache.removeValue(forKey: key)
accessOrder.remove(key)
}
if cache.count >= capacity {
let leastRecentlyUsedKey = accessOrder.first ?? Key()
cache.removeValue(forKey: leastRecentlyUsedKey)
accessOrder.remove(leastRecentlyUsedKey)
}
cache[key] = element
accessOrder.insert(key)
}
}
protocol Cacheable {
// Define the protocol for elements that can be cached
}
```private var accessOrder: OrderedSet<Key> // cannot find type 'OrderedSet' in scopeself.accessOrder = OrderedSet() // cannot find 'OrderedSet' in scopelet leastRecentlyUsedKey = accessOrder.first ?? Key() // type 'Key' has no member 'init'let cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'Cacheable'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: Cacheable {
private let capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let _ = cache[key] {
cache.removeValue(forKey: key)
}
if keys.count == capacity {
let leastRecentlyUsedKey = keys.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
keys.removeAll(where: { $0 == leastRecentlyUsedKey })
}
cache[key] = element
keys.append(key)
}
}
protocol Cacheable {
// Define the protocol for elements that can be cached
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: Cacheable {
private let capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let _ = cache[key] {
cache.removeValue(forKey: key)
}
if keys.count == capacity {
let leastRecentlyUsedKey = keys.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
keys.removeAll(where: { $0 == leastRecentlyUsedKey })
}
cache[key] = element
keys.append(key)
}
}
protocol Cacheable {
// Define the protocol for elements that can be cached
}
```let cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'Cacheable'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
cache.removeValue(forKey: key)
keys.removeAll(where: { $0 == key })
}
if keys.count == capacity {
let leastRecentlyUsedKey = keys.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
keys.removeAll(where: { $0 == leastRecentlyUsedKey })
}
cache[key] = element
keys.append(key)
}
}
protocol CacheElement {
// Define your element protocol here
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
cache.removeValue(forKey: key)
keys.removeAll(where: { $0 == key })
}
if keys.count == capacity {
let leastRecentlyUsedKey = keys.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
keys.removeAll(where: { $0 == leastRecentlyUsedKey })
}
cache[key] = element
keys.append(key)
}
}
protocol CacheElement {
// Define your element protocol here
}
```if let oldElement = get(key: key) { // value 'oldElement' was defined but never used; consider replacing with boolean testlet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
var capacity: Int
var cache: [Key: Element] = [:]
var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
remove(key: key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let _ = cache[key] {
remove(key: key)
}
if keys.count == capacity {
removeOldest()
}
cache[key] = element
keys.append(key)
}
private func removeOldest() {
let oldestKey = keys.first!
keys.remove(at: keys.first!)
cache.removeValue(forKey: oldestKey)
}
func remove(key: Key) {
if let element = cache[key] {
keys.removeAll(where: { $0 == key })
cache.removeValue(forKey: key)
}
}
}
protocol CacheElement {
// Define your element protocol here
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
var capacity: Int
var cache: [Key: Element] = [:]
var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
func get(key: Key) -> Element? {
if let element = cache[key] {
remove(key: key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let _ = cache[key] {
remove(key: key)
}
if keys.count == capacity {
removeOldest()
}
cache[key] = element
keys.append(key)
}
private func removeOldest() {
let oldestKey = keys.first!
keys.remove(at: keys.first!)
cache.removeValue(forKey: oldestKey)
}
func remove(key: Key) {
if let element = cache[key] {
keys.removeAll(where: { $0 == key })
cache.removeValue(forKey: key)
}
}
}
protocol CacheElement {
// Define your element protocol here
}
```keys.remove(at: keys.first!) // cannot convert value of type 'Key' to expected argument type 'Int'if let element = cache[key] { // value 'element' was defined but never used; consider replacing with boolean testlet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private var cache: Dictionary<Key, Element>
private var accessOrder: OrderedSet<Key>
init(capacity: Int) {
self.capacity = capacity
self.cache = [:]
self.accessOrder = OrderedSet()
}
func get(key: Key) -> Element? {
if let element = cache[key] {
accessOrder.remove(key)
accessOrder.insert(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
cache.removeValue(forKey: key)
accessOrder.remove(key)
}
if cache.count >= capacity {
let leastRecentlyUsedKey = accessOrder.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
accessOrder.remove(leastRecentlyUsedKey)
}
cache[key] = element
accessOrder.insert(key)
}
}
protocol CacheElement {
// Define your element protocol here
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private var cache: Dictionary<Key, Element>
private var accessOrder: OrderedSet<Key>
init(capacity: Int) {
self.capacity = capacity
self.cache = [:]
self.accessOrder = OrderedSet()
}
func get(key: Key) -> Element? {
if let element = cache[key] {
accessOrder.remove(key)
accessOrder.insert(key)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
cache.removeValue(forKey: key)
accessOrder.remove(key)
}
if cache.count >= capacity {
let leastRecentlyUsedKey = accessOrder.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
accessOrder.remove(leastRecentlyUsedKey)
}
cache[key] = element
accessOrder.insert(key)
}
}
protocol CacheElement {
// Define your element protocol here
}
```private var accessOrder: OrderedSet<Key> // cannot find type 'OrderedSet' in scopeself.accessOrder = OrderedSet() // cannot find 'OrderedSet' in scopelet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private let map: Dictionary<Key, Element>
private var orderedKeys: [Key]
init(capacity: Int) {
self.capacity = capacity
self.map = [:]
self.orderedKeys = []
}
func get(key: Key) -> Element? {
if let element = map[key] {
remove(key: key)
insert(element: element)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
remove(key: key)
}
else if orderedKeys.count == capacity {
remove(oldestKey: orderedKeys.first!)
}
insert(element: element)
}
private func insert(element: Element) {
map[element.key] = element
orderedKeys.append(element.key)
}
private func remove(key: Key) {
map.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func remove(oldestKey: Key) {
map.removeValue(forKey: oldestKey)
orderedKeys.removeAll(where: { $0 == oldestKey })
}
}
protocol CacheElement {
var key: AnyHashable { get }
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private let map: Dictionary<Key, Element>
private var orderedKeys: [Key]
init(capacity: Int) {
self.capacity = capacity
self.map = [:]
self.orderedKeys = []
}
func get(key: Key) -> Element? {
if let element = map[key] {
remove(key: key)
insert(element: element)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
remove(key: key)
}
else if orderedKeys.count == capacity {
remove(oldestKey: orderedKeys.first!)
}
insert(element: element)
}
private func insert(element: Element) {
map[element.key] = element
orderedKeys.append(element.key)
}
private func remove(key: Key) {
map.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func remove(oldestKey: Key) {
map.removeValue(forKey: oldestKey)
orderedKeys.removeAll(where: { $0 == oldestKey })
}
}
protocol CacheElement {
var key: AnyHashable { get }
}
```if let oldElement = get(key: key) { // value 'oldElement' was defined but never used; consider replacing with boolean testmap[element.key] = element // cannot convert value of type 'AnyHashable' to expected argument type 'Key'orderedKeys.append(element.key) // cannot convert value of type 'AnyHashable' to expected argument type 'Key'map.removeValue(forKey: key) // cannot use mutating member on immutable value: 'map' is a 'let' constantmap.removeValue(forKey: oldestKey) // cannot use mutating member on immutable value: 'map' is a 'let' constantlet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private let map: Dictionary<Key, Element>
private var orderedKeys: [Key]
init(capacity: Int) {
self.capacity = capacity
self.map = [:]
self.orderedKeys = []
}
func get(key: Key) -> Element? {
if let element = map[key] {
remove(key: key)
insert(element: element)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let existingElement = get(key: key) {
remove(key: key)
} else if orderedKeys.count == capacity {
remove(oldestKey: orderedKeys.first!)
}
insert(element: element)
}
private func insert(element: Element) {
map[element.key] = element
orderedKeys.append(element.key)
}
private func remove(key: Key) {
map.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func remove(oldestKey: Key) {
map.removeValue(forKey: oldestKey)
orderedKeys.removeAll(where: { $0 == oldestKey })
}
}
protocol CacheElement {
var key: Any { get }
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private let map: Dictionary<Key, Element>
private var orderedKeys: [Key]
init(capacity: Int) {
self.capacity = capacity
self.map = [:]
self.orderedKeys = []
}
func get(key: Key) -> Element? {
if let element = map[key] {
remove(key: key)
insert(element: element)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let existingElement = get(key: key) {
remove(key: key)
} else if orderedKeys.count == capacity {
remove(oldestKey: orderedKeys.first!)
}
insert(element: element)
}
private func insert(element: Element) {
map[element.key] = element
orderedKeys.append(element.key)
}
private func remove(key: Key) {
map.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func remove(oldestKey: Key) {
map.removeValue(forKey: oldestKey)
orderedKeys.removeAll(where: { $0 == oldestKey })
}
}
protocol CacheElement {
var key: Any { get }
}
```if let existingElement = get(key: key) { // value 'existingElement' was defined but never used; consider replacing with boolean testmap[element.key] = element // cannot assign through subscript: subscript is get-onlymap[element.key] = element // cannot assign value of type 'Element' to subscript of type 'Dictionary<Key, Element>.SubSequence' (aka 'Slice<Dictionary<Key, Element>>')map[element.key] = element // subscript 'subscript(_:)' requires that 'R' conform to 'RangeExpression'orderedKeys.append(element.key) // cannot convert value of type 'Any' to expected argument type 'Key'map.removeValue(forKey: key) // cannot use mutating member on immutable value: 'map' is a 'let' constantmap.removeValue(forKey: oldestKey) // cannot use mutating member on immutable value: 'map' is a 'let' constantlet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private let map: Dictionary<Key, Element>
private var orderedKeys: [Key]
init(capacity: Int) {
self.capacity = capacity
self.map = [:]
self.orderedKeys = []
}
func get(key: Key) -> Element? {
if let element = map[key] {
remove(key: key)
insert(element: element)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
remove(key: key)
} else if orderedKeys.count == capacity {
remove(oldestKey: orderedKeys[0])
}
insert(element: element)
}
private func insert(element: Element) {
map[element.key] = element
orderedKeys.append(element.key)
}
private func remove(key: Key) {
map.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func remove(oldestKey: Key) {
map.removeValue(forKey: oldestKey)
orderedKeys.removeAll(where: { $0 == oldestKey })
}
}
protocol CacheElement {
var key: Any { get }
}### Instruction:
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.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element> where Element: CacheElement {
private let capacity: Int
private let map: Dictionary<Key, Element>
private var orderedKeys: [Key]
init(capacity: Int) {
self.capacity = capacity
self.map = [:]
self.orderedKeys = []
}
func get(key: Key) -> Element? {
if let element = map[key] {
remove(key: key)
insert(element: element)
return element
}
return nil
}
func set(element: Element, forKey key: Key) {
if let oldElement = get(key: key) {
remove(key: key)
} else if orderedKeys.count == capacity {
remove(oldestKey: orderedKeys[0])
}
insert(element: element)
}
private func insert(element: Element) {
map[element.key] = element
orderedKeys.append(element.key)
}
private func remove(key: Key) {
map.removeValue(forKey: key)
orderedKeys.removeAll(where: { $0 == key })
}
private func remove(oldestKey: Key) {
map.removeValue(forKey: oldestKey)
orderedKeys.removeAll(where: { $0 == oldestKey })
}
}
protocol CacheElement {
var key: Any { get }
}
```if let oldElement = get(key: key) { // value 'oldElement' was defined but never used; consider replacing with boolean testmap[element.key] = element // cannot assign through subscript: subscript is get-onlymap[element.key] = element // cannot assign value of type 'Element' to subscript of type 'Dictionary<Key, Element>.SubSequence' (aka 'Slice<Dictionary<Key, Element>>')map[element.key] = element // subscript 'subscript(_:)' requires that 'R' conform to 'RangeExpression'orderedKeys.append(element.key) // cannot convert value of type 'Any' to expected argument type 'Key'map.removeValue(forKey: key) // cannot use mutating member on immutable value: 'map' is a 'let' constantmap.removeValue(forKey: oldestKey) // cannot use mutating member on immutable value: 'map' is a 'let' constantlet cache = Cache<String, Int>(capacity: 2) // type 'Int' does not conform to protocol 'CacheElement'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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```self.cache[key] = tuple // cannot assign through subscript: 'cache' is a 'let' constantself.cache.removeValue(forKey: key) // cannot use mutating member on immutable value: 'cache' is a 'let' constantThread.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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration, execute: {
self.cache.removeValue(forKey: key)
})
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration, execute: {
self.cache.removeValue(forKey: key)
})
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```self.cache[key] = tuple // cannot assign through subscript: 'cache' is a 'let' constantself.cache.removeValue(forKey: key) // cannot use mutating member on immutable value: 'cache' is a 'let' constantThread.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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```self.cache[key] = tuple // cannot assign through subscript: 'cache' is a 'let' constantself.cache.removeValue(forKey: key) // cannot use mutating member on immutable value: 'cache' is a 'let' constantThread.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: Dictionary<Key, (Value, TimeInterval)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
self.cache[key] = (value, Date().timeIntervalSinceNow + expiration)
}
func get(key: Key) -> Value? {
if let (value, _) = self.cache[key] {
if Date().timeIntervalSince(self.cache[key]!.1) > 0 {
return value
}
}
return nil
}
}### Instruction:
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.
