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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as? JSON ?? [:]
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as? JSON ?? [:]
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} 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 {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
return try JSONSerialization.jsonObject(with: data, options: []) as! JSON
} catch {
throw ParsingError.internalError(error)
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### 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, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
```enum CalculateError: Error {
case invalidInput
}### 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 operators: [String] = []
var currentNumber: Double = 0
var currentOperator: String = ""
var isNumber = false
var isOperator = false
var isOpenBracket = false
var isCloseBracket = false
var isComma = false
var isOperatorFound = false
var isNumberFound = false
var isOpenBracketFound = false
var isCloseBracketFound = false
var isCommaFound = false
var isOperatorFoundInStack = false
var isNumberFoundInStack = false
var isOpenBracketFoundInStack = false
var isCloseBracketFoundInStack = false
var isCommaFoundInStack = false
var isOperatorFoundInOperators = false
var isNumberFoundInOperators = false
var isOpenBracketFoundInOperators = false
var isCloseBracketFoundInOperators = false
var isCommaFoundInOperators = false
var isOperatorFoundInOperatorsStack = false
var isNumberFoundInOperatorsStack = false
var isOpenBracketFoundInOperatorsStack = false
var isCloseBracketFoundInOperatorsStack = false
var isCommaFoundInOperatorsStack = false
var isOperatorFoundInOperatorsStack2 = false
var isNumberFoundInOperatorsStack2 = false
var isOpenBracketFoundInOperatorsStack2 = false
var isCloseBracketFoundInOperatorsStack2 = false
var isCommaFoundInOperatorsStack2 = false
var isOperatorFoundInOperatorsStack3 = false
var isNumberFoundInOperatorsStack3 = false
var isOpenBracketFoundInOperatorsStack3 = false
var isCloseBracketFoundInOperatorsStack3 = false
var isCommaFoundInOperatorsStack3 = false
var isOperatorFoundInOperatorsStack4 = false
var isNumberFoundInOperatorsStack4 = false
var isOpenBracketFoundInOperatorsStack4 = false
var isCloseBracketFoundInOperatorsStack4 = false
var isCommaFoundInOperatorsStack4 = false
var isOperatorFoundInOperatorsStack5 = false
var isNumberFoundInOperatorsStack5 = false
var isOpenBracketFoundInOperatorsStack5 = false
var isCloseBracketFoundInOperatorsStack5 = false
var isCommaFoundInOperatorsStack5 = false
var isOperatorFoundInOperatorsStack6 = false
var isNumberFoundInOperatorsStack6 = false
var isOpenBracketFoundInOperatorsStack6 = false
var isCloseBracketFoundInOperatorsStack6 = false
var isCommaFoundInOperatorsStack6 = false
var isOperatorFoundInOperatorsStack7 = false
var isNumberFoundInOperatorsStack7 = false
var isOpenBracketFoundInOperatorsStack7 = false
var isCloseBracketFoundInOperatorsStack7 = false
var isCommaFoundInOperatorsStack7 = false
var isOperatorFoundInOperatorsStack8 = false
var isNumberFoundInOperatorsStack8 = false
var isOpenBracketFoundInOperatorsStack8 = false
var isCloseBracketFoundInOperatorsStack8 = false
var isCommaFoundInOperatorsStack8 = false
var isOperatorFoundInOperatorsStack9 = false
var isNumberFoundInOperatorsStack9 = false
var isOpenBracketFoundInOperatorsStack9 = false
var isCloseBracketFoundInOperatorsStack9 = false
var isCommaFoundInOperatorsStack9 = false
var isOperatorFoundInOperatorsStack10 = false
var isNumberFoundInOperatorsStack10 = false
var isOpenBracketFoundInOperatorsStack10 = false
var isCloseBracketFoundInOperatorsStack10 = false
var isCommaFoundInOperatorsStack10 = false
var isOperatorFoundInOperatorsStack11 = false
var isNumberFoundInOperatorsStack11 = false
var isOpenBracketFoundInOperatorsStack11 = false
var isCloseBracketFoundInOperatorsStack11 = false
var isCommaFoundInOperatorsStack11 = false
var isOperatorFoundInOperatorsXCTAssertEqual(try calculate("2+2"), 4.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("2+2*2"), 6.0) // cannot find 'calculate' in scopeXCTAssertEqual(try calculate("(2+2)*2"), 8.0) // cannot find 'calculate' in scopeXCTAssertThrowsError(try calculate("A/B")) // cannot find 'calculate' in scopeenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var index = 0
let tokens = string.components(separatedBy: "+-*/()")
while index < tokens.count {
let token = tokens[index]
if let number = Double(token) {
stack.append(number)
} else if token == "(" {
index += 1
let number = try calculate(string[index...])
stack.append(number)
index += number.description.count
} else if token == ")" {
return stack.removeLast()
} else {
let a = stack.removeLast()
let b = stack.removeLast()
switch token {
case "+":
stack.append(a + b)
case "-":
stack.append(b - a)
case "*":
stack.append(a * b)
case "/":
stack.append(b / a)
default:
throw CalculateError.invalidInput
}
}
index += 1
}
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
let tokens = string.components(separatedBy: "+-*/()")
while index < tokens.count {
let token = tokens[index]
if let number = Double(token) {
stack.append(number)
} else if token == "(" {
index += 1
let number = try calculate(string[index...])
stack.append(number)
index += number.description.count
} else if token == ")" {
return stack.removeLast()
} else {
let a = stack.removeLast()
let b = stack.removeLast()
switch token {
case "+":
stack.append(a + b)
case "-":
stack.append(b - a)
case "*":
stack.append(a * b)
case "/":
stack.append(b / a)
default:
throw CalculateError.invalidInput
}
}
index += 1
}
return stack.removeLast()
}
```let number = try calculate(string[index...]) // 'subscript(_:)' is unavailable: cannot subscript String with an integer range, use a String.Index range instead.enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.split(separator: " ")
var stack = [Double]()
for token in tokens {
switch token {
case "+":
stack.append(stack.removeLast() + stack.removeLast())
case "-":
let b = stack.removeLast()
stack.append(stack.removeLast() - b)
case "*":
stack.append(stack.removeLast() * stack.removeLast())
case "/":
let b = stack.removeLast()
stack.append(stack.removeLast() / b)
case "(":
stack.append(0)
case ")":
let b = stack.removeLast()
stack.append(b)
default:
if let number = Double(String(token)) {
stack.append(number)
} 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 {
let tokens = string.split(separator: " ")
var stack = [Double]()
for token in tokens {
switch token {
case "+":
stack.append(stack.removeLast() + stack.removeLast())
case "-":
let b = stack.removeLast()
stack.append(stack.removeLast() - b)
case "*":
stack.append(stack.removeLast() * stack.removeLast())
case "/":
let b = stack.removeLast()
stack.append(stack.removeLast() / b)
case "(":
stack.append(0)
case ")":
let b = stack.removeLast()
stack.append(b)
default:
if let number = Double(String(token)) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
}
}
return stack.removeLast()
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var tokens = [String]()
var stack = [Double]()
var index = 0
var token = ""
var number = 0.0
var operator = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
if char.isNumber {
token += String(char)
} else if char == "." {
token += String(char)
} else if char.isWhitespace {
if !token.isEmpty {
tokens.append(token)
token = ""
}
} else if char == "(" {
stack.append(number)
number = 0.0
tokens.append(String(char))
} else if char == ")" {
number = stack.removeLast()
tokens.append(String(char))
} else if char == "+" || char == "-" || char == "*" || char == "/" {
if !token.isEmpty {
tokens.append(token)
token = ""
}
tokens.append(String(char))
} else {
throw CalculateError.invalidInput
}
index += 1
}
if !token.isEmpty {
tokens.append(token)
}
while !stack.isEmpty {
number = stack.removeLast()
operator = tokens.removeLast()
if operator == "+" {
number += number
} else if operator == "-" {
number -= number
} else if operator == "*" {
number *= number
} else if operator == "/" {
number /= number
}
stack.append(number)
}
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 tokens = [String]()
var stack = [Double]()
var index = 0
var token = ""
var number = 0.0
var operator = ""
while index < string.count {
let char = string[string.index(string.startIndex, offsetBy: index)]
if char.isNumber {
token += String(char)
} else if char == "." {
token += String(char)
} else if char.isWhitespace {
if !token.isEmpty {
tokens.append(token)
token = ""
}
} else if char == "(" {
stack.append(number)
number = 0.0
tokens.append(String(char))
} else if char == ")" {
number = stack.removeLast()
tokens.append(String(char))
} else if char == "+" || char == "-" || char == "*" || char == "/" {
if !token.isEmpty {
tokens.append(token)
token = ""
}
tokens.append(String(char))
} else {
throw CalculateError.invalidInput
}
index += 1
}
if !token.isEmpty {
tokens.append(token)
}
while !stack.isEmpty {
number = stack.removeLast()
operator = tokens.removeLast()
if operator == "+" {
number += number
} else if operator == "-" {
number -= number
} else if operator == "*" {
number *= number
} else if operator == "/" {
number /= number
}
stack.append(number)
}
return stack.removeLast()
}
```var operator = "" // keyword 'operator' cannot be used as an identifier hereoperator = tokens.removeLast() // 'operator' may only be declared at file scopeoperator = tokens.removeLast() // operator must be declared as 'prefix', 'postfix', or 'infix'if operator == "+" { // expected expression, var, or let in 'if' conditionif operator == "+" { // 'operator' may only be declared at file scopeif operator == "+" { // operator must be declared as 'prefix', 'postfix', or 'infix'} else if operator == "-" { // 'operator' may only be declared at file scope} else if operator == "-" { // operator must be declared as 'prefix', 'postfix', or 'infix'} else if operator == "-" { // expected expression, var, or let in 'if' condition} else if operator == "*" { // expected expression, var, or let in 'if' condition} else if operator == "*" { // operator must be declared as 'prefix', 'postfix', or 'infix'} else if operator == "*" { // 'operator' may only be declared at file scope} else if operator == "/" { // operator must be declared as 'prefix', 'postfix', or 'infix'} else if operator == "/" { // expected expression, var, or let in 'if' condition} else if operator == "/" { // 'operator' may only be declared at file scopeenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.components(separatedBy: "+-*/()")
var stack = [Double]()
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if token == "+" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a + b)
} else if token == "-" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a - b)
} else if token == "*" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
} else if token == "/" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
} else if token == "(" {
stack.append(0)
} else if token == ")" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a + b)
} 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 {
let tokens = string.components(separatedBy: "+-*/()")
var stack = [Double]()
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if token == "+" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a + b)
} else if token == "-" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a - b)
} else if token == "*" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a * b)
} else if token == "/" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a / b)
} else if token == "(" {
stack.append(0)
} else if token == ")" {
let b = stack.removeLast()
let a = stack.removeLast()
stack.append(a + b)
} else {
throw CalculateError.invalidInput
}
}
return stack.removeLast()
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var tokens: [String] = []
var stack: [Double] = []
var index = 0
var token: String?
while index < string.count {
token = nil
switch string[index] {
case "+", "-", "*", "/", "(":
token = String(string[index])
default:
break
}
if let token = token {
tokens.append(token)
}
index += 1
}
for token in tokens {
switch token {
case "+":
stack.append(stack.removeLast() + stack.removeLast())
case "-":
stack.append(stack.removeLast() - stack.removeLast())
case "*":
stack.append(stack.removeLast() * stack.removeLast())
case "/":
stack.append(stack.removeLast() / stack.removeLast())
case "(":
stack.append(stack.removeLast())
case ")":
stack.append(stack.removeLast())
default:
break
}
}
if stack.count == 1 {
return stack.first!