### Response:
```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: Dictionary<Key, (Value, TimeInterval)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
self.cache[key] = (value, Date().timeIntervalSinceNow + expiration)
}
func get(key: Key) -> Value? {
if let (value, _) = self.cache[key] {
if Date().timeIntervalSince(self.cache[key]!.1) > 0 {
return value
}
}
return nil
}
}
```if Date().timeIntervalSince(self.cache[key]!.1) > 0 { // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'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, Date)]
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let expirationDate = Calendar.current.date(byAdding: .seconds, value: Int(expiration), to: date)
cache[key] = (value, expirationDate!)
}
func get(key: Key) -> Value? {
if let valueAndExpiration = cache[key], valueAndExpiration.1 > Date() {
return valueAndExpiration.0
} else {
return nil
}
}
}### Instruction:
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.
### Response:
```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, Date)]
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let expirationDate = Calendar.current.date(byAdding: .seconds, value: Int(expiration), to: date)
cache[key] = (value, expirationDate!)
}
func get(key: Key) -> Value? {
if let valueAndExpiration = cache[key], valueAndExpiration.1 > Date() {
return valueAndExpiration.0
} else {
return nil
}
}
}
```let expirationDate = Calendar.current.date(byAdding: .seconds, value: Int(expiration), to: date) // type 'Calendar.Component' has no member 'seconds'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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = (tuple, date.addingTimeInterval(expiration, relativeTo: date))
}
func get(key: Key) -> Value? {
if let entry = self.cache[key] {
let (value, expiration) = entry
if expiration > Date() {
return value
} else {
self.cache.removeValue(forKey: key)
}
}
return nil
}
}### Instruction:
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.
### Response:
```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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = (tuple, date.addingTimeInterval(expiration, relativeTo: date))
}
func get(key: Key) -> Value? {
if let entry = self.cache[key] {
let (value, expiration) = entry
if expiration > Date() {
return value
} else {
self.cache.removeValue(forKey: key)
}
}
return nil
}
}
```self.cache[key] = (tuple, date.addingTimeInterval(expiration, relativeTo: date)) // cannot assign through subscript: 'cache' is a 'let' constantself.cache[key] = (tuple, date.addingTimeInterval(expiration, relativeTo: date)) // extra argument 'relativeTo' in callself.cache[key] = (tuple, date.addingTimeInterval(expiration, relativeTo: date)) // cannot assign value of type '((Value, Date), Date)' to subscript of type '(Value, Date)'self.cache.removeValue(forKey: key) // cannot use mutating member on immutable value: 'cache' is a 'let' constantThread.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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```self.cache[key] = tuple // cannot assign through subscript: 'cache' is a 'let' constantself.cache.removeValue(forKey: key) // cannot use mutating member on immutable value: 'cache' is a 'let' constantThread.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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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 let cache: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```self.cache[key] = tuple // cannot assign through subscript: 'cache' is a 'let' constantself.cache.removeValue(forKey: key) // cannot use mutating member on immutable value: 'cache' is a 'let' constantThread.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: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration) {
self.cache.removeValue(forKey: key)
}
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertEqual failed: (nil) is not equal to (Optional("Hello, SwiftEval!"))protocol 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: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration, execute: {
self.cache.removeValue(forKey: key)
})
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}### Instruction:
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.
### Response:
```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: Dictionary<Key, (Value, Date)>
init() {
self.cache = [:]
}
func put(value: Value, key: Key, expiration: TimeInterval) {
let date = Date()
let tuple = (value, date)
self.cache[key] = tuple
DispatchQueue.main.asyncAfter(deadline: .now() + expiration, execute: {
self.cache.removeValue(forKey: key)
})
}
func get(key: Key) -> Value? {
if let value = self.cache[key] {
if value.1.timeIntervalSince(Date()) > 0 {
return value.0
}
}
return nil
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertEqual failed: (nil) is not equal to (Optional("Hello, SwiftEval!"))protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var result = Data()
for char in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.count) - 1)
let keyChar = key[keyIndex]
let charInt = Int(char.asciiValue!)
let keyInt = Int(keyChar.asciiValue!)
let xor = charInt ^ keyInt
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.count) - 1)
let keyChar = key[keyIndex]
let charInt = Int(char.asciiValue!)
let keyInt = Int(keyChar.asciiValue!)
let xor = charInt ^ keyInt
result.append(Character(String(xor)))
}
return result
}
}### Instruction:
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.
### Response:
```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 {
var result = Data()
for char in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.count) - 1)
let keyChar = key[keyIndex]
let charInt = Int(char.asciiValue!)
let keyInt = Int(keyChar.asciiValue!)
let xor = charInt ^ keyInt
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.count) - 1)
let keyChar = key[keyIndex]
let charInt = Int(char.asciiValue!)
let keyInt = Int(keyChar.asciiValue!)
let xor = charInt ^ keyInt
result.append(Character(String(xor)))
}
return result
}
}
```result.append(Character(String(xor))) // cannot convert value of type 'Character' to expected argument type 'Data'let charInt = Int(char.asciiValue!) // value of type 'UInt8' has no member 'asciiValue'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 {
var result = Data()
for char in string {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[keyChar])
let charInt = Int(char.asciiValue ?? 0)
let xor = keyInt ^ charInt
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[key.startIndex])
let charInt = Int(char.asciiValue ?? 0)
let xor = keyInt ^ charInt
result += String(xor)
}
return result
}
}### Instruction:
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.
### Response:
```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 {
var result = Data()
for char in string {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[keyChar])
let charInt = Int(char.asciiValue ?? 0)
let xor = keyInt ^ charInt
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[key.startIndex])
let charInt = Int(char.asciiValue ?? 0)
let xor = keyInt ^ charInt
result += String(xor)
}
return result
}
}
```let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'result.append(Character(String(xor))) // cannot convert value of type 'Character' to expected argument type 'Data'let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'let charInt = Int(char.asciiValue ?? 0) // value of type 'UInt8' has no member 'asciiValue'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 {
var result = Data()
for char in string {
let keyIndex = key.unicodeScalars.index(after: key.unicodeScalars.startIndex)
let keyChar = key.unicodeScalars[keyIndex]
let charInt = Int(char.value)
let keyInt = Int(keyChar.value)
let encryptedChar = Character(UnicodeScalar((charInt ^ keyInt) + 256)!)
result.append(encryptedChar.value)
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyIndex = key.unicodeScalars.index(after: key.unicodeScalars.startIndex)
let keyChar = key.unicodeScalars[keyIndex]
let charInt = Int(char.value)
let keyInt = Int(keyChar.value)
let decryptedChar = Character(UnicodeScalar((charInt ^ keyInt) - 256)!)
result.append(decryptedChar.value)
}
return result
}
}### Instruction:
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.
### Response:
```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 {
var result = Data()
for char in string {
let keyIndex = key.unicodeScalars.index(after: key.unicodeScalars.startIndex)
let keyChar = key.unicodeScalars[keyIndex]
let charInt = Int(char.value)
let keyInt = Int(keyChar.value)
let encryptedChar = Character(UnicodeScalar((charInt ^ keyInt) + 256)!)
result.append(encryptedChar.value)
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyIndex = key.unicodeScalars.index(after: key.unicodeScalars.startIndex)
let keyChar = key.unicodeScalars[keyIndex]
let charInt = Int(char.value)
let keyInt = Int(keyChar.value)
let decryptedChar = Character(UnicodeScalar((charInt ^ keyInt) - 256)!)
result.append(decryptedChar.value)
}
return result
}
}
```let charInt = Int(char.value) // value of type 'Character' has no member 'value'let charInt = Int(char.value) // value of type 'UInt8' has no member 'value'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 {
var encryptedData = Data()
for char in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(char.asciiValue ?? 0)
let keyAscii = Int(keyChar.asciiValue ?? 0)
let xor = ascii ^ keyAscii
let newChar = Character(UnicodeScalar(xor)!)
encryptedData.append(newChar.utf8)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for byte in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(keyChar.asciiValue ?? 0)
let xor = byte.utf8.value ^ ascii
let newChar = Character(UnicodeScalar(xor)!)
decryptedString.append(newChar)
}
return decryptedString
}
}### Instruction:
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.
### Response:
```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 {
var encryptedData = Data()
for char in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(char.asciiValue ?? 0)
let keyAscii = Int(keyChar.asciiValue ?? 0)
let xor = ascii ^ keyAscii
let newChar = Character(UnicodeScalar(xor)!)
encryptedData.append(newChar.utf8)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for byte in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(keyChar.asciiValue ?? 0)
let xor = byte.utf8.value ^ ascii
let newChar = Character(UnicodeScalar(xor)!)
decryptedString.append(newChar)
}
return decryptedString
}
}
```let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'let xor = byte.utf8.value ^ ascii // value of type 'UInt8' has no 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 {
var encryptedData = Data()
for character in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(character.asciiValue ?? 0) ^ Int(character.asciiValue ?? 0))
let encryptedCharacter = String(key[keyIndex])
let asciiValue = Int(encryptedCharacter.asciiValue ?? 0)
encryptedData.append(asciiValue!)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for asciiValue in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(asciiValue.wholeNumberValue ?? 0))
let decryptedCharacter = String(key[keyIndex])
decryptedString.append(decryptedCharacter)
}
return decryptedString
}
}### Instruction:
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.
### Response:
```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 {
var encryptedData = Data()
for character in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(character.asciiValue ?? 0) ^ Int(character.asciiValue ?? 0))
let encryptedCharacter = String(key[keyIndex])
let asciiValue = Int(encryptedCharacter.asciiValue ?? 0)
encryptedData.append(asciiValue!)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for asciiValue in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(asciiValue.wholeNumberValue ?? 0))
let decryptedCharacter = String(key[keyIndex])
decryptedString.append(decryptedCharacter)
}
return decryptedString
}
}
```let asciiValue = Int(encryptedCharacter.asciiValue ?? 0) // value of type 'String' has no member 'asciiValue'let keyIndex = key.index(key.startIndex, offsetBy: Int(asciiValue.wholeNumberValue ?? 0)) // value of type 'UInt8' has no member 'wholeNumberValue'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 {
var result = Data()
for char in string {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[keyChar])
let charInt = Int(char.asciiValue ?? 0)
let xor = keyInt ^ charInt
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for byte in data.map { $0.asciiValue ?? 0 } {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[key.startIndex])
let charInt = Int(byte)
let xor = keyInt ^ charInt
result += String(xor)
}
return result
}
}### Instruction:
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.