} else {
throw CalculateError.invalidInput
}
}### 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 tokens: [String] = []
var stack: [Double] = []
var index = 0
var token: String?
while index < string.count {
token = nil
switch string[index] {
case "+", "-", "*", "/", "(":
token = String(string[index])
default:
break
}
if let token = token {
tokens.append(token)
}
index += 1
}
for token in tokens {
switch token {
case "+":
stack.append(stack.removeLast() + stack.removeLast())
case "-":
stack.append(stack.removeLast() - stack.removeLast())
case "*":
stack.append(stack.removeLast() * stack.removeLast())
case "/":
stack.append(stack.removeLast() / stack.removeLast())
case "(":
stack.append(stack.removeLast())
case ")":
stack.append(stack.removeLast())
default:
break
}
}
if stack.count == 1 {
return stack.first!
} else {
throw CalculateError.invalidInput
}
}
```switch string[index] { // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.token = String(string[index]) // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var operators = [String]()
var currentNumber: Double?
var currentOperator: String?
for char in string {
switch char {
case "+", "-", "*", "/":
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
currentOperator = String(char)
case "(":
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
currentOperator = nil
case ")":
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
currentOperator = nil
case "0", "1", "2", "3", "4", "5", "6", "7", "8", "9":
if currentNumber == nil {
currentNumber = Double(String(char))
} else {
currentNumber = currentNumber! * 10 + Double(String(char))
}
default:
break
}
}
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
while !operators.isEmpty {
let operator = operators.removeLast()
let number = stack.removeLast()
switch operator {
case "+":
stack.append(number + stack.removeLast())
case "-":
stack.append(stack.removeLast() - number)
case "*":
stack.append(number * stack.removeLast())
case "/":
stack.append(stack.removeLast() / number)
default:
break
}
}
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 operators = [String]()
var currentNumber: Double?
var currentOperator: String?
for char in string {
switch char {
case "+", "-", "*", "/":
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
currentOperator = String(char)
case "(":
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
currentOperator = nil
case ")":
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
currentOperator = nil
case "0", "1", "2", "3", "4", "5", "6", "7", "8", "9":
if currentNumber == nil {
currentNumber = Double(String(char))
} else {
currentNumber = currentNumber! * 10 + Double(String(char))
}
default:
break
}
}
if currentNumber == nil {
throw CalculateError.invalidInput
}
if currentOperator != nil {
operators.append(currentOperator!)
}
while !operators.isEmpty {
let operator = operators.removeLast()
let number = stack.removeLast()
switch operator {
case "+":
stack.append(number + stack.removeLast())
case "-":
stack.append(stack.removeLast() - number)
case "*":
stack.append(number * stack.removeLast())
case "/":
stack.append(stack.removeLast() / number)
default:
break
}
}
return stack.removeLast()
}
```currentNumber = currentNumber! * 10 + Double(String(char)) // value of optional type 'Double?' must be unwrapped to a value of type 'Double'let operator = operators.removeLast() // keyword 'operator' cannot be used as an identifier hereswitch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var index = 0
while index < string.count {
let character = string[index]
switch character {
case "+", "-", "*", "/":
guard !stack.isEmpty else { throw CalculateError.invalidInput }
let right = stack.removeLast()
let left = stack.removeLast()
switch character {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else { throw CalculateError.invalidInput }
stack.append(left / right)
default:
break
}
case "(":
stack.append(0)
case ")":
guard !stack.isEmpty else { throw CalculateError.invalidInput }
stack.removeLast()
default:
guard let number = Double(String(character)) else { throw CalculateError.invalidInput }
stack.append(number)
}
index += 1
}
guard stack.count == 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[index]
switch character {
case "+", "-", "*", "/":
guard !stack.isEmpty else { throw CalculateError.invalidInput }
let right = stack.removeLast()
let left = stack.removeLast()
switch character {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else { throw CalculateError.invalidInput }
stack.append(left / right)
default:
break
}
case "(":
stack.append(0)
case ")":
guard !stack.isEmpty else { throw CalculateError.invalidInput }
stack.removeLast()
default:
guard let number = Double(String(character)) else { throw CalculateError.invalidInput }
stack.append(number)
}
index += 1
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.removeLast()
}
```let character = string[index] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var result: Double = 0
var stack: [Double] = []
var tokens: [String] = []
var index = 0
for char in string {
if char.isNumber {
let token = String(char)
tokens.append(token)
} else if char == "." {
let token = String(char)
tokens.append(token)
} else if char == "(" {
stack.append(result)
result = 0
} else if char == ")" {
result = stack.removeLast()
} else if char == "+" || char == "-" || char == "*" || char == "/" {
let token = String(char)
tokens.append(token)
}
}
for token in tokens {
if token == "+" {
result += stack.removeLast()
} else if token == "-" {
result -= stack.removeLast()
} else if token == "*" {
result *= stack.removeLast()
} else if token == "/" {
result /= stack.removeLast()
} else if token == "(" {
stack.append(result)
result = 0
} else if token == ")" {
result = stack.removeLast()
} else {
result = Double(token) ?? 0
}
}
if stack.count > 0 {
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 result: Double = 0
var stack: [Double] = []
var tokens: [String] = []
var index = 0
for char in string {
if char.isNumber {
let token = String(char)
tokens.append(token)
} else if char == "." {
let token = String(char)
tokens.append(token)
} else if char == "(" {
stack.append(result)
result = 0
} else if char == ")" {
result = stack.removeLast()
} else if char == "+" || char == "-" || char == "*" || char == "/" {
let token = String(char)
tokens.append(token)
}
}
for token in tokens {
if token == "+" {
result += stack.removeLast()
} else if token == "-" {
result -= stack.removeLast()
} else if token == "*" {
result *= stack.removeLast()
} else if token == "/" {
result /= stack.removeLast()
} else if token == "(" {
stack.append(result)
result = 0
} else if token == ")" {
result = stack.removeLast()
} else {
result = Double(token) ?? 0
}
}
if stack.count > 0 {
throw CalculateError.invalidInput
}
return result
}
```var index = 0 // initialization of variable 'index' was never used; consider replacing with assignment to '_' or removing it // Fatal error: Can't remove last element from an empty collectionenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack = [Double]()
var index = string.startIndex
while index < string.endIndex {
let token = string[index]
switch token {
case "+", "-", "*", "/":
let op1 = stack.removeLast()
let op2 = stack.removeLast()
switch token {
case "+":
stack.append(op1 + op2)
case "-":
stack.append(op2 - op1)
case "*":
stack.append(op1 * op2)
case "/":
stack.append(op2 / op1)
default:
throw CalculateError.invalidInput
}
case "(":
stack.append(0)
case ")":
stack.removeLast()
default:
let number = Double(String(token)) ?? 0
stack.append(number)
}
index = string.index(after: index)
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.last ?? 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 = string.startIndex
while index < string.endIndex {
let token = string[index]
switch token {
case "+", "-", "*", "/":
let op1 = stack.removeLast()
let op2 = stack.removeLast()
switch token {
case "+":
stack.append(op1 + op2)
case "-":
stack.append(op2 - op1)
case "*":
stack.append(op1 * op2)
case "/":
stack.append(op2 / op1)
default:
throw CalculateError.invalidInput
}
case "(":
stack.append(0)
case ")":
stack.removeLast()
default:
let number = Double(String(token)) ?? 0
stack.append(number)
}
index = string.index(after: index)
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.last ?? 0
}
``` // Fatal error: Can't remove last element from an empty collectionfunc execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}### 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
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}
```return (output, "") // cannot convert return expression of type '(String?, String)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}### 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
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}
```return (output, "") // cannot convert return expression of type '(String?, String)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}### 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
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}
```return (output, "") // cannot convert return expression of type '(String?, String)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, output)
}### 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
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, output)
}
```return (output, output) // cannot convert return expression of type '(String?, String?)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}### 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
let pipe = Pipe()
task.standardOutput = pipe
task.standardError = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8)
return (output, "")
}
```return (output, "") // cannot convert return expression of type '(String?, String)' to return type '(String, String)'func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
return (String(data: stdoutData, encoding: .utf8)!, String(data: stderrData, encoding: .utf8)!)
}### 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
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
return (String(data: stdoutData, encoding: .utf8)!, String(data: stderrData, encoding: .utf8)!)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: stdoutData, encoding: .utf8)!, String(data: stderrData, encoding: .utf8)!)
}### 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
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: stdoutData, encoding: .utf8)!, String(data: stderrData, encoding: .utf8)!)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: outdata, encoding: .utf8)!, String(data: errdata, encoding: .utf8)!)
}### 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
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: outdata, encoding: .utf8)!, String(data: errdata, encoding: .utf8)!)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: outdata, encoding: .utf8)!, String(data: errdata, encoding: .utf8)!)
}### 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
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: outdata, encoding: .utf8)!, String(data: errdata, encoding: .utf8)!)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: stdoutData, encoding: .utf8)!, String(data: stderrData, encoding: .utf8)!)
}### 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
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
task.launch()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
return (String(data: stdoutData, encoding: .utf8)!, String(data: stderrData, encoding: .utf8)!)