### Response:
```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 {
var result = Data()
for char in string {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[keyChar])
let charInt = Int(char.asciiValue ?? 0)
let xor = keyInt ^ charInt
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for byte in data.map { $0.asciiValue ?? 0 } {
let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyInt = Int(key.utf16[key.startIndex])
let charInt = Int(byte)
let xor = keyInt ^ charInt
result += String(xor)
}
return result
}
}
```let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'result.append(Character(String(xor))) // cannot convert value of type 'Character' to expected argument type 'Data'for byte in data.map { $0.asciiValue ?? 0 } { // value of type 'Data.Element' (aka 'UInt8') has no member 'asciiValue'let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'let keyChar = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'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 {
var encryptedData = Data()
for character in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(character.asciiValue ?? 0) ^ Int(character.asciiValue ?? 0))
let encryptedCharacter = String(key[keyIndex])
let asciiValue = Int(encryptedCharacter.asciiValue ?? 0)
encryptedData.append(asciiValue!)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for asciiValue in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(asciiValue) ^ Int(key.first!.asciiValue ?? 0))
let decryptedCharacter = String(key[keyIndex])
decryptedString.append(decryptedCharacter)
}
return decryptedString
}
}### Instruction:
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.
### Response:
```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 {
var encryptedData = Data()
for character in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(character.asciiValue ?? 0) ^ Int(character.asciiValue ?? 0))
let encryptedCharacter = String(key[keyIndex])
let asciiValue = Int(encryptedCharacter.asciiValue ?? 0)
encryptedData.append(asciiValue!)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for asciiValue in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(asciiValue) ^ Int(key.first!.asciiValue ?? 0))
let decryptedCharacter = String(key[keyIndex])
decryptedString.append(decryptedCharacter)
}
return decryptedString
}
}
```let asciiValue = Int(encryptedCharacter.asciiValue ?? 0) // value of type 'String' has no member 'asciiValue'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 {
var result = Data()
for char in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(char.asciiValue ?? 0)
let keyAscii = Int(keyChar.asciiValue ?? 0)
let xor = ascii ^ keyAscii
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(char.asciiValue ?? 0)
let keyAscii = Int(keyChar.asciiValue ?? 0)
let xor = ascii ^ keyAscii
result.append(Character(String(xor)))
}
return result
}
}### Instruction:
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.
### Response:
```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 {
var result = Data()
for char in string {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(char.asciiValue ?? 0)
let keyAscii = Int(keyChar.asciiValue ?? 0)
let xor = ascii ^ keyAscii
result.append(Character(String(xor)))
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for char in data {
let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset))
let keyChar = key[keyIndex]
let ascii = Int(char.asciiValue ?? 0)
let keyAscii = Int(keyChar.asciiValue ?? 0)
let xor = ascii ^ keyAscii
result.append(Character(String(xor)))
}
return result
}
}
```let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'result.append(Character(String(xor))) // cannot convert value of type 'Character' to expected argument type 'Data'let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // value of type 'String.UTF16View.Index' (aka 'String.Index') has no member 'offset'let keyIndex = key.index(key.startIndex, offsetBy: Int(key.utf16.index(key.startIndex).offset)) // no exact matches in call to instance method 'index'let ascii = Int(char.asciiValue ?? 0) // value of type 'UInt8' has no member 'asciiValue'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 {
var result = ""
for (index, char) in string.enumerated() {
let keyIndex = key.index(key.startIndex, offsetBy: index % key.count)
let keyChar = key[keyIndex]
let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!)
result.append(xor)
}
return Data(result.utf8)
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for (index, char) in data.enumerated() {
let keyIndex = key.index(key.startIndex, offsetBy: index % key.count)
let keyChar = key[keyIndex]
let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!)
result.append(xor)
}
return result
}
}### Instruction:
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.
### Response:
```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 {
var result = ""
for (index, char) in string.enumerated() {
let keyIndex = key.index(key.startIndex, offsetBy: index % key.count)
let keyChar = key[keyIndex]
let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!)
result.append(xor)
}
return Data(result.utf8)
}
func decrypt(_ data: Data, _ key: String) -> String {
var result = ""
for (index, char) in data.enumerated() {
let keyIndex = key.index(key.startIndex, offsetBy: index % key.count)
let keyChar = key[keyIndex]
let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!)
result.append(xor)
}
return result
}
}
```let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!) // value of type 'Character' has no member 'value'let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!) // value of type 'String.Element' (aka 'Character') has no member 'value'let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!) // cannot force unwrap value of non-optional type 'Unicode.Scalar'let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!) // value of type 'Data.Element' (aka 'UInt8') has no member 'value'let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!) // value of type 'Character' has no member 'value'let xor = Character(Unicode.Scalar((char.value ^ keyChar.value) + 256)!) // cannot force unwrap value of non-optional type '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 {
var data = Data(string.utf8)
for i in 0..<data.count {
let keyIndex = key.unicodeScalars.index(key.unicodeScalars.startIndex, offsetBy: i % key.count)
let stringIndex = string.unicodeScalars.index(string.unicodeScalars.startIndex, offsetBy: i % string.count)
let keyValue = key.unicodeScalars[keyIndex].value
let stringValue = string.unicodeScalars[stringIndex].value
data[i] = Data([data[i].bigEndianInt ^ keyValue])
}
return data
}
func decrypt(_ data: Data, _ key: String) -> String {
var string = ""
for i in 0..<data.count {
let keyIndex = key.unicodeScalars.index(key.unicodeScalars.startIndex, offsetBy: i % key.count)
let dataIndex = data.bigEndianInts[i / 8]
let keyValue = key.unicodeScalars[keyIndex].value
string += String(UnicodeScalar(Int(dataIndex ^ keyValue))) ?? ""
}
return string
}
}### Instruction:
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.
### Response:
```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 {
var data = Data(string.utf8)
for i in 0..<data.count {
let keyIndex = key.unicodeScalars.index(key.unicodeScalars.startIndex, offsetBy: i % key.count)
let stringIndex = string.unicodeScalars.index(string.unicodeScalars.startIndex, offsetBy: i % string.count)
let keyValue = key.unicodeScalars[keyIndex].value
let stringValue = string.unicodeScalars[stringIndex].value
data[i] = Data([data[i].bigEndianInt ^ keyValue])
}
return data
}
func decrypt(_ data: Data, _ key: String) -> String {
var string = ""
for i in 0..<data.count {
let keyIndex = key.unicodeScalars.index(key.unicodeScalars.startIndex, offsetBy: i % key.count)
let dataIndex = data.bigEndianInts[i / 8]
let keyValue = key.unicodeScalars[keyIndex].value
string += String(UnicodeScalar(Int(dataIndex ^ keyValue))) ?? ""
}
return string
}
}
```data[i] = Data([data[i].bigEndianInt ^ keyValue]) // value of type 'UInt8' has no member 'bigEndianInt'data[i] = Data([data[i].bigEndianInt ^ keyValue]) // cannot assign value of type 'Data' to subscript of type 'UInt8'data[i] = Data([data[i].bigEndianInt ^ keyValue]) // cannot convert value of type 'UInt32' to expected element type 'UInt8'let dataIndex = data.bigEndianInts[i / 8] // value of type 'Data' has no member 'bigEndianInts'string += String(UnicodeScalar(Int(dataIndex ^ keyValue))) ?? "" // value of optional type 'UnicodeScalar?' (aka 'Optional<Unicode.Scalar>') must be unwrapped to a value of type 'UnicodeScalar' (aka 'Unicode.Scalar')protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsCount: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
self.requestsCount += 1
if self.requestsCount > self.maxRequests {
return false
}
} else {
self.requestsCount = 1
self.lastRequestTime = Date()
}
} else {
self.lastRequestTime = Date()
}
return true
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsCount: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
self.requestsCount += 1
if self.requestsCount > self.maxRequests {
return false
}
} else {
self.requestsCount = 1
self.lastRequestTime = Date()
}
} else {
self.lastRequestTime = Date()
}
return true
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'let elapsedTime = Date().timeIntervalSince(lastRequestTime) { // initializer for conditional binding must have Optional type, not 'TimeInterval' (aka 'Double')Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
private var remainingRequests: Int
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.remainingRequests = maxRequests
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else {
self.lastRequestTime = Date()
self.remainingRequests = maxRequests
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest > timeInterval {
self.lastRequestTime = Date()
self.remainingRequests = maxRequests
return true
}
if self.remainingRequests > 0 {
self.remainingRequests -= 1
return true
}
return false
}
}### Instruction:
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.
### Response:
```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?
private var remainingRequests: Int
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.remainingRequests = maxRequests
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else {
self.lastRequestTime = Date()
self.remainingRequests = maxRequests
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest > timeInterval {
self.lastRequestTime = Date()
self.remainingRequests = maxRequests
return true
}
if self.remainingRequests > 0 {
self.remainingRequests -= 1
return true
}
return false
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest > timeInterval && requestsMade < maxRequests {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
return false
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest > timeInterval && requestsMade < maxRequests {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
return false
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest > self.timeInterval && self.requestsMade < self.maxRequests {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
return false
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest > self.timeInterval && self.requestsMade < self.maxRequests {
self.lastRequestTime = Date()
self.requestsMade += 1
return true
}
return false
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
requestsMade += 1
return requestsMade <= self.maxRequests
}
}
requestsMade = 1
self.lastRequestTime = Date()
return true
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
requestsMade += 1
return requestsMade <= self.maxRequests
}
}
requestsMade = 1
self.lastRequestTime = Date()
return true
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'let elapsedTime = Date().timeIntervalSince(lastRequestTime) { // initializer for conditional binding must have Optional type, not 'TimeInterval' (aka 'Double')Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
private var remainingRequests: Int
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.remainingRequests = maxRequests
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let remainingTime = timeInterval - (Date().timeIntervalSince(lastRequestTime)),
remainingTime > 0,
remainingRequests > 0 {
self.lastRequestTime = Date()
self.remainingRequests -= 1
return true
} else {
return false
}
}
}### Instruction:
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.
### Response:
```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?
private var remainingRequests: Int
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.remainingRequests = maxRequests
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let remainingTime = timeInterval - (Date().timeIntervalSince(lastRequestTime)),
remainingTime > 0,
remainingRequests > 0 {
self.lastRequestTime = Date()
self.remainingRequests -= 1
return true
} else {
return false
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'let remainingTime = timeInterval - (Date().timeIntervalSince(lastRequestTime)), // initializer for conditional binding must have Optional type, not 'TimeInterval' (aka 'Double')Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: TimeInterval = 0
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = Date().timeIntervalSince(Date(timeIntervalSince1970: lastRequestTime)) {
if lastRequestTime < timeInterval {
requestsMade += 1
return requestsMade <= maxRequests
} else {
requestsMade = 1
lastRequestTime = Date().timeIntervalSince1970
return true
}
} else {
requestsMade = 1
lastRequestTime = Date().timeIntervalSince1970
return true
}
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: TimeInterval = 0
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = Date().timeIntervalSince(Date(timeIntervalSince1970: lastRequestTime)) {
if lastRequestTime < timeInterval {
requestsMade += 1
return requestsMade <= maxRequests
} else {
requestsMade = 1
lastRequestTime = Date().timeIntervalSince1970
return true
}
} else {
requestsMade = 1
lastRequestTime = Date().timeIntervalSince1970
return true
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'if let lastRequestTime = Date().timeIntervalSince(Date(timeIntervalSince1970: lastRequestTime)) { // initializer for conditional binding must have Optional type, not 'TimeInterval' (aka 'Double')lastRequestTime = Date().timeIntervalSince1970 // cannot assign to value: 'lastRequestTime' is a 'let' constantThread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
requestsMade += 1
return requestsMade <= self.maxRequests
}
}
requestsMade = 1
self.lastRequestTime = Date()
return true
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
requestsMade += 1
return requestsMade <= self.maxRequests
}
}
requestsMade = 1
self.lastRequestTime = Date()
return true
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'let elapsedTime = Date().timeIntervalSince(lastRequestTime) { // initializer for conditional binding must have Optional type, not 'TimeInterval' (aka 'Double')Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
requestsMade += 1
return requestsMade <= self.maxRequests
}
}
requestsMade = 1
self.lastRequestTime = Date()
return true
}
}### Instruction:
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.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requestsMade: Int = 0
private var lastRequestTime: Date?
private var maxRequests: Int
private var timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = self.lastRequestTime,
let elapsedTime = Date().timeIntervalSince(lastRequestTime) {
if elapsedTime < self.timeInterval {
requestsMade += 1
return requestsMade <= self.maxRequests
}
}
requestsMade = 1
self.lastRequestTime = Date()
return true
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'let elapsedTime = Date().timeIntervalSince(lastRequestTime) { // initializer for conditional binding must have Optional type, not 'TimeInterval' (aka 'Double')Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: Date?
private var remainingRequests: Int
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.remainingRequests = maxRequests
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else { return true }
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
remainingRequests -= 1
return remainingRequests > 0
} else {
remainingRequests = maxRequests
self.lastRequestTime = Date()
return true
}
}
}### Instruction:
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.