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}### 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 { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = 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 { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}### 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 value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}### 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 value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}### 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 { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}### 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 value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}### 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 value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}### 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 value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}### 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 { (arg: T) -> U in
if let result = cache[arg] {
return result
} else {
let result = function(arg)
cache[arg] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { key in
if let value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}### 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 value = cache[key] {
return value
} else {
let value = function(key)
cache[key] = value
return value
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}### 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 {
var currentAttempt = 0
while currentAttempt < attempts {
do {
return try task()
} catch {
currentAttempt += 1
}
}
throw error
}
```throw error // thrown expression type '(String) -> ()' does not conform to 'Error'throw error // expansion of macro 'error' requires leading '#'protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else {
return nil
}
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else {
return nil
}
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else {
return nil
}
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else {
return nil
}
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
return factories[ObjectIdentifier(type)]?() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
return factories[ObjectIdentifier(type)]?() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
return factories[ObjectIdentifier(type)]?() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
return factories[ObjectIdentifier(type)]?() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}### 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 factories: [ObjectIdentifier: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories[ObjectIdentifier(type)] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
guard let factory = factories[ObjectIdentifier(type)] else { return nil }
return factory() as? T
}
}
```protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State: Hashable, Event: Hashable>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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 {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
let machine = StateMachine<String, String>(state: "A")
machine.registerTransition(from: "A", to: "B", event: "a")
machine.registerTransition(from: "B", to: "A", event: "b")
machine.trigger(event: "a")
print(machine.state) // "B"
machine.trigger(event: "b")
print(machine.state) // "A"
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<State, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [Transition]
init(state: State) {
self.state = state
self.transitions = []
}
func trigger(event: Event) {
guard let transition = transitions.first(where: { $0.event == event }) else { return }
state = transition.to
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append(Transition(from: from, to: to, event: event))
}
}
struct Transition {
let from: State
let to: State
let event: 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [Transition]
init(state: State) {
self.state = state
self.transitions = []
}
func trigger(event: Event) {
guard let transition = transitions.first(where: { $0.event == event }) else { return }
state = transition.to
}
func registerTransition(from: State, to: State, event: Event) {
transitions.append(Transition(from: from, to: to, event: event))
}
}
struct Transition {
let from: State
let to: State
let event: Event
}
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'let from: State // cannot find type 'State' in scopelet to: State // cannot find type 'State' in scopelet event: Event // cannot find type 'Event' in scopeXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
let machine = StateMachine(state: "A")
machine.registerTransition(from: "A", to: "B", event: "next")
machine.trigger(event: "next")
print(machine.state) // B
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
let machine = StateMachine(state: "A")
machine.registerTransition(from: "A", to: "B", event: "next")
machine.trigger(event: "next")
print(machine.state) // B
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let nextState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let nextState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let nextState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let nextState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
print("No transition for event: \(event) in state: \(state)")
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
print("No transition for event: \(event) in state: \(state)")
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
let machine = StateMachine(state: "A")
machine.registerTransition(from: "A", to: "B", event: "next")
machine.trigger(event: "next")
print(machine.state) // B
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
print("No transition for event \(event) in state \(state)")
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let newState = transitions[state]?[event] else {
print("No transition for event \(event) in state \(state)")
return
}
state = newState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
let machine = StateMachine(state: "A")
machine.registerTransition(from: "A", to: "B", event: "go")
machine.trigger(event: "go")
print(machine.state) // B
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let newState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelprotocol 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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, Event>: StateMachineProtocol {
private var state: State
private var transitions: [State: [Event: State]] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else {
return
}
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
let machine = StateMachine(state: "A")
machine.registerTransition(from: "A", to: "B", event: "event")
machine.trigger(event: "event")
print(machine.state) // B
```class StateMachine<State, Event>: StateMachineProtocol { // type 'StateMachine<State, Event>' does not conform to protocol 'StateMachineProtocol'private var transitions: [State: [Event: State]] = [:] // type 'State' does not conform to protocol 'Hashable'private var transitions: [State: [Event: State]] = [:] // type 'Event' does not conform to protocol 'Hashable'guard let nextState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'State' conform to 'Hashable'guard let nextState = transitions[state]?[event] else { // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:)' on 'Dictionary' requires that 'Event' conform to 'Hashable'transitions[from, default: [:]][event] = to // referencing subscript 'subscript(_:default:)' on 'Dictionary' requires that 'State' conform to 'Hashable'XCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .yellow) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .red) // 'state' is inaccessible due to 'private' protection levelXCTAssertEqual(stateMachine.state, .green) // 'state' is inaccessible due to 'private' protection levelindirect 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
extension Array where Element == FileSystemNode {
var fileSystemInfo: FileSystemInfo {
return FileSystemNode.fileSystemInfo(from: self)
}
}
extension FileSystemNode {
static func fileSystemInfo(from nodes: [FileSystemNode]) -> FileSystemInfo {
return nodes.reduce(FileSystemInfoImpl()) { $0.merge(with: $1) }
}
}
struct FileSystemInfoImpl: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
mutating func merge(with other: FileSystemNode) {
switch other {
case .file(_, let size):
totalSize += size
filesCount += 1
case .directory(_, let contents):
totalSize += contents.reduce(0) { $0 + $1.totalSize }
filesCount += contents.reduce(0) { $0 + $1.filesCount }
treeDepth = max(treeDepth, 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth })
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
extension Array where Element == FileSystemNode {
var fileSystemInfo: FileSystemInfo {
return FileSystemNode.fileSystemInfo(from: self)
}
}
extension FileSystemNode {
static func fileSystemInfo(from nodes: [FileSystemNode]) -> FileSystemInfo {
return nodes.reduce(FileSystemInfoImpl()) { $0.merge(with: $1) }
}
}
struct FileSystemInfoImpl: FileSystemInfo {
var totalSize: Int = 0
var filesCount: Int = 0
var treeDepth: Int = 0
mutating func merge(with other: FileSystemNode) {
switch other {
case .file(_, let size):
totalSize += size
filesCount += 1
case .directory(_, let contents):
totalSize += contents.reduce(0) { $0 + $1.totalSize }
filesCount += contents.reduce(0) { $0 + $1.filesCount }
treeDepth = max(treeDepth, 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth })
}
}
}
```return nodes.reduce(FileSystemInfoImpl()) { $0.merge(with: $1) } // cannot convert value of type '()' to closure result type 'FileSystemInfoImpl'return nodes.reduce(FileSystemInfoImpl()) { $0.merge(with: $1) } // cannot use mutating member on immutable value: '$0' is immutableindirect 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
``` // XCTAssertEqual failed: (3) is not equal to (4)indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.max(by: { $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 0
case .directory(_, let contents):
return 1 + contents.max(by: { $0.treeDepth < $1.treeDepth })?.treeDepth ?? 0
}
}
}
```return 1 + contents.max(by: { $0.treeDepth < $1.treeDepth })?.treeDepth ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
``` // XCTAssertEqual failed: (3) is not equal to (4)indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
extension Array where Element == FileSystemNode {
func calculateInfo() -> FileSystemInfo {
return FileSystemInfoImpl(totalSize: reduce(0) { $0 + $1.totalSize },
filesCount: reduce(0) { $0 + $1.filesCount },
treeDepth: reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth })
}
}
struct FileSystemInfoImpl: FileSystemInfo {
let totalSize: Int
let filesCount: Int
let treeDepth: Int
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
extension Array where Element == FileSystemNode {
func calculateInfo() -> FileSystemInfo {
return FileSystemInfoImpl(totalSize: reduce(0) { $0 + $1.totalSize },
filesCount: reduce(0) { $0 + $1.filesCount },
treeDepth: reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth })
}
}
struct FileSystemInfoImpl: FileSystemInfo {
let totalSize: Int
let filesCount: Int
let treeDepth: Int
}
``` // XCTAssertEqual failed: (3) is not equal to (4)indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.max(by: { $0.treeDepth < $1.treeDepth })?.treeDepth ?? 0
}
}
}
extension Array where Element == FileSystemNode {
func calculate() -> FileSystemInfo {
return FileSystemInfo(totalSize: reduce(0) { $0 + $1.totalSize },
filesCount: reduce(0) { $0 + $1.filesCount },
treeDepth: reduce(0) { $0 + $1.treeDepth })
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.max(by: { $0.treeDepth < $1.treeDepth })?.treeDepth ?? 0
}
}
}
extension Array where Element == FileSystemNode {
func calculate() -> FileSystemInfo {
return FileSystemInfo(totalSize: reduce(0) { $0 + $1.totalSize },
filesCount: reduce(0) { $0 + $1.filesCount },
treeDepth: reduce(0) { $0 + $1.treeDepth })
}
}
```return 1 + contents.max(by: { $0.treeDepth < $1.treeDepth })?.treeDepth ?? 0 // value of optional type 'Int?' must be unwrapped to a value of type 'Int'return FileSystemInfo(totalSize: reduce(0) { $0 + $1.totalSize }, // 'any FileSystemInfo' cannot be constructed because it has no accessible initializersindirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
``` // XCTAssertEqual failed: (3) is not equal to (4)indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
``` // XCTAssertEqual failed: (3) is not equal to (4)indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
``` // XCTAssertEqual failed: (3) is not equal to (4)indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(_, let size):
return size
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}### 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 0
case .directory(_, let contents):
return 1 + contents.reduce(0) { $0 > $1.treeDepth ? $0 : $1.treeDepth }
}
}
}
``` // XCTAssertEqual failed: (3) is not equal to (4)protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var items: [T] = []
init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.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<T>: StackProtocol {
typealias Element = T
private var items: [T] = []
init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements = [T]()
init() {
elements = [T]()
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
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<T>: StackProtocol {
typealias Element = T
private var elements = [T]()
init() {
elements = [T]()
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
var items: [T] = []
init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.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<T>: StackProtocol {
typealias Element = T
var items: [T] = []
init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements = [T]()
init() { }
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
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<T>: StackProtocol {
typealias Element = T
private var elements = [T]()
init() { }
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { } // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
required init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
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<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
required init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var items = [T]()
required init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.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<T>: StackProtocol {
typealias Element = T
private var items = [T]()
required init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.popLast()
}
}
```var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
var items = [T]()
init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.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<T>: StackProtocol {
typealias Element = T
var items = [T]()
init() {}
func push(_ element: T) {
items.append(element)
}
func pop() -> T? {
return items.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements = [Element]()
required init() {}
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<T>: StackProtocol {
typealias Element = T
private var elements = [Element]()
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
required init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
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<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
required init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var items: [Element] = []
required init() {}
func push(_ element: Element) {
items.append(element)
}
func pop() -> Element? {
return items.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<T>: StackProtocol {
typealias Element = T
private var items: [Element] = []
required init() {}
func push(_ element: Element) {
items.append(element)
}
func pop() -> Element? {
return items.popLast()
}
}
```var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let newValue = newValue {
if let existingValue = storage[key] {
storage[key] = newValue
moveToHead(key: key)
} else {
if storage.count >= capacity {
let removedKey = removeTail()
storage[key] = newValue
moveToHead(key: key)
} else {
storage[key] = newValue
moveToHead(key: key)
}
}
} else {
storage[key] = nil
if key == head {
head = tail
}
if key == tail {
tail = head
}
}
}
}
private func moveToHead(key: Key) {
if head == nil {
head = key
tail = key
} else {
if key == tail {
tail = head
head = key
} else {
if let headKey = head {
storage[headKey] = nil
}
head = key
}
}
}
private func removeTail() -> Key? {
if let tailKey = tail {
storage[tailKey] = nil
tail = storage.first?.key
return tailKey
} else {
return nil
}
}
}### 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>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let newValue = newValue {
if let existingValue = storage[key] {
storage[key] = newValue
moveToHead(key: key)
} else {
if storage.count >= capacity {
let removedKey = removeTail()
storage[key] = newValue
moveToHead(key: key)
} else {
storage[key] = newValue
moveToHead(key: key)
}
}
} else {
storage[key] = nil
if key == head {
head = tail
}
if key == tail {
tail = head
}
}
}
}
private func moveToHead(key: Key) {
if head == nil {
head = key
tail = key
} else {
if key == tail {
tail = head
head = key
} else {
if let headKey = head {
storage[headKey] = nil
}
head = key
}
}
}
private func removeTail() -> Key? {
if let tailKey = tail {
storage[tailKey] = nil
tail = storage.first?.key
return tailKey
} else {
return nil
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'if let existingValue = storage[key] { // value 'existingValue' was defined but never used; consider replacing with boolean testlet removedKey = removeTail() // initialization of immutable value 'removedKey' was never used; consider replacing with assignment to '_' or removing itprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element]
private var order: [Key]
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
self.storage = [Key: Element]()
self.order = [Key]()
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let value = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
storage[key] = value
if storage.count > capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}### 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>: CacheProtocol {
private var storage: [Key: Element]
private var order: [Key]
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
self.storage = [Key: Element]()
self.order = [Key]()
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let value = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
storage[key] = value
if storage.count > capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let newValue = newValue {
if let existingValue = storage[key] {
storage[key] = newValue
moveToHead(key: key)
} else {
if storage.count == capacity {
let removedKey = removeTail()
storage[key] = newValue
moveToHead(key: key)
} else {
storage[key] = newValue
moveToHead(key: key)
}
}
} else {
storage[key] = nil
}
}
}
private func moveToHead(key: Key) {
if head == key {
return
}
if let head = head {
storage[head] = nil
}
head = key
if let tail = tail {
storage[tail] = nil
}
tail = key
}
private func removeTail() -> Key {
let removedKey = tail!