### Response:
```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?
private var remainingRequests: Int
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.remainingRequests = maxRequests
self.lastRequestTime = Date()
}
func allowRequest() -> Bool {
guard let lastRequestTime = self.lastRequestTime else { return true }
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
remainingRequests -= 1
return remainingRequests > 0
} else {
remainingRequests = maxRequests
self.lastRequestTime = Date()
return true
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter = 0
init(value: Int) {
self.counter = value
}
func increment() {
self.counter += 1
}
func currentValue() -> Int {
return self.counter
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter = 0
init(value: Int) {
self.counter = value
}
func increment() {
self.counter += 1
}
func currentValue() -> Int {
return self.counter
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
private var lock = NSLock()
init(value: Int) {
self.counter = value
}
func increment() {
lock.lock()
counter += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = counter
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
private var lock = NSLock()
init(value: Int) {
self.counter = value
}
func increment() {
lock.lock()
counter += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = counter
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
init(value: Int) {
self.counter = value
}
func increment() {
self.counter += 1
}
func currentValue() -> Int {
return counter
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
init(value: Int) {
self.counter = value
}
func increment() {
self.counter += 1
}
func currentValue() -> Int {
return counter
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
private var lock = DispatchSemaphore(value: 1)
init(value: Int) {
self.counter = value
}
func increment() {
lock.acquire()
let newValue = counter + 1
counter = newValue
lock.release()
}
func currentValue() -> Int {
lock.acquire()
let value = counter
lock.release()
return value
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
private var lock = DispatchSemaphore(value: 1)
init(value: Int) {
self.counter = value
}
func increment() {
lock.acquire()
let newValue = counter + 1
counter = newValue
lock.release()
}
func currentValue() -> Int {
lock.acquire()
let value = counter
lock.release()
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'lock.acquire() // value of type 'DispatchSemaphore' has no member 'acquire'lock.release() // 'release()' is unavailable: not available in automatic reference counting modelock.acquire() // value of type 'DispatchSemaphore' has no member 'acquire'lock.release() // 'release()' is unavailable: not available in automatic reference counting modeprotocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
private var lock = NSLock()
init(value: Int) {
self.counter = value
}
func increment() {
lock.lock()
counter += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = counter
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var counter: Int
private var lock = NSLock()
init(value: Int) {
self.counter = value
}
func increment() {
lock.lock()
counter += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = counter
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
let newValue = self.value + 1
self.value = newValue
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
let newValue = self.value + 1
self.value = newValue
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}### Instruction:
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.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private var lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = self.value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}
```private var transforms: [@escaping (T) -> T] = [] // @escaping attribute may only be used in function parameter positionlet pipeline = Pipeline(value: transform(self.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> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}
```private var transforms: [@escaping (T) -> T] = [] // @escaping attribute may only be used in function parameter positionlet pipeline = Pipeline(value: transform(self.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> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}
```private var transforms: [@escaping (T) -> T] = [] // @escaping attribute may only be used in function parameter positionlet pipeline = Pipeline(value: transform(self.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> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}
```private var transforms: [@escaping (T) -> T] = [] // @escaping attribute may only be used in function parameter positionlet pipeline = Pipeline(value: transform(self.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> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}
```private var transforms: [@escaping (T) -> T] = [] // @escaping attribute may only be used in function parameter positionlet pipeline = Pipeline(value: transform(self.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> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> {
private var value: T
private var transforms: [@escaping (T) -> T] = []
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
let pipeline = Pipeline(value: transform(self.value))
self.transforms.append(transform)
return pipeline
}
func execute() -> T {
self.transforms.forEach { transform in
self.value = transform(self.value)
}
return self.value
}
}
// Usage
let pipeline = Pipeline(value: 1)
let result = pipeline.pipe { $0 * 2 }.pipe { $0 + 3 }.execute()
print(result) // Output: 8
```private var transforms: [@escaping (T) -> T] = [] // @escaping attribute may only be used in function parameter positionlet pipeline = Pipeline(value: transform(self.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> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value.execute()))
}
func execute() -> Pipeline<T.Output>.Output {
return self.value.execute()
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value.execute()))
}
func execute() -> Pipeline<T.Output>.Output {
return self.value.execute()
}
}
```return Pipeline(value: transform(self.value.execute())) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(self.value.execute())) // cannot convert value of type 'U' to expected argument type 'T'func execute() -> Pipeline<T.Output>.Output { // type 'T.Output' does not conform to protocol 'PipelineProtocol'let received = Pipeline(value: "Hello!") // generic class 'Pipeline' requires that 'String' conform to 'PipelineProtocol'.pipe { Double($0 * 2) } // instance method 'pipe' requires that 'Double' conform to 'PipelineProtocol'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: Pipeline(value: self.value, transform: transform))
}
func execute() -> T.Output {
return self.value.execute()
}
}
struct MyStruct: PipelineProtocol {
var value: String
init(value: String) {
self.value = value
}
func execute() -> String {
return self.value
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: Pipeline(value: self.value, transform: transform))
}
func execute() -> T.Output {
return self.value.execute()
}
}
// Usage
struct MyStruct: PipelineProtocol {
var value: String
init(value: String) {
self.value = value
}
func execute() -> String {
return self.value
}
}
let pipeline = Pipeline(value: MyStruct(value: "Hello, World!"))
let result = pipeline.pipe { $0.lowercased() }.pipe { $0.replacingOccurrences(of: "o", with: "a") }.execute()
print(result) // "hai, warld!"
```return Pipeline(value: Pipeline(value: self.value, transform: transform)) // cannot convert value of type 'Pipeline<T>' to expected argument type 'T'return Pipeline(value: Pipeline(value: self.value, transform: transform)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: Pipeline(value: self.value, transform: transform)) // extra argument 'transform' in callstruct MyStruct: PipelineProtocol { // type 'MyStruct' does not conform to protocol 'PipelineProtocol'let received = Pipeline(value: "Hello!") // generic class 'Pipeline' requires that 'String' conform to 'PipelineProtocol'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value.execute()))
}
func execute() -> Pipeline<T.Output>.Output {
return self.value.execute()
}
}
struct Person: PipelineProtocol {
let name: String
let age: Int
init(name: String, age: Int) {
self.name = name
self.age = age
}
func execute() -> String {
return "\(self.name), \(self.age)"
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value.execute()))
}
func execute() -> Pipeline<T.Output>.Output {
return self.value.execute()
}
}
// Usage
struct Person: PipelineProtocol {
let name: String
let age: Int
init(name: String, age: Int) {
self.name = name
self.age = age
}
func execute() -> String {
return "\(self.name), \(self.age)"
}
}
let pipeline = Pipeline(value: Person(name: "John", age: 30))
let result = pipeline.pipe { person in
Person(name: person.name, age: person.age * 2)
}.execute()
print(result) // "John, 60"
```return Pipeline(value: transform(self.value.execute())) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(self.value.execute())) // cannot convert value of type 'U' to expected argument type 'T'func execute() -> Pipeline<T.Output>.Output { // type 'T.Output' does not conform to protocol 'PipelineProtocol'struct Person: PipelineProtocol { // type 'Person' does not conform to protocol 'PipelineProtocol'let received = Pipeline(value: "Hello!") // generic class 'Pipeline' requires that 'String' conform to 'PipelineProtocol'.pipe { Double($0 * 2) } // instance method 'pipe' requires that 'Double' conform to 'PipelineProtocol'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value.execute()))
}
func execute() -> Pipeline<T.Output>.Output {
return self.value.execute()
}
}
struct Person: PipelineProtocol {
let name: String
let age: Int
init(name: String, age: Int) {
self.name = name
self.age = age
}
func execute() -> String {
return "\(self.name), \(self.age)"
}
}### Instruction:
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.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T> where T: PipelineProtocol {
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T.Output) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value.execute()))
}
func execute() -> Pipeline<T.Output>.Output {
return self.value.execute()
}
}
// Usage
struct Person: PipelineProtocol {
let name: String
let age: Int
init(name: String, age: Int) {
self.name = name
self.age = age
}
func execute() -> String {
return "\(self.name), \(self.age)"
}
}
let pipeline = Pipeline(value: Person(name: "John", age: 30))
let result = pipeline
.pipe { person in
Person(name: person.name, age: person.age + 1)
}
.execute()
print(result) // "John, 31"
```return Pipeline(value: transform(self.value.execute())) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'return Pipeline(value: transform(self.value.execute())) // cannot convert value of type 'U' to expected argument type 'T'func execute() -> Pipeline<T.Output>.Output { // type 'T.Output' does not conform to protocol 'PipelineProtocol'struct Person: PipelineProtocol { // type 'Person' does not conform to protocol 'PipelineProtocol'let received = Pipeline(value: "Hello!") // generic class 'Pipeline' requires that 'String' conform to 'PipelineProtocol'.pipe { Double($0 * 2) } // instance method 'pipe' requires that 'Double' conform to 'PipelineProtocol'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
observers.forEach { $0(newValue) }
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
observers.forEach { $0(newValue) }
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
for observer in observers {
observer(newValue)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
for observer in observers {
observer(newValue)
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'func subscribe(observer: @escaping (Value) -> Void) -> UUID { // instance method 'subscribe(observer:)' has different argument labels from those required by protocol 'ObservablePropertyProtocol' ('subscribe')func unsubscribe(observer: UUID) { // instance method 'unsubscribe(observer:)' has different argument labels from those required by protocol 'ObservablePropertyProtocol' ('unsubscribe')var value: Value { // invalid redeclaration of 'value'observable.unsubscribe(observer) // missing argument label 'observer:' in callprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for (uuid, _) in observers {
observers[uuid]!(newValue)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for (uuid, _) in observers {
observers[uuid]!(newValue)
}
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
observers.forEach { $0(newValue) }
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
observers.forEach { $0(newValue) }
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for (uuid, observer) in observers {
observer(newValue)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for (uuid, observer) in observers {
observer(newValue)
}
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
return self.value
}
func setValue(_ value: Value) {
self.value = value
for observer in observers.values {
observer(value)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
return self.value
}
func setValue(_ value: Value) {
self.value = value
for observer in observers.values {
observer(value)
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(self.value)
return self.value
}
private func didChangeValue(_ newValue: Value) {
observers.forEach { $0(newValue) }
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(self.value)
return self.value
}
private func didChangeValue(_ newValue: Value) {
observers.forEach { $0(newValue) }
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
for observer in observers {
observer(newValue)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [Observer] = []
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers.append(observer)
return uuid
}
func unsubscribe(observer: UUID) {
observers = observers.filter { $0.uuid != observer }
}
var value: Value {
didChangeValue(value)
return value
}
private func didChangeValue(_ newValue: Value) {
for observer in observers {
observer(newValue)
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'func subscribe(observer: @escaping (Value) -> Void) -> UUID { // instance method 'subscribe(observer:)' has different argument labels from those required by protocol 'ObservablePropertyProtocol' ('subscribe')func unsubscribe(observer: UUID) { // instance method 'unsubscribe(observer:)' has different argument labels from those required by protocol 'ObservablePropertyProtocol' ('unsubscribe')var value: Value { // invalid redeclaration of 'value'observable.unsubscribe(observer) // missing argument label 'observer:' in callprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```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 {
typealias Observer = @escaping (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get { return self.value }
set {
self.value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
}
```typealias Observer = @escaping (Value) -> Void // @escaping attribute may only be used in function parameter positionprivate var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable & ClampedProtocol> {
private var wrappedValue: T
private var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T {
get { return wrappedValue }
set {
if let lowerBound = range.lowerBound, let upperBound = range.upperBound {
if newValue < lowerBound {
wrappedValue = lowerBound
} else if newValue > upperBound {
wrappedValue = upperBound
} else {
wrappedValue = newValue
}
}
}
}
}
struct ClampedStruct: ClampedProtocol {
var wrappedValue: Int
var range: ClosedRange<Int>
init(wrappedValue: Int, range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable & ClampedProtocol> {