storage[removedKey] = nil
tail = storage.first { $0.value != nil }?.key
return removedKey
}
}### 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>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let newValue = newValue {
if let existingValue = storage[key] {
storage[key] = newValue
moveToHead(key: key)
} else {
if storage.count == capacity {
let removedKey = removeTail()
storage[key] = newValue
moveToHead(key: key)
} else {
storage[key] = newValue
moveToHead(key: key)
}
}
} else {
storage[key] = nil
}
}
}
private func moveToHead(key: Key) {
if head == key {
return
}
if let head = head {
storage[head] = nil
}
head = key
if let tail = tail {
storage[tail] = nil
}
tail = key
}
private func removeTail() -> Key {
let removedKey = tail!
storage[removedKey] = nil
tail = storage.first { $0.value != nil }?.key
return removedKey
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'if let existingValue = storage[key] { // value 'existingValue' was defined but never used; consider replacing with boolean testlet removedKey = removeTail() // initialization of immutable value 'removedKey' was never used; consider replacing with assignment to '_' or removing ittail = storage.first { $0.value != nil }?.key // comparing non-optional value of type 'Element' to 'nil' always returns trueprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element] = [:]
private var capacity: Int
private var order: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
storage[key] = newValue
if storage.count > capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}### 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>: CacheProtocol {
private var storage: [Key: Element] = [:]
private var capacity: Int
private var order: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
storage[key] = newValue
if storage.count > capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element] = [:]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let element = newValue {
if let existingElement = storage[key] {
storage[key] = element
moveToHead(key: key)
} else {
if storage.count == capacity {
let removedKey = removeTail()
storage[key] = element
moveToHead(key: key)
} else {
storage[key] = element
moveToHead(key: key)
}
}
} else {
storage[key] = nil
}
}
}
private func moveToHead(key: Key) {
if head == key {
return
}
if let head = head {
storage[head] = nil
}
head = key
storage[key] = storage[key]
}
private func removeTail() -> Key {
let removedKey = tail!
if let tail = tail {
storage[tail] = nil
}
tail = head
head = nil
return removedKey
}
}### 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>: CacheProtocol {
private var storage: [Key: Element] = [:]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let element = newValue {
if let existingElement = storage[key] {
storage[key] = element
moveToHead(key: key)
} else {
if storage.count == capacity {
let removedKey = removeTail()
storage[key] = element
moveToHead(key: key)
} else {
storage[key] = element
moveToHead(key: key)
}
}
} else {
storage[key] = nil
}
}
}
private func moveToHead(key: Key) {
if head == key {
return
}
if let head = head {
storage[head] = nil
}
head = key
storage[key] = storage[key]
}
private func removeTail() -> Key {
let removedKey = tail!
if let tail = tail {
storage[tail] = nil
}
tail = head
head = nil
return removedKey
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'if let existingElement = storage[key] { // value 'existingElement' was defined but never used; consider replacing with boolean testlet removedKey = removeTail() // initialization of immutable value 'removedKey' was never used; consider replacing with assignment to '_' or removing itprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
storage[key] = newValue
if storage.count > capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
} else if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}### 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>: CacheProtocol {
private var storage: [Key: Element] = [:]
private var order: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
}
order.append(key)
storage[key] = newValue
if storage.count > capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
} else if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var capacity: Int
private var order: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let element = cache[key] {
order.removeAll { $0 == key }
order.append(key)
return element
}
return nil
}
set {
if let newValue = newValue {
if cache.count >= capacity {
let removedKey = order.removeFirst()
cache.removeValue(forKey: removedKey)
}
cache[key] = newValue
order.append(key)
} else {
cache.removeValue(forKey: key)
order.removeAll { $0 == key }
}
}
}
}### 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>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var capacity: Int
private var order: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let element = cache[key] {
order.removeAll { $0 == key }
order.append(key)
return element
}
return nil
}
set {
if let newValue = newValue {
if cache.count >= capacity {
let removedKey = order.removeFirst()
cache.removeValue(forKey: removedKey)
}
cache[key] = newValue
order.append(key)
} else {
cache.removeValue(forKey: key)
order.removeAll { $0 == key }
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var order: [Key]
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
self.order = [Key]()
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
storage[key] = newValue
} else {
if storage.count == capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
order.append(key)
storage[key] = newValue
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}### 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>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var order: [Key]
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
self.order = [Key]()
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
storage[key] = newValue
} else {
if storage.count == capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
order.append(key)
storage[key] = newValue
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let newValue = newValue {
if let oldValue = storage[key] {
remove(key: key)
insert(key: key, value: newValue, after: oldValue)
} else {
insert(key: key, value: newValue)
}
} else {
remove(key: key)
}
}
}
private func insert(key: Key, value: Element, after: Key? = nil) {
storage[key] = value
if let after = after {
if let index = storage.index(forKey: after) {
storage.remove(at: index)
storage[key] = value
}
}
if head == nil {
head = key
}
if tail == nil {
tail = key
}
if let tail = tail {
if key != tail {
storage[tail] = value
}
}
tail = key
if storage.count > capacity {
let removedKey = remove()
storage[removedKey] = nil
}
}
private func remove(key: Key) {
if let index = storage.index(forKey: key) {
storage.remove(at: index)
}
if key == head {
head = storage.first?.key
}
if key == tail {
tail = storage.last?.key
}
}
private func remove() -> Key {
let removedKey = head
head = storage[head]
return removedKey
}
}### 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>: CacheProtocol {
private var storage: [Key: Element]
private var capacity: Int
private var head: Key?
private var tail: Key?
init(capacity: Int) {
self.storage = [Key: Element]()
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
return storage[key]
}
set {
if let newValue = newValue {
if let oldValue = storage[key] {
remove(key: key)
insert(key: key, value: newValue, after: oldValue)
} else {
insert(key: key, value: newValue)
}
} else {
remove(key: key)
}
}
}
private func insert(key: Key, value: Element, after: Key? = nil) {
storage[key] = value
if let after = after {
if let index = storage.index(forKey: after) {
storage.remove(at: index)
storage[key] = value
}
}
if head == nil {
head = key
}
if tail == nil {
tail = key
}
if let tail = tail {
if key != tail {
storage[tail] = value
}
}
tail = key
if storage.count > capacity {
let removedKey = remove()
storage[removedKey] = nil
}
}
private func remove(key: Key) {
if let index = storage.index(forKey: key) {
storage.remove(at: index)
}
if key == head {
head = storage.first?.key
}
if key == tail {
tail = storage.last?.key
}
}
private func remove() -> Key {
let removedKey = head
head = storage[head]
return removedKey
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'insert(key: key, value: newValue, after: oldValue) // cannot convert value of type 'Element' to expected argument type 'Key?'tail = storage.last?.key // value of type '[Key : Element]' has no member 'last'head = storage[head] // no exact matches in call to subscripthead = storage[head] // no 'subscript' candidates produce the expected contextual result type 'Key?'return removedKey // value of optional type 'Key?' must be unwrapped to a value of type 'Key'protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var storage: [Key: Element]
private var order: [Key]
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
self.storage = [Key: Element]()
self.order = [Key]()
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
storage[key] = newValue
} else {
if storage.count >= capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
order.append(key)
storage[key] = newValue
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}### 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>: CacheProtocol {
private var storage: [Key: Element]
private var order: [Key]
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
self.storage = [Key: Element]()
self.order = [Key]()
}
subscript(key: Key) -> Element? {
get {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
return storage[key]
}
return nil
}
set {
if let newValue = newValue {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
order.append(key)
storage[key] = newValue
} else {
if storage.count >= capacity {
let removedKey = order.removeFirst()
storage.removeValue(forKey: removedKey)
}
order.append(key)
storage[key] = newValue
}
} else {
if let index = order.firstIndex(of: key) {
order.remove(at: index)
storage.removeValue(forKey: key)
}
}
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: TimeInterval)] = [:]
private var timer: Timer?
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
startTimerIfNeeded()
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key] {
if expiration > Date().timeIntervalSince1970 {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
private func startTimerIfNeeded() {
if timer == nil {
timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] _ in
self?.removeExpiredValues()
}
}
}
private func removeExpiredValues() {
cache = cache.filter {
if $0.value.expiration > Date().timeIntervalSince1970 {
return true
} else {
return false
}
}
}
}### 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: Value, expiration: TimeInterval)] = [:]
private var timer: Timer?
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
startTimerIfNeeded()
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key] {
if expiration > Date().timeIntervalSince1970 {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
private func startTimerIfNeeded() {
if timer == nil {
timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] _ in
self?.removeExpiredValues()
}
}
}
private func removeExpiredValues() {
cache = cache.filter {
if $0.value.expiration > Date().timeIntervalSince1970 {
return true
} else {
return false
}
}
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache.removeValue(forKey: key)
return nil
}
return value
}
}### 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: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}### 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: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}### 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: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
private var timer: Timer?
init() {
timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] _ in
self?.removeExpired()
}
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration > Date().timeIntervalSince1970 {
return value
} else {
cache[key] = nil
return nil
}
}
private func removeExpired() {
cache = cache.filter { $0.value.expiration > Date().timeIntervalSince1970 }
}
}### 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: Value, expiration: TimeInterval)] = [:]
private var timer: Timer?
init() {
timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] _ in
self?.removeExpired()
}
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration > Date().timeIntervalSince1970 {
return value
} else {
cache[key] = nil
return nil
}
}
private func removeExpired() {
cache = cache.filter { $0.value.expiration > Date().timeIntervalSince1970 }
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else {
return nil
}
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}### 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: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else {
return nil
}
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}### 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: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else { return nil }
if expiration < Date().timeIntervalSince1970 {
cache[key] = nil
return nil
}
return value
}
}
```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: [Key: (value: Value, expiration: TimeInterval)] = [:]
private let queue = DispatchQueue(label: "ExpirableCache.queue")
func put(value: Value, key: Key, expiration: TimeInterval) {
queue.async {
self.cache[key] = (value, expiration)
}
}
func get(key: Key) -> Value? {
queue.sync {
if let (value, expiration) = cache[key], expiration > Date().timeIntervalSince1970 {
return value
} else {
cache[key] = nil
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: Value, expiration: TimeInterval)] = [:]
private let queue = DispatchQueue(label: "ExpirableCache.queue")
func put(value: Value, key: Key, expiration: TimeInterval) {
queue.async {
self.cache[key] = (value, expiration)
}
}
func get(key: Key) -> Value? {
queue.sync {
if let (value, expiration) = cache[key], expiration > Date().timeIntervalSince1970 {
return value
} else {
cache[key] = nil
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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key] {
if expiration > Date().timeIntervalSince1970 {
return value
} else {
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 var cache: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key] {
if expiration > Date().timeIntervalSince1970 {
return value
} else {
cache.removeValue(forKey: key)
}
}
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: [Key: (value: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else {
return nil
}
if expiration < Date().timeIntervalSince1970 {
cache.removeValue(forKey: key)
return nil
}
return value
}
}### 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: Value, expiration: TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key] else {
return nil
}
if expiration < Date().timeIntervalSince1970 {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
```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 data = string.data(using: .utf8)!
for i in 0..<key.count {
let keyChar = key[key.index(key.startIndex, offsetBy: i)]
let dataChar = data[data.index(data.startIndex, offsetBy: i)]
data[data.index(data.startIndex, offsetBy: i)] = dataChar ^ keyChar
}
return data
}
func decrypt(_ data: Data, _ key: String) -> String {
var data = data
for i in 0..<key.count {
let keyChar = key[key.index(key.startIndex, offsetBy: i)]
let dataChar = data[data.index(data.startIndex, offsetBy: i)]
data[data.index(data.startIndex, offsetBy: i)] = dataChar ^ keyChar
}
return String(data: data, encoding: .utf8)!