private var wrappedValue: T
private var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T {
get { return wrappedValue }
set {
if let lowerBound = range.lowerBound, let upperBound = range.upperBound {
if newValue < lowerBound {
wrappedValue = lowerBound
} else if newValue > upperBound {
wrappedValue = upperBound
} else {
wrappedValue = newValue
}
}
}
}
}
struct ClampedStruct: ClampedProtocol {
var wrappedValue: Int
var range: ClosedRange<Int>
init(wrappedValue: Int, range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
}
var myClampedInt = ClampedStruct(wrappedValue: 5, range: ClosedRange(lowerBound: 0, upperBound: 10))
myClampedInt.value = 15 // this will set myClampedInt.value to 10
myClampedInt.value = -5 // this will set myClampedInt.value to 0
myClampedInt.value = 5 // this will not change myClampedInt.value because it's within the range
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)if let lowerBound = range.lowerBound, let upperBound = range.upperBound { // initializer for conditional binding must have Optional type, not 'T'if let lowerBound = range.lowerBound, let upperBound = range.upperBound { // initializer for conditional binding must have Optional type, not 'T'struct ClampedStruct: ClampedProtocol { // type 'ClampedStruct' does not conform to protocol 'ClampedProtocol'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound {
wrappedValue = newValue
} else {
wrappedValue = range.lowerBound
}
}
}
struct ClampedInt: ClampedProtocol {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound {
wrappedValue = newValue
} else {
wrappedValue = range.lowerBound
}
}
}
struct ClampedInt: ClampedProtocol {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
}
var intClamped = ClampedInt(wrappedValue: 5, range: ClosedRange(lowerBound: 1, upperBound: 10))
intClamped.value = 15 // Output: 10
intClamped.value = 1 // Output: 10
intClamped.value = 11 // Output: 10
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)self.wrappedValue = wrappedValue // cannot assign value of type 'T' to type 'T.Value'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationif let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound { // cannot find 'newValue' in scopewrappedValue = newValue // cannot assign to property: 'self' is immutablewrappedValue = range.lowerBound // cannot assign to property: 'self' is immutableprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable & ClampedProtocol> {
private var wrappedValue: T
private var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T {
return wrappedValue
}
mutating func clamp(to range: ClosedRange<T>) {
if self.wrappedValue < range.lowerBound {
self.wrappedValue = range.lowerBound
} else if self.wrappedValue > range.upperBound {
self.wrappedValue = range.upperBound
}
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable & ClampedProtocol> {
private var wrappedValue: T
private var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T {
return wrappedValue
}
mutating func clamp(to range: ClosedRange<T>) {
if self.wrappedValue < range.lowerBound {
self.wrappedValue = range.lowerBound
} else if self.wrappedValue > range.upperBound {
self.wrappedValue = range.upperBound
}
self.range = range
}
}
// Usage
var x = Clamped(wrappedValue: 5, range: ClosedRange(lowerBound: 1, upperBound: 10))
x.clamp(to: ClosedRange(lowerBound: 2, upperBound: 8))
print(x.value) // Output: 5
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = new(for: setValue(value: newValue)) {
wrappedValue = newValue
}
}
private func new(for value: T.Value) -> T.Value? {
if value < range.lowerBound {
return range.lowerBound
} else if value > range.upperBound {
return range.upperBound
}
return value
}
}
extension Clamped where T: ClampedProtocol = Clamped<Int> {
static func clamp(value: Int, _ range: ClosedRange<Int>) -> Int {
return Clamped(wrappedValue: value, range: range).wrapped
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = new(for: setValue(value: newValue)) {
wrappedValue = newValue
}
}
private func new(for value: T.Value) -> T.Value? {
if value < range.lowerBound {
return range.lowerBound
} else if value > range.upperBound {
return range.upperBound
}
return value
}
}
extension Clamped where T: ClampedProtocol = Clamped<Int> {
static func clamp(value: Int, _ range: ClosedRange<Int>) -> Int {
return Clamped(wrappedValue: value, range: range).wrapped
}
}
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)self.wrappedValue = wrappedValue // cannot assign value of type 'T' to type 'T.Value'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationif let newValue = new(for: setValue(value: newValue)) { // cannot find 'setValue' in scopeif let newValue = new(for: setValue(value: newValue)) { // cannot find 'newValue' in scopewrappedValue = newValue // cannot assign to property: 'self' is immutableextension Clamped where T: ClampedProtocol = Clamped<Int> { // expected '{' in extensionprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T.Value {
return wrappedValue
}
mutating func wrap(_ newValue: T.Value) {
if newValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if newValue > range.upperBound {
wrappedValue = range.upperBound
} else {
wrappedValue = newValue
}
}
}
struct ClampedInt: ClampedProtocol, Comparable {
let wrappedValue: Int
let range: ClosedRange<Int>
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
static func < (lhs: ClampedInt, rhs: ClampedInt) -> Bool {
return lhs.wrappedValue < rhs.wrappedValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T.Value {
return wrappedValue
}
mutating func wrap(_ newValue: T.Value) {
if newValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if newValue > range.upperBound {
wrappedValue = range.upperBound
} else {
wrappedValue = newValue
}
}
}
struct ClampedInt: ClampedProtocol, Comparable {
let wrappedValue: Int
let range: ClosedRange<Int>
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
static func < (lhs: ClampedInt, rhs: ClampedInt) -> Bool {
return lhs.wrappedValue < rhs.wrappedValue
}
}
let clampedInt = ClampedInt(wrappedValue: 5, range: ClosedRange(lowerBound: 1, upperBound: 10))
clampedInt.wrap(15) // 10
clampedInt.wrap(100) // 10
clampedInt.wrap(-5) // 1
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)self.wrappedValue = wrappedValue // cannot assign value of type 'T' to type 'T.Value'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T.Value, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
set {
guard let newValue = newValue as? T.Value else {
fatalError("Invalid value")
}
if newValue < range.lowerBound {
self.wrappedValue = range.lowerBound
} else if newValue > range.upperBound {
self.wrappedValue = range.upperBound
} else {
self.wrappedValue = newValue
}
}
}
struct ClampedInt: ClampedProtocol, Comparable {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
static func < (lhs: ClampedInt, rhs: ClampedInt) -> Bool {
return lhs.value < rhs.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T.Value, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
set {
guard let newValue = newValue as? T.Value else {
fatalError("Invalid value")
}
if newValue < range.lowerBound {
self.wrappedValue = range.lowerBound
} else if newValue > range.upperBound {
self.wrappedValue = range.upperBound
} else {
self.wrappedValue = newValue
}
}
}
struct ClampedInt: ClampedProtocol, Comparable {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
static func < (lhs: ClampedInt, rhs: ClampedInt) -> Bool {
return lhs.value < rhs.value
}
}
let lowerBound = ClampedInt(wrappedValue: 0, range: ClosedRange(lowerBound: -10, upperBound: 10))
let upperBound = ClampedInt(wrappedValue: 100, range: ClosedRange(lowerBound: 0, upperBound: 100))
lowerBound.wrapped = 5
upperBound.wrapped = 200
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationguard let newValue = newValue as? T.Value else { // cannot find 'newValue' in scopeself.wrappedValue = range.lowerBound // cannot assign to property: 'self' is immutableself.wrappedValue = range.upperBound // cannot assign to property: 'self' is immutableself.wrappedValue = newValue // cannot assign to property: 'self' is immutableprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T.Value, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T.Value {
return wrappedValue
}
mutating func wrappedValue(for newValue: T.Value) {
if newValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if newValue > range.upperBound {
wrappedValue = range.upperBound
} else {
wrappedValue = newValue
}
}
}
struct ClampedStruct: ClampedProtocol {
var wrappedValue: Int
var range: ClosedRange<Int>
init(wrappedValue: Int, range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T.Value, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var value: T.Value {
return wrappedValue
}
mutating func wrappedValue(for newValue: T.Value) {
if newValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if newValue > range.upperBound {
wrappedValue = range.upperBound
} else {
wrappedValue = newValue
}
}
}
struct ClampedStruct: ClampedProtocol {
var wrappedValue: Int
var range: ClosedRange<Int>
init(wrappedValue: Int, range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
}
let clamped = ClampedStruct(wrappedValue: 5, range: ClosedRange(lowerBound: 1, upperBound: 10))
clamped.wrappedValue = 15 // This will be clamped to 10
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)struct ClampedStruct: ClampedProtocol { // type 'ClampedStruct' does not conform to protocol 'ClampedProtocol'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound {
wrappedValue = newValue
} else {
wrappedValue = range.lowerBound
}
}
}
struct ClampedInt: ClampedProtocol, Comparable {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
func compare(_ value: ClampedInt) -> ComparisonResult {
return self.value.compare(value.value)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound {
wrappedValue = newValue
} else {
wrappedValue = range.lowerBound
}
}
}
struct ClampedInt: ClampedProtocol, Comparable {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
func compare(_ value: ClampedInt) -> ComparisonResult {
return self.value.compare(value.value)
}
}
let clampedInt = Clamped(wrappedValue: ClampedInt(wrappedValue: 5, range: ClosedRange(lowerBound: 1, upperBound: 10)), range: ClosedRange(lowerBound: 1, upperBound: 10))
print(clampedInt.wrapped) // Output: 5
clampedInt.value = 15
print(clampedInt.wrapped) // Output: 10
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)self.wrappedValue = wrappedValue // cannot assign value of type 'T' to type 'T.Value'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationif let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound { // cannot find 'newValue' in scopewrappedValue = newValue // cannot assign to property: 'self' is immutablewrappedValue = range.lowerBound // cannot assign to property: 'self' is immutablestruct ClampedInt: ClampedProtocol, Comparable { // type 'ClampedInt' does not conform to protocol 'Comparable'return self.value.compare(value.value) // value of type 'Int' has no member 'compare'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound {
wrappedValue = newValue
} else {
wrappedValue = range.lowerBound
}
}
}
struct ClampedStruct: ClampedProtocol {
var wrappedValue: Int
var range: ClosedRange<Int>
init(wrappedValue: Int, range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
var value: T.Value {
return wrappedValue
}
set {
if let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound {
wrappedValue = newValue
} else {
wrappedValue = range.lowerBound
}
}
}
struct ClampedStruct: ClampedProtocol {
var wrappedValue: Int
var range: ClosedRange<Int>
init(wrappedValue: Int, range: ClosedRange<Int>) {
self.wrappedValue = wrappedValue
self.range = range
}
}
let clamped = ClampedStruct(wrappedValue: 5, range: ClosedRange(lowerBound: 0, upperBound: 10))
print(clamped.value) // prints: 5
clamped.value = 15
print(clamped.value) // prints: 10
clamped.value = -5
print(clamped.value) // prints: 0
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)self.wrappedValue = wrappedValue // cannot assign value of type 'T' to type 'T.Value'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationif let newValue = newValue as? T.Value, newValue >= range.lowerBound && newValue <= range.upperBound { // cannot find 'newValue' in scopewrappedValue = newValue // cannot assign to property: 'self' is immutablewrappedValue = range.lowerBound // cannot assign to property: 'self' is immutablestruct ClampedStruct: ClampedProtocol { // type 'ClampedStruct' does not conform to protocol 'ClampedProtocol'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T.Value, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
set {
if let newValue = newValue, newValue < range.lowerBound {
self.wrappedValue = range.lowerBound
} else if let newValue = newValue, newValue > range.upperBound {
self.wrappedValue = range.upperBound
} else {
self.wrappedValue = newValue ?? range.lowerBound
}
}
}
struct ClampedInt: ClampedProtocol {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: ClampedProtocol> {
private var wrappedValue: T.Value
private var range: ClosedRange<T.Value>
init(wrappedValue: T.Value, _ range: ClosedRange<T.Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var wrapped: T.Value {
return wrappedValue
}
set {
if let newValue = newValue, newValue < range.lowerBound {
self.wrappedValue = range.lowerBound
} else if let newValue = newValue, newValue > range.upperBound {
self.wrappedValue = range.upperBound
} else {
self.wrappedValue = newValue ?? range.lowerBound
}
}
}
struct ClampedInt: ClampedProtocol {
let value: Int
init(wrappedValue: Int, _ range: ClosedRange<Int>) {
self.value = wrappedValue
}
}
var clampedInt = ClampedInt(wrappedValue: 5, range: ClosedRange(lowerBound: 1, upperBound: 10))
print(clampedInt.wrapped) // Output: 5
clampedInt.wrapped = 15
print(clampedInt.wrapped) // Output: 10
clampedInt.wrapped = 0
print(clampedInt.wrapped) // Output: 1
```private var wrappedValue: T.Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Clamped' (which is internal)set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationif let newValue = newValue, newValue < range.lowerBound { // cannot find 'newValue' in scopeself.wrappedValue = range.lowerBound // cannot assign to property: 'self' is immutable} else if let newValue = newValue, newValue > range.upperBound { // cannot find 'newValue' in scopeself.wrappedValue = range.upperBound // cannot assign to property: 'self' is immutableself.wrappedValue = newValue ?? range.lowerBound // cannot find 'newValue' in scopeself.wrappedValue = newValue ?? range.lowerBound // 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> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, wrappedValue)
wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, wrappedValue)
wrappedValue = newValue
}
}
// Usage
var x = Logged(wrappedValue: 42, logger: { (event, value) in
print("Event: \(event), Value: \(value)")
})
x.value // prints "Event: get, Value: 42"
x = 100 // prints "Event: set, Value: 42"
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionlogger(.get, wrappedValue) // cannot infer contextual base in reference to member 'get'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationlogger(.set, wrappedValue) // cannot infer contextual base in reference to member 'set'wrappedValue = newValue // cannot find 'newValue' in scopewrappedValue = 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> {
private var wrappedValue: T
private var logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}
// Usage
var x = 5
var y: Int? = nil
@Logged(wrappedValue: x, logger: { (event, value) in
print("\(event == .get ? "get" : "set"): \(value)")
})
var a = x
@Logged(wrappedValue: y!, logger: { (event, value) in
print("\(event == .get ? "get" : "set"): \(value)")
})
var b = y!