}
}### 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 = string.data(using: .utf8)!
for i in 0..<key.count {
let keyChar = key[key.index(key.startIndex, offsetBy: i)]
let dataChar = data[data.index(data.startIndex, offsetBy: i)]
data[data.index(data.startIndex, offsetBy: i)] = dataChar ^ keyChar
}
return data
}
func decrypt(_ data: Data, _ key: String) -> String {
var data = data
for i in 0..<key.count {
let keyChar = key[key.index(key.startIndex, offsetBy: i)]
let dataChar = data[data.index(data.startIndex, offsetBy: i)]
data[data.index(data.startIndex, offsetBy: i)] = dataChar ^ keyChar
}
return String(data: data, encoding: .utf8)!
}
}
```data[data.index(data.startIndex, offsetBy: i)] = dataChar ^ keyChar // cannot convert value of type 'Character' to expected argument type 'UInt8'data[data.index(data.startIndex, offsetBy: i)] = dataChar ^ keyChar // cannot convert value of type 'Character' to expected argument type 'UInt8'protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}
```let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ key[i % key.count]
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
decryptedData[i] = data[i] ^ key[i % key.count]
}
return String(data: decryptedData, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ key[i % key.count]
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedData = Data(count: data.count)
for i in 0..<data.count {
decryptedData[i] = data[i] ^ key[i % key.count]
}
return String(data: decryptedData, encoding: .utf8)!
}
}
```encryptedData[i] = data[i] ^ key[i % key.count] // cannot convert value of type 'Character' to expected argument type 'UInt8'decryptedData[i] = data[i] ^ key[i % key.count] // cannot convert value of type 'Character' to expected argument type 'UInt8'protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}
```let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = NSMutableData(length: data.count)!
for i in 0..<data.count {
encryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return encryptedData as Data
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = NSMutableData(length: data.count)!
for i in 0..<data.count {
decryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return String(data: decryptedData as Data, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = NSMutableData(length: data.count)!
for i in 0..<data.count {
encryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return encryptedData as Data
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = NSMutableData(length: data.count)!
for i in 0..<data.count {
decryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return String(data: decryptedData as Data, encoding: .utf8)!
}
}
```encryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])]) // cannot convert value of type 'Range<Int>' to expected argument type 'NSRange' (aka '_NSRange')decryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])]) // cannot convert value of type 'Range<Int>' to expected argument type 'NSRange' (aka '_NSRange')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}
```let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = NSMutableData(length: data.count)!
for i in 0..<data.count {
result.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return result as Data
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = NSMutableData(length: data.count)!
for i in 0..<data.count {
result.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return String(data: result as Data, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = NSMutableData(length: data.count)!
for i in 0..<data.count {
result.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return result as Data
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = NSMutableData(length: data.count)!
for i in 0..<data.count {
result.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])])
}
return String(data: result as Data, encoding: .utf8)!
}
}
```result.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])]) // cannot convert value of type 'Range<Int>' to expected argument type 'NSRange' (aka '_NSRange')result.replaceBytes(in: i..<i+1, withBytes: [UInt8(data[i] ^ keyData[i % keyData.count])]) // cannot convert value of type 'Range<Int>' to expected argument type 'NSRange' (aka '_NSRange')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var result = Data()
for i in 0..<data.count {
result.append(data[i] ^ keyData[i % keyData.count])
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var result = Data()
for i in 0..<data.count {
result.append(data[i] ^ keyData[i % keyData.count])
}
return String(data: result, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var result = Data()
for i in 0..<data.count {
result.append(data[i] ^ keyData[i % keyData.count])
}
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var result = Data()
for i in 0..<data.count {
result.append(data[i] ^ keyData[i % keyData.count])
}
return String(data: result, encoding: .utf8)!
}
}
```protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return result
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] }
return String(data: result, encoding: .utf8)!
}
}
```let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')let result = data.map { $0 ^ keyData[data.startIndex.advanced(by: $0.distance(to: data.startIndex)) % keyData.count] } // cannot convert value of type 'Data.Index' (aka 'Int') to expected argument type 'Data.Element' (aka 'UInt8')protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = NSMutableData(length: data.count)!
data.withUnsafeBytes { (dataPointer: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyPointer: UnsafePointer<UInt8>) in
for i in 0..<data.count {
encryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(dataPointer[i] ^ keyPointer[i % keyData.count])])
}
}
}
return encryptedData as Data
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = NSMutableData(length: data.count)!
data.withUnsafeBytes { (dataPointer: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyPointer: UnsafePointer<UInt8>) in
for i in 0..<data.count {
decryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(dataPointer[i] ^ keyPointer[i % keyData.count])])
}
}
}
return String(data: decryptedData as Data, encoding: .utf8)!
}
}### 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 {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = NSMutableData(length: data.count)!
data.withUnsafeBytes { (dataPointer: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyPointer: UnsafePointer<UInt8>) in
for i in 0..<data.count {
encryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(dataPointer[i] ^ keyPointer[i % keyData.count])])
}
}
}
return encryptedData as Data
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = NSMutableData(length: data.count)!
data.withUnsafeBytes { (dataPointer: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyPointer: UnsafePointer<UInt8>) in
for i in 0..<data.count {
decryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(dataPointer[i] ^ keyPointer[i % keyData.count])])
}
}
}
return String(data: decryptedData as Data, encoding: .utf8)!
}
}
```encryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(dataPointer[i] ^ keyPointer[i % keyData.count])]) // cannot convert value of type 'Range<Int>' to expected argument type 'NSRange' (aka '_NSRange')decryptedData.replaceBytes(in: i..<i+1, withBytes: [UInt8(dataPointer[i] ^ keyPointer[i % keyData.count])]) // cannot convert value of type 'Range<Int>' to expected argument type 'NSRange' (aka '_NSRange')protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequest: Date?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequest = lastRequest {
let timeElapsed = Date().timeIntervalSince(lastRequest)
if timeElapsed < timeInterval {
return false
}
}
lastRequest = 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 lastRequest: Date?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequest = lastRequest {
let timeElapsed = Date().timeIntervalSince(lastRequest)
if timeElapsed < timeInterval {
return false
}
}
lastRequest = 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 RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
}
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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
}
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 timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime) // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'lastRequestTime = Date() // cannot assign value of type 'Date' to type 'TimeInterval?' (aka 'Optional<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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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 timeElapsed = Date().timeIntervalSince(lastRequestTime) // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'lastRequestTime = Date() // cannot assign value of type 'Date' to type 'TimeInterval?' (aka 'Optional<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: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.lastRequestTime = 0
}
func allowRequest() -> Bool {
let currentTime = Date().timeIntervalSince1970
if currentTime - lastRequestTime > timeInterval {
lastRequestTime = currentTime
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 maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.lastRequestTime = 0
}
func allowRequest() -> Bool {
let currentTime = Date().timeIntervalSince1970
if currentTime - lastRequestTime > timeInterval {
lastRequestTime = currentTime
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 maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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 timeElapsed = Date().timeIntervalSince(lastRequestTime) // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'lastRequestTime = Date() // cannot assign value of type 'Date' to type 'TimeInterval?' (aka 'Optional<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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
}
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 let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime)
if timeSinceLastRequest < timeInterval {
return false
}
}
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 timeSinceLastRequest = Date().timeIntervalSince(lastRequestTime) // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'lastRequestTime = Date() // cannot assign value of type 'Date' to type 'TimeInterval?' (aka 'Optional<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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
lastRequestTime = Date().timeIntervalSince1970
return true
}
let currentTime = Date().timeIntervalSince1970
let timeElapsed = currentTime - lastRequestTime
let requestsMade = Int(timeElapsed / timeInterval)
if requestsMade >= maxRequests {
return false
}
lastRequestTime = currentTime
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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
guard let lastRequestTime = lastRequestTime else {
lastRequestTime = Date().timeIntervalSince1970
return true
}
let currentTime = Date().timeIntervalSince1970
let timeElapsed = currentTime - lastRequestTime
let requestsMade = Int(timeElapsed / timeInterval)
if requestsMade >= maxRequests {
return false
}
lastRequestTime = currentTime
return true
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'lastRequestTime = currentTime // 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 maxRequests: Int
private var timeInterval: TimeInterval
private var lastRequestTime: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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 timeElapsed = Date().timeIntervalSince(lastRequestTime) // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'lastRequestTime = Date() // cannot assign value of type 'Date' to type 'TimeInterval?' (aka 'Optional<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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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: TimeInterval?
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
if let lastRequestTime = lastRequestTime {
let timeElapsed = Date().timeIntervalSince(lastRequestTime)
if timeElapsed < timeInterval {
return false
}
}
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 timeElapsed = Date().timeIntervalSince(lastRequestTime) // cannot convert value of type 'TimeInterval' (aka 'Double') to expected argument type 'Date'lastRequestTime = Date() // cannot assign value of type 'Date' to type 'TimeInterval?' (aka 'Optional<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: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.lastRequestTime = Date().timeIntervalSince1970
}
func allowRequest() -> Bool {
let currentTime = Date().timeIntervalSince1970
let timeSinceLastRequest = currentTime - lastRequestTime
if timeSinceLastRequest < timeInterval {
return false
}
lastRequestTime = currentTime
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: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
self.lastRequestTime = Date().timeIntervalSince1970
}
func allowRequest() -> Bool {
let currentTime = Date().timeIntervalSince1970
let timeSinceLastRequest = currentTime - lastRequestTime
if timeSinceLastRequest < timeInterval {
return false
}
lastRequestTime = currentTime
return true
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var _value: Int
private let _lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
_lock.lock()
_value += 1
_lock.unlock()
}
func currentValue() -> Int {
_lock.lock()
let value = _value
_lock.unlock()
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 _value: Int
private let _lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
_lock.lock()
_value += 1
_lock.unlock()
}
func currentValue() -> Int {
_lock.lock()
let value = _value
_lock.unlock()
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var _value: Int
private let lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
_value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 _value: Int
private let lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
_value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return _value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var _value: Int
private let lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
_value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 _value: Int
private let lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
_value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return _value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
defer { lock.unlock() }
value += 1
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return value
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var _value: Int
private let lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
lock.lock()
_value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
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 _value: Int
private let lock = NSLock()
init(value: Int) {
_value = value
}
func increment() {
lock.lock()
_value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
defer { lock.unlock() }
return _value
}
}
```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<Output>: PipelineProtocol {
let value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return 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<Output>: PipelineProtocol {
let value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return value
}
}
```init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return 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>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return 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>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return 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>: PipelineProtocol {
typealias Output = T
var value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return value
}
}
```init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return 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>: PipelineProtocol {
typealias Output = T
private var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return 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>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return 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>: PipelineProtocol {
typealias Output = T
var value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return value
}
}
```init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return 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>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> T {
return value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
let value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return 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<Output>: PipelineProtocol {
let value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return value
}
}
```init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<Output>: PipelineProtocol {
let value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return value
}
}
extension PipelineProtocol {
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(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<Output>: PipelineProtocol {
let value: Output
init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
func execute() -> Output {
return value
}
}
extension PipelineProtocol {
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
return Pipeline<U>(value: transform(value))
}
}
let pipeline = Pipeline(value: 1)
.pipe { $0 + 1 }
.pipe { $0 * 2 }
.pipe { String($0) }
.pipe { $0.count }
.execute()
print(pipeline) // 4
```init(value: Output) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<Output>'return Pipeline<U>(value: transform(value)) // cannot find 'value' in scopeprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
var value: Value
var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
}### 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 {
var value: Value
var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(value) }
}
}
```observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol 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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(value) }
}
}
```observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
var value: Value {
get {
return self.value
}
set {
self.value = newValue
self.notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
self.observers[uuid] = observer
observer(self.value)
return uuid
}
func unsubscribe(_ observer: UUID) {
self.observers[observer] = nil
}
private func notifyObservers() {
for (_, observer) in self.observers {
observer(self.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 Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
var value: Value {
get {
return self.value
}
set {
self.value = newValue
self.notifyObservers()
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
self.observers[uuid] = observer
observer(self.value)
return uuid
}
func unsubscribe(_ observer: UUID) {
self.observers[observer] = nil
}
private func notifyObservers() {
for (_, observer) in self.observers {
observer(self.value)
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(value) }
}
}
```observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var _value: Value
init(value: Value) {
_value = value
}
var value: Value {
get { return _value }
set {
_value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
}### 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 Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var _value: Value
init(value: Value) {
_value = value
}
var value: Value {
get { return _value }
set {
_value = newValue
for observer in observers.values {
observer(newValue)
}
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> {
private var observers: [UUID: (Value) -> Void] = [:]
private(set) var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func update(with newValue: Value) {
value = newValue
observers.values.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> {
private var observers: [UUID: (Value) -> Void] = [:]
private(set) var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func update(with newValue: Value) {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
```observable.value = 10 // cannot assign to property: 'value' setter is inaccessibleobservable.value = 20 // cannot assign to property: 'value' setter is inaccessibleobservable.value = 30 // cannot assign to property: 'value' setter is inaccessibleprotocol 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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(value) }
}
}
```observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol 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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(value) }
}
}
```observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol 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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(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> {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers[observer] = nil
}
func setValue(_ value: Value) {
self.value = value
observers.values.forEach { $0(value) }
}
}
```observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
struct Model {
@Clamped(0...10) var value: Int = 5
}### 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
struct Model {
@Clamped(0...10) var value: Int = 5
}
let model = Model()
print(model.value) // 5
model.value = 15
print(model.value) // 10
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var value: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.value = wrappedValue
self.range = range
}
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
}
extension Clamped: Equatable where Value: Equatable {}
extension Clamped: Hashable where Value: Hashable {}
extension ClampedProtocol {
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = newValue }
}
}### 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<Value: Comparable>: ClampedProtocol {
private var value: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.value = wrappedValue
self.range = range
}
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
}
extension Clamped: Equatable where Value: Equatable {}
extension Clamped: Hashable where Value: Hashable {}
extension ClampedProtocol {
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = newValue }
}
}
```get { wrappedValue } // cannot find 'wrappedValue' in scopeset { wrappedValue = newValue } // cannot find 'wrappedValue' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, 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<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
private let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
var projectedValue: Value {
get { wrappedValue }
set { wrappedValue = clamp(newValue, to: range) }
}
}
extension ClosedRange where Bound: Comparable {
func clamp(_ value: Bound) -> Bound {
return Swift.max(lowerBound, Swift.min(upperBound, value))
}
}
```set { wrappedValue = clamp(newValue, to: range) } // cannot find 'clamp' in scopeprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var _wrappedValue: Value
var wrappedValue: Value {
get { _wrappedValue }
set { _wrappedValue = min(max(newValue, range.lowerBound), range.upperBound) }
}
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
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<Value: Comparable>: ClampedProtocol {
private var _wrappedValue: Value
var wrappedValue: Value {
get { _wrappedValue }
set { _wrappedValue = min(max(newValue, range.lowerBound), range.upperBound) }
}
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self._wrappedValue = wrappedValue
self.range = range
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var value: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { print("[\($0.0)]: \($0.1)") })
var name: String
}### 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<Value> {
private var value: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { print("[\($0.0)]: \($0.1)") })
var name: String
}
let user = User(name: "John")
print(user.name)
// [get]: John
user.name = "Jane"
// [set]: Jane
print(user.name)
// [get]: Jane
```@Logged(logger: { print("[\($0.0)]: \($0.1)") }) // missing argument for parameter 'wrappedValue' in call@Logged(logger: { print("[\($0.0)]: \($0.1)") }) // contextual closure type '(Event, String) -> Void' expects 2 arguments, but 1 was used in closure bodyenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
private var value: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.value = wrappedValue
}
var wrappedValue: Value {
get {
logger?(.get, value)
return value
}
set {
logger?(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { print($0) })
var name: String
}### 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<Value> {
private var logger: ((Event, Value) -> Void)?
private var value: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.value = wrappedValue
}
var wrappedValue: Value {
get {
logger?(.get, value)
return value
}
set {
logger?(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { print($0) })
var name: String
}
let user = User(name: "John")
print(user.name) // get
user.name = "Jane" // set
print(user.name) // get
```@Logged(logger: { print($0) }) // contextual closure type '(Event, String) -> Void' expects 2 arguments, but 1 was used in closure body@Logged(logger: { print($0) }) // missing argument for parameter 'wrappedValue' in callenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var projectedValue: Logged<Value> {
self
}
func get() -> Value {
logger?(.get, wrappedValue)
return wrappedValue
}
func set(_ newValue: Value) {
logger?(.set, newValue)
wrappedValue = newValue
}
}
struct User {
@Logged var name: String
@Logged var age: Int
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var projectedValue: Logged<Value> {
self
}
func get() -> Value {
logger?(.get, wrappedValue)
return wrappedValue
}
func set(_ newValue: Value) {
logger?(.set, newValue)
wrappedValue = newValue
}
}
struct User {
@Logged var name: String
@Logged var age: Int
}
let user = User(name: "John", age: 30)
user.$name.logger = { event, value in
print("name: \(event) \(value)")
}
user.$age.logger = { event, value in
print("age: \(event) \(value)")
}
user.name = "Jane"
user.age = 31
```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<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
init(wrappedValue: Value) {
self.wrappedValue = wrappedValue
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}### 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<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
init(wrappedValue: Value) {
self.wrappedValue = wrappedValue
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}
let person = Person(name: "John", age: 30)
person.$name.logger = { event, value in
print("name: \(event.rawValue) \(value)")
}
person.$age.logger = { event, value in
print("age: \(event.rawValue) \(value)")
}
person.name = "Jane"
person.age = 31
```struct Logged<Value> { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'logger?(.set, wrappedValue) // ambiguous use of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
var value: Value {
get {
logger?(.get, wrappedValue)
return wrappedValue
}
set {
wrappedValue = newValue
logger?(.set, wrappedValue)
}
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}### 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<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
var value: Value {
get {
logger?(.get, wrappedValue)
return wrappedValue
}
set {
wrappedValue = newValue
logger?(.set, wrappedValue)
}
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}
let person = Person(name: "John", age: 30)
person.name = "Jane"
person.age = 31
person.name // "Jane"
person.age // 31
```struct Logged<Value> { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'logger?(.set, wrappedValue) // ambiguous use of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
private var value: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.value = wrappedValue
}
var wrappedValue: Value {
get {
logger?(.get, value)
return value
}
set {
logger?(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in print("User: \(event) \(value)") })
var name: String
}### 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<Value> {
private var logger: ((Event, Value) -> Void)?
private var value: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.value = wrappedValue
}
var wrappedValue: Value {
get {
logger?(.get, value)
return value
}
set {
logger?(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in print("User: \(event) \(value)") })
var name: String
}
let user = User(name: "John")
print(user.name)
// Prints: User: get John
user.name = "Jane"
// Prints: User: set Jane
```@Logged(logger: { event, value in print("User: \(event) \(value)") }) // missing argument for parameter 'wrappedValue' in callenum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var wrappedValue: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
var value: Value {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
wrappedValue = newValue
logger(.set, wrappedValue)
}
}
}### 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<Value> {
private var wrappedValue: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
var value: Value {
get {
logger(.get, wrappedValue)
return wrappedValue
}
set {
wrappedValue = newValue
logger(.set, wrappedValue)
}
}
}
```struct Logged<Value> { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'logger(.set, wrappedValue) // ambiguous use of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var value: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = 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<Value> {
private var value: Value
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: Value {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
init(wrappedValue: Value) {
self.init(wrappedValue: wrappedValue, logger: { _, _ in })
}
}
struct User {
@Logged var name: String
@Logged var age: Int
}### 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<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
init(wrappedValue: Value) {
self.init(wrappedValue: wrappedValue, logger: { _, _ in })
}
}
struct User {
@Logged var name: String
@Logged var age: Int
}
let user = User(name: "John", age: 30)
user.$name.logger = { event, value in
print("Name \(event): \(value)")
}
user.$age.logger = { event, value in
print("Age \(event): \(value)")
}
user.name = "Jane"
user.age = 31
```struct Logged<Value> { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'logger?(.set, wrappedValue) // ambiguous use of 'wrappedValue'enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
var value: Value {
get {
logger?(.get, wrappedValue)
return wrappedValue
}
set {
wrappedValue = newValue
logger?(.set, wrappedValue)
}
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}### 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<Value> {
private var logger: ((Event, Value) -> Void)?
private var wrappedValue: Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.logger = logger
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
didSet {
logger?(.set, wrappedValue)
}
}
var projectedValue: Logged<Value> {
return self
}
var value: Value {
get {
logger?(.get, wrappedValue)
return wrappedValue
}
set {
wrappedValue = newValue
logger?(.set, wrappedValue)
}
}
}
struct Person {
@Logged var name: String
@Logged var age: Int
}
let person = Person(name: "John", age: 30)
person.name = "Jane"
person.age = 31
```struct Logged<Value> { // property wrapper type 'Logged' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'logger?(.set, wrappedValue) // ambiguous use of 'wrappedValue'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private var provider: WeatherProvider
private var city: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city += String(character)
return nil
case .keyboardDeleteBackwards:
city = String(city.dropLast())
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}### 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
private var city: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city += String(character)
return nil
case .keyboardDeleteBackwards:
city = String(city.dropLast())
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
case .keyboardDeleteBackwards:
searchBarText.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
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
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
case .keyboardDeleteBackwards:
searchBarText.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
return nil
}
}
```protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
case .keyboardDeleteBackwards:
searchBarText.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
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
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
case .keyboardDeleteBackwards:
searchBarText.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
return nil
}
}
```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
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
case .keyboardDeleteBackwards:
searchBarText.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
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
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
case .keyboardDeleteBackwards:
searchBarText.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
return nil
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchText.append(character)
return nil
case .keyboardDeleteBackwards:
searchText.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchText)
return .success(city: searchText, forecast: forecast)
} catch {
return .failure(city: searchText)
}
}
}
}### 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
private var searchText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchText.append(character)
return nil
case .keyboardDeleteBackwards:
searchText.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchText)
return .success(city: searchText, forecast: forecast)
} catch {
return .failure(city: searchText)
}
}
}
}
```protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var city: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city.append(character)
return nil
case .keyboardDeleteBackwards:
city.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}### 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
private var city: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city.append(character)
return nil
case .keyboardDeleteBackwards:
city.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}
```protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
searchBarText.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### 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
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
searchBarText.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var city: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city.append(character)
case .keyboardDeleteBackwards:
city.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
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
private var city: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city.append(character)
case .keyboardDeleteBackwards:
city.removeLast()
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
return nil
}
}
```protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
searchBarText.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### 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
private var searchBarText: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
searchBarText.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var city: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city.append(character)
return .success(city: city, forecast: "")
case .keyboardDeleteBackwards:
city.removeLast()
return .success(city: city, forecast: "")
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}### 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
private var city: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
city.append(character)
return .success(city: city, forecast: "")
case .keyboardDeleteBackwards:
city.removeLast()
return .success(city: city, forecast: "")
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: city)
return .success(city: city, forecast: forecast)
} catch {
return .failure(city: city)
}
}
}
}
``` // XCTAssertNil failed: expression is not nilprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
return await self.balance
}
}
func deposit(amount: Double) async {
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}### 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
}
var balance: Double {
get async {
return await self.balance
}
}
func deposit(amount: Double) async {
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'return 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount > balance {
return false
}
balance -= amount
return true
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount > balance {
return false
}
balance -= amount
return true
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
var balance: Double {
get async {
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 {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
var balance: Double {
get async {
return balance
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount > balance {
return false
}
balance -= amount
return true
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount > balance {
return false
}
balance -= amount
return true
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
} else {
return false
}
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount <= balance {
balance -= amount
return true
}
return false
}
}
```protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount > balance {
return false
}
balance -= amount
return true
}
}### 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 {
var balance: Double
init(balance: Double) {
self.balance = balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if amount > balance {
return false
}
balance -= amount
return true
}
}
```protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
private let wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = self.wrappedValue()
}
return value!