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationself.wrappedValue = newValue // cannot find 'newValue' in scopeself.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> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedProperty: T {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedProperty: T {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Usage
var x = Logged(wrappedValue: 10, logger: { (event, value) in
print("Event: \(event.rawValue), Value: \(value)")
})
x.wrappedProperty = 20
print(x.wrappedProperty) // prints "Event: set, Value: 20"
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionlogger(.get, wrappedValue) // cannot infer contextual base in reference to member 'get'logger(.set, newValue) // cannot infer contextual base in reference to member 'set'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}
// Usage
var x = Logged(wrappedValue: 10, logger: { (event, value) in
print("Event: \(event), Value: \(value)")
})
x.value // prints "Event: get, Value: 10"
x = 20 // prints "Event: set, Value: 10"
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionself.logger(.get, self.wrappedValue) // cannot infer contextual base in reference to member 'get'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationself.logger(.set, self.wrappedValue) // cannot infer contextual base in reference to member 'set'self.wrappedValue = newValue // cannot assign to property: 'self' is immutableself.wrappedValue = newValue // cannot find 'newValue' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}
// Usage
var x = Logged(wrappedValue: 10, logger: { (event, value) in
print("Event: \(event)")
print("Value: \(value)")
})
x.value
x = 20
x.value
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionself.logger(.get, self.wrappedValue) // cannot infer contextual base in reference to member 'get'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationself.logger(.set, self.wrappedValue) // cannot infer contextual base in reference to member 'set'self.wrappedValue = newValue // cannot assign to property: 'self' is immutableself.wrappedValue = newValue // cannot find 'newValue' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}
// Usage
var x = Logged(wrappedValue: 10, logger: { (event, value) in
print("Event: \(event), Value: \(value)")
})
x.value // prints "Event: get, Value: 10"
x = 20 // prints "Event: set, Value: 10"
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionself.logger(.get, self.wrappedValue) // cannot infer contextual base in reference to member 'get'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationself.logger(.set, self.wrappedValue) // cannot infer contextual base in reference to member 'set'self.wrappedValue = newValue // cannot assign to property: 'self' is immutableself.wrappedValue = newValue // cannot find 'newValue' in scopeenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}
// Usage
var x = Logged(wrappedValue: 10, logger: { (event, value) in
print("Event: \(event), Value: \(value)")
})
x = 20
print(x) // Output: Event: set, Value: 20
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationself.wrappedValue = newValue // cannot find 'newValue' in scopeself.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> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, wrappedValue)
wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, wrappedValue)
wrappedValue = newValue
}
}
// Usage
var x = 10
var y = x
var logger: @escaping (Event, Int) -> Void = { _, value in
print("\(String(describing: value)) was accessed")
}
@Logged(wrappedValue: x, logger: logger)
var x: Int
x = 20
y = x
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionlogger(.get, wrappedValue) // cannot infer contextual base in reference to member 'get'set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationlogger(.set, wrappedValue) // cannot infer contextual base in reference to member 'set'wrappedValue = newValue // cannot find 'newValue' in scopewrappedValue = 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> {
private var wrappedValue: T
private var logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var value: T {
self.logger(.get, self.wrappedValue)
return self.wrappedValue
}
set {
self.logger(.set, self.wrappedValue)
self.wrappedValue = newValue
}
}
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)set { // expected '(' in argument list of function declarationset { // expected 'func' keyword in instance method declarationself.wrappedValue = newValue // cannot find 'newValue' in scopeself.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> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedProperty: T {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T> {
private var wrappedValue: T
private var logger: @escaping (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedProperty: T {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
logger(.set, newValue)
wrappedValue = newValue
}
}
}
// Usage
var x = Logged<Int>(wrappedValue: 0, logger: { (event, value) in
print("Event: \(event), Value: \(value)")
})
x.wrappedProperty = 5
print(x.wrappedProperty) // prints "Event: set, Value: 5"
```private var wrappedValue: T // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Logged' (which is internal)private var logger: @escaping (Event, T) -> Void // @escaping attribute may only be used in function parameter positionlogger(.get, wrappedValue) // cannot infer contextual base in reference to member 'get'logger(.set, newValue) // cannot infer contextual base in reference to member 'set'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'let application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')let application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')let application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'let application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}### Instruction:
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.
### Response:
```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
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'let application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')let application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return .success(city: "", forecast: "")
case .searchButtonPress:
// Handle search button press action
return .success(city: "", forecast: "")
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return .success(city: "", forecast: "")
case .searchButtonPress:
// Handle search button press action
return .success(city: "", forecast: "")
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'let application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
case .keyboardDeleteBackwards:
return .failure(city: "London")
case .searchButtonPress:
return .failure(city: "London")
}
}
}### Instruction:
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.
### Response:
```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
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
case .keyboardDeleteBackwards:
return .failure(city: "London")
case .searchButtonPress:
return .failure(city: "London")
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')let application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}### Instruction:
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.
### Response:
```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
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "London")
return .success(city: "London", forecast: forecast)
} catch {
return .failure(city: "London")
}
case .keyboardDeleteBackwards:
// Handle delete backwards action
return nil
case .searchButtonPress:
// Handle search button press action
return nil
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'let application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}### Instruction:
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.
### Response:
```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 var provider: WeatherProvider
init(dependencies: WeatherApplicationDependencies) {
self.provider = dependencies.provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
do {
let forecast = try provider.forecast(for: "New York")
return .success(city: "New York", forecast: forecast)
} catch {
return .failure(city: "New York")
}
case .keyboardDeleteBackwards:
return .success(city: "", forecast: "")
case .searchButtonPress:
return .success(city: "", forecast: "")
}
}
}
```class WeatherApplication: WeatherApplicationProtocol { // type 'WeatherApplication' does not conform to protocol 'WeatherApplicationDependencies'self.provider = dependencies.provider // value of type 'any WeatherApplicationDependencies' has no member 'provider'case .keyboardCharacterSelect(let character): // immutable value 'character' was never used; consider replacing with '_' or removing itlet application = WeatherApplication(provider: provider) // incorrect argument label in call (have 'provider:', expected 'dependencies:')let application = WeatherApplication(provider: provider) // argument type 'WeatherProviderImplementation' does not conform to expected type 'WeatherApplicationDependencies'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("K"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("y"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("i"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("v"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // cannot infer contextual base in reference to member 'searchButtonPress'XCTAssertEqual(application.handle(action: .searchButtonPress), .success(city: "Kyiv", forecast: "+28")) // type 'Equatable' has no member 'success'(0..<4).forEach { _ in _ = application.handle(action: .keyboardDeleteBackwards) } // Clear search input // cannot infer contextual base in reference to member 'keyboardDeleteBackwards'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("W"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("s"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("a"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertNil(application.handle(action: .keyboardCharacterSelect("w"))) // cannot infer contextual base in reference to member 'keyboardCharacterSelect'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // type 'Equatable' has no member 'failure'XCTAssertEqual(application.handle(action: .searchButtonPress), .failure(city: "Wsaw")) // cannot infer contextual base in reference to member 'searchButtonPress'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double = 0
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self._balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self._balance < amount {
return false
}
self._balance -= amount
return true
}
func balance() -> Double {
return self._balance
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double = 0
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self._balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self._balance < amount {
return false
}
self._balance -= amount
return true
}
func balance() -> Double {
return self._balance
}
}
```actor BankAccount: BankAccountProtocol { // type 'BankAccount' does not conform to protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typelet balance = await account.balance // actor-isolated instance method 'balance()' can not be partially appliedlet balance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(balance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?let finalBalance = await account.balance // actor-isolated instance method 'balance()' can not be partially appliedlet finalBalance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(finalBalance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Current balance: \(await self.balance)")
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Current balance: \(await self.balance)")
}
}
```private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeprint("Current balance: \(await self.balance)") // no 'async' operations occur within 'await' expressionprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double = 0
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() async -> Double {
return _balance
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double = 0
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() async -> Double {
return _balance
}
}
```actor BankAccount: BankAccountProtocol { // type 'BankAccount' does not conform to protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typelet balance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(balance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?let finalBalance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(finalBalance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() -> Double {
return _balance
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() -> Double {
return _balance
}
}
```actor BankAccount: BankAccountProtocol { // type 'BankAccount' does not conform to protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typelet balance = await account.balance // actor-isolated instance method 'balance()' can not be partially appliedlet balance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(balance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?let finalBalance = await account.balance // actor-isolated instance method 'balance()' can not be partially appliedlet finalBalance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(finalBalance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double = 0.0
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self._balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self._balance >= amount {
self._balance -= amount
return true
}
return false
}
func balance() async throws -> Double {
return self._balance
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double = 0.0
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self._balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self._balance >= amount {
self._balance -= amount
return true
}
return false
}
func balance() async throws -> Double {
return self._balance
}
}
```actor BankAccount: BankAccountProtocol { // type 'BankAccount' does not conform to protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typelet balance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(balance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?let finalBalance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(finalBalance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Balance: \(await self.balance)")
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Balance: \(await self.balance)")
}
}
```private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeprint("Balance: \(await self.balance)") // no 'async' operations occur within 'await' expressionprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() async throws -> Double {
return _balance
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() async throws -> Double {
return _balance
}
}
```actor BankAccount: BankAccountProtocol { // type 'BankAccount' does not conform to protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typelet balance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(balance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?let finalBalance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(finalBalance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Balance: \(await self.balance)")
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Balance: \(await self.balance)")
}
}
```private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeprint("Balance: \(await self.balance)") // no 'async' operations occur within 'await' expressionprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() async throws -> Double {
return _balance
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var _balance: Double
init(balance: Double) {
self._balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
_balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if _balance >= amount {
_balance -= amount
return true
}
return false
}
func balance() async throws -> Double {
return _balance
}
}
```actor BankAccount: BankAccountProtocol { // type 'BankAccount' does not conform to protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typelet balance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(balance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?let finalBalance = await account.balance // no 'async' operations occur within 'await' expressionXCTAssertEqual(finalBalance, 1000.0) // function produces expected type 'Double'; did you mean to call it with '()'?protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Current balance: \(await self.balance)")
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double = 0.0
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
await Thread.sleep(for: .seconds(1))
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
await Thread.sleep(for: .seconds(1))
if self.balance >= amount {
self.balance -= amount
return true
}
return false
}
func getBalance() async {
print("Current balance: \(await self.balance)")
}
}
```private var balance: Double = 0.0 // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'await Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeawait Thread.sleep(for: .seconds(1)) // no exact matches in call to class method 'sleep'await Thread.sleep(for: .seconds(1)) // reference to member 'seconds' cannot be resolved without a contextual typeprint("Current balance: \(await self.balance)") // no 'async' operations occur within 'await' expressionprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
get {
if !cached || !condition() {
cached = false
self.wrappedValue = wrappedValue()
}
return self.wrappedValue
}
}
private var cached: Bool = false
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
get {
if !cached || !condition() {
cached = false
self.wrappedValue = wrappedValue()
}
return self.wrappedValue
}
}
private var cached: Bool = false
}
```struct Cached<Value>: CachedProperty { // type 'Cached<Value>' does not conform to protocol 'CachedProperty'cached = false // cannot assign to property: 'self' is immutableself.wrappedValue = wrappedValue() // cannot call value of non-function type 'Value'self.wrappedValue = wrappedValue() // cannot assign to property: 'self' is immutable@Cached(condition: { condition }) // 'Cached<Value>' initializer is inaccessible due to 'private' protection levelprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var value: Value {
if let computedValue = computedValue, condition() {
return computedValue
} else {
self.computedValue = self.wrappedValue
return self.wrappedValue
}
}
}
struct Test {
var x: Int
var y: Int
var cachedX: Cached<Int>
var cachedY: Cached<Int>
init(x: Int, y: Int) {
self.x = x
self.y = y
self.cachedX = Cached(wrappedValue: { self.x }, condition: { self.y != 0 })
self.cachedY = Cached(wrappedValue: { self.y }, condition: { self.x != 0 })
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var value: Value {
if let computedValue = computedValue, condition() {
return computedValue
} else {
self.computedValue = self.wrappedValue
return self.wrappedValue
}
}
}
struct Test {
var x: Int
var y: Int
var cachedX: Cached<Int>
var cachedY: Cached<Int>
init(x: Int, y: Int) {
self.x = x
self.y = y
self.cachedX = Cached(wrappedValue: { self.x }, condition: { self.y != 0 })
self.cachedY = Cached(wrappedValue: { self.y }, condition: { self.x != 0 })
}
}
```private var wrappedValue: Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Cached' (which is internal)if let computedValue = computedValue, condition() { // initializer for conditional binding must have Optional type, not 'Value'self.computedValue = self.wrappedValue // cannot assign to property: 'self' is immutableself.cachedX = Cached(wrappedValue: { self.x }, condition: { self.y != 0 }) // add () to forward @autoclosure parameterself.cachedY = Cached(wrappedValue: { self.y }, condition: { self.x != 0 }) // add () to forward @autoclosure parameterprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var wrappedValue: Value {
didSet {
if condition() {
computedValue = wrappedValue
}
}
}
var value: Value {
didSet {
if condition() {
computedValue = value
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var wrappedValue: Value {
didSet {
if condition() {
computedValue = wrappedValue
}
}
}
var value: Value {
didSet {
if condition() {
computedValue = value
}
}
}
}
```struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'computedValue = wrappedValue // ambiguous use of 'wrappedValue'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
didSet {
if condition() {
cachedValue = wrappedValue()
}
}
}
var cachedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
self.cachedValue = wrappedValue()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
didSet {
if condition() {
cachedValue = wrappedValue()
}
}
}
var cachedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
self.cachedValue = wrappedValue()
}
}
```cachedValue = wrappedValue() // cannot call value of non-function type 'Value'self.wrappedValue = wrappedValue // function produces expected type 'Value'; did you mean to call it with '()'?protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
didSet {
if condition() {
wrappedValue = computeValue()
}
}
}
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
private func computeValue() -> Value {
return wrappedValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
didSet {
if condition() {
wrappedValue = computeValue()
}
}
}
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
private func computeValue() -> Value {
return wrappedValue
}
}
```} // return from initializer without initializing all stored propertiesprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var value: Value {
get { computedValue }
set { computedValue = newValue }
}
mutating func update() {
if condition() {
self.computedValue = wrappedValue()
}
}
}
struct Test {
var x: Int
var y: Int
var sum: Cached<Int> {
get { return x + y }
set {
if x + y != newValue {
x = newValue / 2
y = newValue / 2
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var value: Value {
get { computedValue }
set { computedValue = newValue }
}
mutating func update() {
if condition() {
self.computedValue = wrappedValue()
}
}
}
struct Test {
var x: Int
var y: Int
var sum: Cached<Int> {
get { return x + y }
set {
if x + y != newValue {
x = newValue / 2
y = newValue / 2
}
}
}
}
let test = Test(x: 5, y: 10)
print(test.sum) // prints 15
test.x = 10
print(test.sum) // prints 10
```private var wrappedValue: Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Cached' (which is internal)init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) { // initializer 'init(_:_:)' has different argument labels from those required by protocol 'CachedProperty' ('init(wrappedValue:condition:)')self.computedValue = wrappedValue() // cannot call value of non-function type 'Value'get { return x + y } // cannot convert return expression of type 'Int' to return type 'Cached<Int>'if x + y != newValue { // operator function '!=' requires that 'Cached<Int>' conform to 'BinaryInteger'x = newValue / 2 // cannot convert value of type 'Cached<Int>' to expected argument type 'Int'y = newValue / 2 // cannot convert value of type 'Cached<Int>' to expected argument type 'Int'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
didSet {
if !condition() {
wrappedValue = computeValue()
}
}
}
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
private func computeValue() -> Value {
return wrappedValue
}
}
struct Test {
var x: Cached<Int>
init() {
self.x = Cached(wrappedValue: { Int.random(in: 0...100) }, condition: { self.x.value != 50 })
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
var wrappedValue: Value
var condition: () -> Bool
var value: Value {
didSet {
if !condition() {
wrappedValue = computeValue()
}
}
}
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
}
private func computeValue() -> Value {
return wrappedValue
}
}
struct Test {
var x: Cached<Int>
init() {
self.x = Cached(wrappedValue: { Int.random(in: 0...100) }, condition: { self.x.value != 50 })
}
}
let test = Test()
```self.x = Cached(wrappedValue: { Int.random(in: 0...100) }, condition: { self.x.value != 50 }) // add () to forward @autoclosure parameterprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value
private var condition: () -> Bool
private var computedValue: Value
init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) {
self.value = wrappedValue()
self.condition = condition
self.computedValue = self.value
}
var wrappedValue: Value {
self.value
}
mutating func updateValue() {
if self.condition() {
self.computedValue = self.value
}
}
}
struct MyStruct {
var myValue: String
var myCondition: Bool
init(myValue: String, myCondition: Bool) {
self.myValue = myValue
self.myCondition = myCondition
}
var cachedMyValue: Cached<String> {
Cached(wrappedValue: { self.myValue }, condition: { self.myCondition })
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value
private var condition: () -> Bool
private var computedValue: Value
init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) {
self.value = wrappedValue()
self.condition = condition
self.computedValue = self.value
}
var wrappedValue: Value {
self.value
}
mutating func updateValue() {
if self.condition() {
self.computedValue = self.value
}
}
}
struct MyStruct {
var myValue: String
var myCondition: Bool
init(myValue: String, myCondition: Bool) {
self.myValue = myValue
self.myCondition = myCondition
}
var cachedMyValue: Cached<String> {
Cached(wrappedValue: { self.myValue }, condition: { self.myCondition })
}
}
```init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) { // initializer 'init(_:_:)' has different argument labels from those required by protocol 'CachedProperty' ('init(wrappedValue:condition:)')Cached(wrappedValue: { self.myValue }, condition: { self.myCondition }) // extraneous argument labels 'wrappedValue:condition:' in callCached(wrappedValue: { self.myValue }, condition: { self.myCondition }) // add () to forward @autoclosure parameter@Cached(condition: { condition }) // extraneous argument labels 'wrappedValue:condition:' in callprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var value: Value {
if let condition = condition() {
if condition != lastCondition {
computedValue = wrappedValue()
lastCondition = condition
}
}
return computedValue
}
private var lastCondition: Bool = true
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: Value
private var condition: () -> Bool
private var computedValue: Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue()
self.condition = condition
self.computedValue = wrappedValue()
}
var value: Value {
if let condition = condition() {
if condition != lastCondition {
computedValue = wrappedValue()
lastCondition = condition
}
}
return computedValue
}
private var lastCondition: Bool = true
}
```private var wrappedValue: Value // private property 'wrappedValue' cannot have more restrictive access than its enclosing property wrapper type 'Cached' (which is internal)if let condition = condition() { // initializer for conditional binding must have Optional type, not 'Bool'computedValue = wrappedValue() // cannot call value of non-function type 'Value'computedValue = wrappedValue() // cannot assign to property: 'self' is immutablelastCondition = condition // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: @autoclosure @escaping () -> Value
private var condition: @escaping () -> Bool
private var computedValue: Value
init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
self.computedValue = wrappedValue()
}
var wrappedValue: Value {
get { computedValue }
set { computedValue = newValue }
}
var newValue: Value {
if condition() {
computedValue = wrappedValue()
}
return computedValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that caches the computed value of a property and recomputes it only when a specified condition changes.