} else {
return self.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 {
private var value: Value?
private let condition: () -> Bool
private let wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = self.wrappedValue()
}
return value!
} else {
return self.wrappedValue()
}
}
}
```struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'value = self.wrappedValue() // 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 value: Value?
private let condition: () -> Bool
private let wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = self.wrappedValue()
}
return value!
} else {
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 {
private var value: Value?
private let condition: () -> Bool
private let wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = self.wrappedValue()
}
return value!
} else {
return wrappedValue()
}
}
}
```struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'value = self.wrappedValue() // 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 condition: () -> Bool
private var value: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.value = wrappedValue()
}
var wrappedValue: Value {
if condition() {
value = wrappedValue()
}
return 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 condition: () -> Bool
private var value: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.value = wrappedValue()
}
var wrappedValue: Value {
if condition() {
value = wrappedValue()
}
return value!
}
}
```value = wrappedValue() // cannot call value of non-function type 'Value'value = wrappedValue() // 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 value: Value?
private var condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if condition() {
if value == nil {
value = wrappedValue()
}
} else {
value = nil
}
return value!
}
set {
value = newValue
}
}
}### 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
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if condition() {
if value == nil {
value = wrappedValue()
}
} else {
value = nil
}
return value!
}
set {
value = newValue
}
}
}
```value = wrappedValue() // cannot call value of non-function type 'Value'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if condition() {
if value == nil {
value = wrappedValue()
}
} else {
value = nil
}
return value!
}
set {
value = newValue
}
}
}### 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 let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if condition() {
if value == nil {
value = wrappedValue()
}
} else {
value = nil
}
return value!
}
set {
value = newValue
}
}
}
```value = wrappedValue() // cannot call value of non-function type 'Value'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if condition() && value == nil {
value = wrappedValue()
}
return value!
}
set {
value = newValue
}
}
}### 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 let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if condition() && value == nil {
value = wrappedValue()
}
return value!
}
set {
value = newValue
}
}
}
```value = wrappedValue() // cannot call value of non-function type 'Value'protocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var condition: () -> Bool
private var value: Value?
private var wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = wrappedValue()
}
return value!
} else {
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 {
private var condition: () -> Bool
private var value: Value?
private var wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.wrappedValue = wrappedValue
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = wrappedValue()
}
return value!
} else {
return wrappedValue()
}
}
}
```struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'value = wrappedValue() // 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 value: Value?
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = wrappedValue()
}
} else {
value = nil
}
return 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 value: Value?
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = nil
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = wrappedValue()
}
} else {
value = nil
}
return value!
}
}
```value = wrappedValue() // cannot call value of non-function type 'Value'value = wrappedValue() // cannot assign to property: 'self' is immutablevalue = nil // 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 value: Value?
private let condition: () -> Bool
private let wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = self.wrappedValue()
}
return value!
} else {
return self.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 {
private var value: Value?
private let condition: () -> Bool
private let wrappedValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.wrappedValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = self.wrappedValue()
}
return value!
} else {
return self.wrappedValue()
}
}
}
```struct Cached<Value>: CachedProperty { // property wrapper type 'Cached' has multiple non-static properties named 'wrappedValue'var wrappedValue: Value { // invalid redeclaration of 'wrappedValue'value = self.wrappedValue() // 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 condition: () -> Bool
private var value: Value?
private var computed: (() -> Value)?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.value = nil
self.computed = wrappedValue
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = computed?()
}
return value!
} else {
return computed?() ?? 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 condition: () -> Bool
private var value: Value?
private var computed: (() -> Value)?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.value = nil
self.computed = wrappedValue
}
var wrappedValue: Value {
if condition() {
if value == nil {
value = computed?()
}
return value!
} else {
return computed?() ?? Value()
}
}
}
```value = computed?() // cannot assign to property: 'self' is immutablereturn computed?() ?? Value() // type 'Value' has no member 'init'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
func add(x: Int, y: Int) -> Int {
return x + y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}### 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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
func add(x: Int, y: Int) -> Int {
return x + y
}
func multiply(x: Int, y: Int) -> Int {
return x * y
}
let addAndMultiply = add >>> multiply
print(addAndMultiply(x: 2, y: 3)) // 10
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
let add1 = { x in x + 1 }
let add2 = { x in x + 2 }
let add3 = { x in x + 3 }
let add1add2 = add1 >>> add2
let add1add3 = add1 >>> add3
add1add2(1) // 4
add1add3(1) // 5
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
let double = { x in 2 * x }
let square = { x in x * x }
let doubleSquare = double >>> square
doubleSquare(5) // returns 500
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(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: left
higherThan: AdditionPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
digest.update(buffer, byteCount: bytesRead)
}
}
return digest.finalize()
}### 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
digest.update(buffer, byteCount: bytesRead)
}
}
return digest.finalize()
}
```var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
guard bytesRead > 0 else { break }
digest.update(buffer: buffer, byteCount: bytesRead)
}
return digest.finalize()
}### 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
guard bytesRead > 0 else { break }
digest.update(buffer: buffer, byteCount: bytesRead)
}
return digest.finalize()
}
```var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
guard bytesRead > 0 else { break }
hash.combine(bytes: buffer, count: bytesRead)
}
return 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
guard bytesRead > 0 else { break }
hash.combine(bytes: buffer, count: bytesRead)
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var read = 0
while inputStream.hasBytesAvailable {
read = inputStream.read(buffer, maxLength: bufferSize)
digest.update(buffer, byteCount: read)
}
return digest.finalize()
}### 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var read = 0
while inputStream.hasBytesAvailable {
read = inputStream.read(buffer, maxLength: bufferSize)
digest.update(buffer, byteCount: read)
}
return digest.finalize()
}
```var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
digest.update(buffer, byteCount: bytesRead)
}
return digest.finalize()
}### 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var digest = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
digest.update(buffer, byteCount: bytesRead)
}
return digest.finalize()
}
```var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hash.combine(bytes: buffer, count: bytesRead)
}
}
return 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hash.combine(bytes: buffer, count: bytesRead)
}
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var read = inputStream.read(buffer, maxLength: bufferSize)
while read > 0 {
hash.combine(buffer: buffer, count: read)
read = inputStream.read(buffer, maxLength: bufferSize)
}
return 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var read = inputStream.read(buffer, maxLength: bufferSize)
while read > 0 {
hash.combine(buffer: buffer, count: read)
read = inputStream.read(buffer, maxLength: bufferSize)
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
guard bytesRead > 0 else { continue }
hash.combine(buffer, bytesRead: bytesRead)
}
return 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
guard bytesRead > 0 else { continue }
hash.combine(buffer, bytesRead: bytesRead)
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var read = inputStream.read(buffer, maxLength: bufferSize)
while read > 0 {
hash.combine(buffer: buffer, count: read)
read = inputStream.read(buffer, maxLength: bufferSize)
}
return 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var read = inputStream.read(buffer, maxLength: bufferSize)
while read > 0 {
hash.combine(buffer: buffer, count: read)
read = inputStream.read(buffer, maxLength: bufferSize)
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hash.combine(buffer, bytesRead: bytesRead)
}
}
return 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 {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hash = SHA256Digest()
var bytesRead = 0
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hash.combine(buffer, bytesRead: bytesRead)
}
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerstypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes = [Int8](repeating: 0, count: 16)
for i in 0..<16 {
bytes[i] = tuple16[i]
}
self.init(bytes: bytes, 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) {
var bytes = [Int8](repeating: 0, count: 16)
for i in 0..<16 {
bytes[i] = tuple16[i]
}
self.init(bytes: bytes, encoding: .utf8)
}
}
```bytes[i] = tuple16[i] // cannot access element using subscript for tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)'); use '.' notation insteadself.init(bytes: bytes, encoding: .utf8) // type of expression is ambiguous without a type annotationtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
string += tuple16[i]
}
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) {
var string = ""
for i in 0..<16 {
string += tuple16[i]
}
self = string
}
}
```string += tuple16[i] // cannot access element using subscript for tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)'); use '.' notation insteadtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes = [Int8](repeating: 0, count: 16)
for i in 0..<16 {
bytes[i] = tuple16[i]
}
self.init(bytes: &bytes, 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) {
var bytes = [Int8](repeating: 0, count: 16)
for i in 0..<16 {
bytes[i] = tuple16[i]
}
self.init(bytes: &bytes, encoding: .utf8)
}
}
```bytes[i] = tuple16[i] // cannot access element using subscript for tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)'); use '.' notation insteadself.init(bytes: &bytes, encoding: .utf8) // type of expression is ambiguous without a type annotationtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(Int(tuple16.0))!))
tuple16.0 = tuple16.1
tuple16.1 = tuple16.2
tuple16.2 = tuple16.3
tuple16.3 = tuple16.4
tuple16.4 = tuple16.5
tuple16.5 = tuple16.6
tuple16.6 = tuple16.7
tuple16.7 = tuple16.8
tuple16.8 = tuple16.9
tuple16.9 = tuple16.10
tuple16.10 = tuple16.11
tuple16.11 = tuple16.12
tuple16.12 = tuple16.13
tuple16.13 = tuple16.14
tuple16.14 = tuple16.15
tuple16.15 = 0
}
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) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(Int(tuple16.0))!))
tuple16.0 = tuple16.1
tuple16.1 = tuple16.2
tuple16.2 = tuple16.3
tuple16.3 = tuple16.4
tuple16.4 = tuple16.5
tuple16.5 = tuple16.6
tuple16.6 = tuple16.7
tuple16.7 = tuple16.8
tuple16.8 = tuple16.9
tuple16.9 = tuple16.10
tuple16.10 = tuple16.11
tuple16.11 = tuple16.12
tuple16.12 = tuple16.13
tuple16.13 = tuple16.14
tuple16.14 = tuple16.15
tuple16.15 = 0
}
self = string
}
}
```tuple16.0 = tuple16.1 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.1 = tuple16.2 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.2 = tuple16.3 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.3 = tuple16.4 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.4 = tuple16.5 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.5 = tuple16.6 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.6 = tuple16.7 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.7 = tuple16.8 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.8 = tuple16.9 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.9 = tuple16.10 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.10 = tuple16.11 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.11 = tuple16.12 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.12 = tuple16.13 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.13 = tuple16.14 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.14 = tuple16.15 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.15 = 0 // cannot assign to property: 'tuple16' is a 'let' constanttypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(tuple16.0)))
tuple16 = (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, tuple16.16)
}
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) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(tuple16.0)))
tuple16 = (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, tuple16.16)
}
self = string
}
}
```string.append(Character(UnicodeScalar(tuple16.0))) // no exact matches in call to initializertuple16 = (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, tuple16.16) // cannot assign to value: 'tuple16' is a 'let' constanttuple16 = (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, tuple16.16) // value of tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') has no member '16'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(Int(tuple16.0))!))