### Response:
```swift
protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var wrappedValue: @autoclosure @escaping () -> Value
private var condition: @escaping () -> Bool
private var computedValue: Value
init(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
self.computedValue = wrappedValue()
}
var wrappedValue: Value {
get { computedValue }
set { computedValue = newValue }
}
var newValue: Value {
if condition() {
computedValue = wrappedValue()
}
return computedValue
}
}
```struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'private var wrappedValue: @autoclosure @escaping () -> Value // '@autoclosure' may only be used on parametersprivate var condition: @escaping () -> Bool // @escaping attribute may only be used in function parameter positioninit(_ wrappedValue: @autoclosure @escaping () -> Value, _ condition: @escaping () -> Bool) { // initializer 'init(_:_:)' has different argument labels from those required by protocol 'CachedProperty' ('init(wrappedValue:condition:)')self.wrappedValue = wrappedValue // function produces expected type 'Value'; did you mean to call it with '()'?computedValue = wrappedValue() // cannot call value of non-function type 'Value'computedValue = wrappedValue() // cannot assign to property: 'self' is immutableinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: (Int -> Int), g: (Int -> Int)) -> (Int -> Int) {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: (Int -> Int), g: (Int -> Int)) -> (Int -> Int) {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: (Int -> Int), g: (Int -> Int)) -> (Int -> Int) { // single argument function types require parenthesesfunc >>><(f: (Int -> Int), g: (Int -> Int)) -> (Int -> Int) { // single argument function types require parenthesesfunc >>><(f: (Int -> Int), g: (Int -> Int)) -> (Int -> Int) { // operator implementation without matching operator declarationfunc >>><(f: (Int -> Int), g: (Int -> Int)) -> (Int -> Int) { // single argument function types require parentheseslet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity right
precedence 100
}
func >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double {
return { x in f(g(x)) }
}
```associativity right // expected colon after attribute name in precedence groupprecedence 100 // 'precedence' is not a valid precedence group attributefunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // operator implementation without matching operator declarationfunc >>><(f: @escaping (Double) -> Double, g: @escaping (Double) -> Double) -> @escaping (Double) -> Double { // @escaping attribute may only be used in function parameter positionlet composedFunction = doubleDescription >>> stringCount // cannot find operator '>>>' in scopeimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher.finalDigest
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher.finalDigest
}
```guard let data = inputStream.readData(ofSize: bufferSize) else { // value of type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}
```guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else { // type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}
```guard let data = inputStream.readData(ofSize: bufferSize) else { // value of type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, size: bufferSize) else {
return nil
}
let hash = try SHA256.hash(of: data)
return SHA256Digest(data: data, hash: hash)
}
struct SHA256Digest {
let data: Data
let hash: Data
init(data: Data, hash: Data) {
self.data = data
self.hash = hash
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, size: bufferSize) else {
return nil
}
let hash = try SHA256.hash(of: data)
return SHA256Digest(data: data, hash: hash)
}
struct SHA256Digest {
let data: Data
let hash: Data
init(data: Data, hash: Data) {
self.data = data
self.hash = hash
}
}
```guard let data = try? InputStream.readData(of: inputStream, size: bufferSize) else { // type 'InputStream' has no member 'readData'let hash = try SHA256.hash(of: data) // incorrect argument label in call (have 'of:', expected 'data:')XCTAssertEqual(hash, expectedHash) // cannot convert value of type 'SHA256Digest?' to expected argument type 'SHA256.Digest' (aka 'SHA256Digest')import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}
```guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else { // type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? inputStream.readData(ofSize: bufferSize) else { return nil }
return try SHA256.hash(of: data)
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? inputStream.readData(ofSize: bufferSize) else { return nil }
return try SHA256.hash(of: data)
}
```guard let data = try? inputStream.readData(ofSize: bufferSize) else { return nil } // value of type 'InputStream' has no member 'readData'return try SHA256.hash(of: data) // incorrect argument label in call (have 'of:', expected 'data:')import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}
```guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else { // type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}
```guard let data = inputStream.readData(ofSize: bufferSize) else { // value of type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else {
return nil
}
let hasher = SHA256Digest()
hasher.update(data)
return hasher
}
```guard let data = try? InputStream.readData(of: inputStream, ofLength: bufferSize) else { // type 'InputStream' has no member 'readData'let hasher = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256()
hasher.update(data)
return hasher.finalDigest
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard let data = inputStream.readData(ofSize: bufferSize) else {
return nil
}
let hasher = SHA256()
hasher.update(data)
return hasher.finalDigest
}
```guard let data = inputStream.readData(ofSize: bufferSize) else { // value of type 'InputStream' has no member 'readData'hasher.update(data) // missing argument label 'bufferPointer:' in callhasher.update(data) // cannot use mutating member on immutable value: 'hasher' is a 'let' constantreturn hasher.finalDigest // value of type 'SHA256' has no member 'finalDigest'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let array = Array(tuple16)
let data = Data(array: array)
self = String(data: data, encoding: .utf8) ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let array = Array(tuple16)
let data = Data(array: array)
self = String(data: data, encoding: .utf8) ?? ""
}
}
```let array = Array(tuple16) // no exact matches in call to initializerlet data = Data(array: array) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let data = Data(bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let data = Data(bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}
```let bytes = Array(tuple16) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let values = Array(tuple16)
let string = String(utf8: &values, count: values.count)
self = string ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let values = Array(tuple16)
let string = String(utf8: &values, count: values.count)
self = string ?? ""
}
}
```let values = Array(tuple16) // no exact matches in call to initializerlet string = String(utf8: &values, count: values.count) // incorrect argument label in call (have 'utf8:count:', expected 'utf16CodeUnits:count:')typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let data = Data(bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let data = Data(bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}
```let bytes = Array(tuple16) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let str = String(bytes.map { String($0, radix: 10) }.joined(separator: ""))
self = str
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let str = String(bytes.map { String($0, radix: 10) }.joined(separator: ""))
self = str
}
}
```let bytes = Array(tuple16) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let str = String(bytes.map { String($0, radix: 10) }.joined(separator: ""))
self = str
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let str = String(bytes.map { String($0, radix: 10) }.joined(separator: ""))
self = str
}
}
```let bytes = Array(tuple16) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let str = String(format: "(%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d)",
tuple16.0, tuple16.1, tuple16.2, tuple16.3, tuple16.4, tuple16.5, tuple16.6, tuple16.7, tuple16.8, tuple16.9, tuple16.10, tuple16.11, tuple16.12, tuple16.13, tuple16.14, tuple16.15)
self.init(str)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let str = String(format: "(%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d)",
tuple16.0, tuple16.1, tuple16.2, tuple16.3, tuple16.4, tuple16.5, tuple16.6, tuple16.7, tuple16.8, tuple16.9, tuple16.10, tuple16.11, tuple16.12, tuple16.13, tuple16.14, tuple16.15)
self.init(str)
}
}
// Example usage:
let str = String(tuple16: (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15))
print(str) // Output: "(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)"
``` // XCTAssertEqual failed: ((72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33, 0, 0, 0)) is not equal to (Hello, World!)typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let data = Data(bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = Array(tuple16)
let data = Data(bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}
```let bytes = Array(tuple16) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let str = String(tuple16.0) + String(tuple16.1) + String(tuple16.2) + String(tuple16.3) + String(tuple16.4) + String(tuple16.5) + String(tuple16.6) + String(tuple16.7) + String(tuple16.8) + String(tuple16.9) + String(tuple16.10) + String(tuple16.11) + String(tuple16.12) + String(tuple16.13) + String(tuple16.14) + String(tuple16.15)
self.init(str)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let str = String(tuple16.0) + String(tuple16.1) + String(tuple16.2) + String(tuple16.3) + String(tuple16.4) + String(tuple16.5) + String(tuple16.6) + String(tuple16.7) + String(tuple16.8) + String(tuple16.9) + String(tuple16.10) + String(tuple16.11) + String(tuple16.12) + String(tuple16.13) + String(tuple16.14) + String(tuple16.15)
self.init(str)
}
}
``` // XCTAssertEqual failed: (7210110810811144328711111410810033000) is not equal to (Hello, World!)typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let str = String(format: "(%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d)",
tuple16.0, tuple16.1, tuple16.2, tuple16.3, tuple16.4, tuple16.5, tuple16.6, tuple16.7, tuple16.8, tuple16.9, tuple16.10, tuple16.11, tuple16.12, tuple16.13, tuple16.14, tuple16.15)
self.init(str)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let str = String(format: "(%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d)",
tuple16.0, tuple16.1, tuple16.2, tuple16.3, tuple16.4, tuple16.5, tuple16.6, tuple16.7, tuple16.8, tuple16.9, tuple16.10, tuple16.11, tuple16.12, tuple16.13, tuple16.14, tuple16.15)
self.init(str)
}
}
``` // XCTAssertEqual failed: ((72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33, 0, 0, 0)) is not equal to (Hello, World!)import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.getBytes(from: rhs.videoFrameBuffer) == nil // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameMetadata'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameMetadata == rhs.videoFrameMetadata // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameMetadata'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
if lhs.size != rhs.size {
return false
}
if lhs.pixelFormatType != rhs.pixelFormatType {
return false
}
if lhs.videoPixelFormatType != rhs.videoPixelFormatType {
return false
}
if lhs.dataLength != rhs.dataLength {
return false
}
return true
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
if lhs.size != rhs.size {
return false
}
if lhs.pixelFormatType != rhs.pixelFormatType {
return false
}
if lhs.videoPixelFormatType != rhs.videoPixelFormatType {
return false
}
if lhs.dataLength != rhs.dataLength {
return false
}
return true
}
```if lhs.size != rhs.size { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'if lhs.size != rhs.size { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'if lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'if lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'if lhs.videoPixelFormatType != rhs.videoPixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoPixelFormatType'if lhs.videoPixelFormatType != rhs.videoPixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoPixelFormatType'if lhs.dataLength != rhs.dataLength { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'dataLength'if lhs.dataLength != rhs.dataLength { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'dataLength'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
if lhs.size != rhs.size {
return false
}
if lhs.formatDescription != rhs.formatDescription {
return false
}
if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) {
return false
}
return true
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
if lhs.size != rhs.size {
return false
}
if lhs.formatDescription != rhs.formatDescription {
return false
}
if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) {
return false
}
return true
}
```if lhs.size != rhs.size { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'if lhs.size != rhs.size { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'if lhs.formatDescription != rhs.formatDescription { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'if lhs.formatDescription != rhs.formatDescription { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'getBytes'if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) { // cannot infer contextual base in reference to member 'none'if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'allocatedByteCount'if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'allocatedByteCount'if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) { // cannot infer contextual base in reference to member 'none'if lhs.getBytes(from: 0, length: lhs.allocatedByteCount, options: .none) != rhs.getBytes(from: 0, length: rhs.allocatedByteCount, options: .none) { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'getBytes'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom operator which provides comparison for two CVPixelBuffer objects and returns true if two pixel buffers equal in size, pixel format, and content.
### Response:
```swift
import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data
}
```return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'videoFrameBuffer'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'formatDescription'return lhs.size == rhs.size && lhs.formatDescription == rhs.formatDescription && lhs.videoFrameBuffer.data == rhs.videoFrameBuffer.data // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'size'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
```publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
```publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result = [PublicItem]()
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result = [PublicItem]()
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}
```result.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.map { item in
PublicItem(value: item.value)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.map { item in
PublicItem(value: item.value)
}
}
```PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
```publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.map { item in
PublicItem(value: item.value)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.map { item in
PublicItem(value: item.value)
}
}
```PublicItem(value: item.value) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var publicItems = [PublicItem]()
for item in items {
publicItems.append(PublicItem(value: item.value))
}
return publicItems
}
```publicItems.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result = [PublicItem]()
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result = [PublicItem]()
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}
```result.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result: [PublicItem] = []
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result: [PublicItem] = []
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}
```result.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result: [PublicItem] = []
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
var result: [PublicItem] = []
for item in items {
result.append(PublicItem(value: item.value))
}
return result
}
```result.append(PublicItem(value: item.value)) // 'value' is inaccessible due to 'private' protection levelenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
if lhsParts.count < rhsParts.count {
return .orderedAscending
} else if lhsParts.count > rhsParts.count {
return .orderedDescending
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
if lhsParts.count < rhsParts.count {
return .orderedAscending
} else if lhsParts.count > rhsParts.count {
return .orderedDescending
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Split the strings into components
let lhsComponents = lhs.split(separator: ".").map { Int(String($0))! }
let rhsComponents = rhs.split(separator: ".").map { Int(String($0))! }
// Compare each component
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if lhsComponent < rhsComponent {
return .orderedDescending
} else if lhsComponent > rhsComponent {
return .orderedAscending
}
}
// If all components are equal, the versions are equal
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
// Split the strings into components
let lhsComponents = lhs.split(separator: ".").map { Int(String($0))! }
let rhsComponents = rhs.split(separator: ".").map { Int(String($0))! }
// Compare each component
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if lhsComponent < rhsComponent {
return .orderedDescending
} else if lhsComponent > rhsComponent {
return .orderedAscending
}
}
// If all components are equal, the versions are equal
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedDescending
}
if lhsPart > rhsPart {
return .orderedAscending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedDescending
}
if lhsPart > rhsPart {
return .orderedAscending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedDescending
} else if lhsPart > rhsPart {
return .orderedAscending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedDescending
} else if lhsPart > rhsPart {
return .orderedAscending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedAscending
} else if lhsPart > rhsPart {
return .orderedDescending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsArray = lhs.split(separator: ".").map { Int(String($0))! }
let rhsArray = rhs.split(separator: ".").map { Int(String($0))! }
for (l, r) in zip(lhsArray, rhsArray) {
if l < r {
return .orderedDescending
} else if l > r {
return .orderedAscending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsArray = lhs.split(separator: ".").map { Int(String($0))! }
let rhsArray = rhs.split(separator: ".").map { Int(String($0))! }
for (l, r) in zip(lhsArray, rhsArray) {
if l < r {
return .orderedDescending
} else if l > r {
return .orderedAscending
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedDescending
}
if lhsPart > rhsPart {
return .orderedAscending
}
}
return .orderedSame
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that compares two version number strings (created with respect of semantic versioning specification including "alpha" and "beta" tags) and returning their ordering as a value of type ComparisonResult.
### Response:
```swift
enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsParts = lhs.split(separator: ".").map { Int(String($0))! }
let rhsParts = rhs.split(separator: ".").map { Int(String($0))! }
for (lhsPart, rhsPart) in zip(lhsParts, rhsParts) {
if lhsPart < rhsPart {
return .orderedDescending
}
if lhsPart > rhsPart {
return .orderedAscending
}
}
return .orderedSame
}
``` // XCTAssertTrue failed