tuple16.0 = tuple16.1
tuple16.1 = tuple16.2
tuple16.2 = tuple16.3
tuple16.3 = tuple16.4
tuple16.4 = tuple16.5
tuple16.5 = tuple16.6
tuple16.6 = tuple16.7
tuple16.7 = tuple16.8
tuple16.8 = tuple16.9
tuple16.9 = tuple16.10
tuple16.10 = tuple16.11
tuple16.11 = tuple16.12
tuple16.12 = tuple16.13
tuple16.13 = tuple16.14
tuple16.14 = tuple16.15
tuple16.15 = tuple16.16
}
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) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(Int(tuple16.0))!))
tuple16.0 = tuple16.1
tuple16.1 = tuple16.2
tuple16.2 = tuple16.3
tuple16.3 = tuple16.4
tuple16.4 = tuple16.5
tuple16.5 = tuple16.6
tuple16.6 = tuple16.7
tuple16.7 = tuple16.8
tuple16.8 = tuple16.9
tuple16.9 = tuple16.10
tuple16.10 = tuple16.11
tuple16.11 = tuple16.12
tuple16.12 = tuple16.13
tuple16.13 = tuple16.14
tuple16.14 = tuple16.15
tuple16.15 = tuple16.16
}
self = string
}
}
```tuple16.0 = tuple16.1 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.1 = tuple16.2 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.2 = tuple16.3 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.3 = tuple16.4 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.4 = tuple16.5 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.5 = tuple16.6 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.6 = tuple16.7 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.7 = tuple16.8 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.8 = tuple16.9 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.9 = tuple16.10 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.10 = tuple16.11 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.11 = tuple16.12 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.12 = tuple16.13 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.13 = tuple16.14 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.14 = tuple16.15 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.15 = tuple16.16 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.15 = tuple16.16 // value of tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') has no member '16'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string += String(tuple16.0)
tuple16.0 = tuple16.1
tuple16.1 = tuple16.2
tuple16.2 = tuple16.3
tuple16.3 = tuple16.4
tuple16.4 = tuple16.5
tuple16.5 = tuple16.6
tuple16.6 = tuple16.7
tuple16.7 = tuple16.8
tuple16.8 = tuple16.9
tuple16.9 = tuple16.10
tuple16.10 = tuple16.11
tuple16.11 = tuple16.12
tuple16.12 = tuple16.13
tuple16.13 = tuple16.14
tuple16.14 = tuple16.15
tuple16.15 = 0
}
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) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string += String(tuple16.0)
tuple16.0 = tuple16.1
tuple16.1 = tuple16.2
tuple16.2 = tuple16.3
tuple16.3 = tuple16.4
tuple16.4 = tuple16.5
tuple16.5 = tuple16.6
tuple16.6 = tuple16.7
tuple16.7 = tuple16.8
tuple16.8 = tuple16.9
tuple16.9 = tuple16.10
tuple16.10 = tuple16.11
tuple16.11 = tuple16.12
tuple16.12 = tuple16.13
tuple16.13 = tuple16.14
tuple16.14 = tuple16.15
tuple16.15 = 0
}
self = string
}
}
```tuple16.0 = tuple16.1 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.1 = tuple16.2 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.2 = tuple16.3 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.3 = tuple16.4 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.4 = tuple16.5 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.5 = tuple16.6 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.6 = tuple16.7 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.7 = tuple16.8 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.8 = tuple16.9 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.9 = tuple16.10 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.10 = tuple16.11 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.11 = tuple16.12 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.12 = tuple16.13 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.13 = tuple16.14 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.14 = tuple16.15 // cannot assign to property: 'tuple16' is a 'let' constanttuple16.15 = 0 // cannot assign to property: 'tuple16' is a 'let' constanttypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var cString = [CChar](repeating: 0, count: 17)
for i in 0..<16 {
cString[i] = CChar(tuple16[i])
}
cString[16] = 0
self.init(cString: cString)
}
}### 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) {
var cString = [CChar](repeating: 0, count: 17)
for i in 0..<16 {
cString[i] = CChar(tuple16[i])
}
cString[16] = 0
self.init(cString: cString)
}
}
```cString[i] = CChar(tuple16[i]) // cannot access element using subscript for tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)'); use '.' notation insteadtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(Int(tuple16.0))!))
tuple16.0 = tuple16.1
}
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) {
var string = ""
for i in 0..<16 {
if tuple16.0 == 0 {
break
}
string.append(Character(UnicodeScalar(Int(tuple16.0))!))
tuple16.0 = tuple16.1
}
self = string
}
}
```tuple16.0 = tuple16.1 // cannot assign to property: 'tuple16' is a 'let' constanttypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var string = ""
for i in 0..<16 {
if tuple16[i] != 0 {
string += Character(UnicodeScalar(tuple16[i]))
} else {
break
}
}
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) {
var string = ""
for i in 0..<16 {
if tuple16[i] != 0 {
string += Character(UnicodeScalar(tuple16[i]))
} else {
break
}
}
self = string
}
}
```if tuple16[i] != 0 { // cannot access element using subscript for tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)'); use '.' notation insteadstring += Character(UnicodeScalar(tuple16[i])) // cannot convert value of type 'Character' to expected argument type 'String'string += Character(UnicodeScalar(tuple16[i])) // cannot access element using subscript for tuple type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)'); use '.' notation insteadimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'bytesPerRow'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // cannot convert value of type 'Duration' to expected argument type 'Int'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false }
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else { return false }
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false }
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else { return false }
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false } // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false } // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false } // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false } // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false } // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { return false } // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'bytesPerRow'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // cannot convert value of type 'Duration' to expected argument type 'Int'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType {
return false
}
let lhsBytes = CVPixelBufferGetBaseAddress(lhs)
let rhsBytes = CVPixelBufferGetBaseAddress(rhs)
let lhsLength = CVPixelBufferGetDataSize(lhs)
let rhsLength = CVPixelBufferGetDataSize(rhs)
if lhsLength != rhsLength {
return false
}
return memcmp(lhsBytes, rhsBytes, lhsLength) == 0
}### 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.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType {
return false
}
let lhsBytes = CVPixelBufferGetBaseAddress(lhs)
let rhsBytes = CVPixelBufferGetBaseAddress(rhs)
let lhsLength = CVPixelBufferGetDataSize(lhs)
let rhsLength = CVPixelBufferGetDataSize(rhs)
if lhsLength != rhsLength {
return false
}
return memcmp(lhsBytes, rhsBytes, lhsLength) == 0
}
```if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'bytesPerRow'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // cannot convert value of type 'Duration' to expected argument type 'Int'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'bytesPerRow'return memcmp(lhsData, rhsData, lhs.bytesPerRow * lhs.height) == 0 // cannot convert value of type 'Duration' to expected argument type 'Int'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType {
return false
}
let lhsData = lhs.data()
let rhsData = rhs.data()
let lhsBytesPerRow = lhs.bytesPerRow
let rhsBytesPerRow = rhs.bytesPerRow
for y in 0..<lhs.height {
for x in 0..<lhs.width {
let lhsIndex = y * lhsBytesPerRow + x * 4
let rhsIndex = y * rhsBytesPerRow + x * 4
if lhsData[lhsIndex] != rhsData[rhsIndex] || lhsData[lhsIndex + 1] != rhsData[rhsIndex + 1] || lhsData[lhsIndex + 2] != rhsData[rhsIndex + 2] || lhsData[lhsIndex + 3] != rhsData[rhsIndex + 3] {
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.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType {
return false
}
let lhsData = lhs.data()
let rhsData = rhs.data()
let lhsBytesPerRow = lhs.bytesPerRow
let rhsBytesPerRow = rhs.bytesPerRow
for y in 0..<lhs.height {
for x in 0..<lhs.width {
let lhsIndex = y * lhsBytesPerRow + x * 4
let rhsIndex = y * rhsBytesPerRow + x * 4
if lhsData[lhsIndex] != rhsData[rhsIndex] || lhsData[lhsIndex + 1] != rhsData[rhsIndex + 1] || lhsData[lhsIndex + 2] != rhsData[rhsIndex + 2] || lhsData[lhsIndex + 3] != rhsData[rhsIndex + 3] {
return false
}
}
}
return true
}
```if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'if lhs.width != rhs.width || lhs.height != rhs.height || lhs.pixelFormatType != rhs.pixelFormatType { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'let lhsData = lhs.data() // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'data'let rhsData = rhs.data() // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'data'let lhsBytesPerRow = lhs.bytesPerRow // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'bytesPerRow'let rhsBytesPerRow = rhs.bytesPerRow // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'bytesPerRow'for y in 0..<lhs.height { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'for x in 0..<lhs.width { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in
rhsData.withMemoryRebound(to: UInt8.self, capacity: rhs.width * rhs.height) { rhsData in
return memcmp(lhsData, rhsData, lhs.width * lhs.height) == 0
}
} else {
return false
}
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in
rhsData.withMemoryRebound(to: UInt8.self, capacity: rhs.width * rhs.height) { rhsData in
return memcmp(lhsData, rhsData, lhs.width * lhs.height) == 0
}
} else {
return false
}
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // expression of type 'UnsafeMutableRawPointer' is unusedguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // cannot convert value of type 'Duration' to expected argument type 'Int'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // expected 'else' after 'guard' conditionguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // consecutive statements on a line must be separated by ';'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // expected expressionguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsData in // missing argument for parameter #3 in call} else { // expected expression} else { // consecutive statements on a line must be separated by ';'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
let lhsData = CVPixelBufferGetBaseAddress(lhs)
let rhsData = CVPixelBufferGetBaseAddress(rhs)
guard lhsData != nil, rhsData != nil else {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
guard lhsBytesPerRow == rhsBytesPerRow else {
return false
}
let lhsDataLength = lhsBytesPerRow * lhs.height
guard lhsDataLength == rhsBytesPerRow * rhs.height else {
return false
}
let lhsDataPtr = UnsafeMutableRawPointer(mutating: lhsData)
let rhsDataPtr = UnsafeMutableRawPointer(mutating: rhsData)
return memcmp(lhsDataPtr, rhsDataPtr, lhsDataLength) == 0
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
let lhsData = CVPixelBufferGetBaseAddress(lhs)
let rhsData = CVPixelBufferGetBaseAddress(rhs)
guard lhsData != nil, rhsData != nil else {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
guard lhsBytesPerRow == rhsBytesPerRow else {
return false
}
let lhsDataLength = lhsBytesPerRow * lhs.height
guard lhsDataLength == rhsBytesPerRow * rhs.height else {
return false
}
let lhsDataPtr = UnsafeMutableRawPointer(mutating: lhsData)
let rhsDataPtr = UnsafeMutableRawPointer(mutating: rhsData)
return memcmp(lhsDataPtr, rhsDataPtr, lhsDataLength) == 0
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'let lhsDataLength = lhsBytesPerRow * lhs.height // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhsDataLength == rhsBytesPerRow * rhs.height else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in
rhsData.withMemoryRebound(to: UInt8.self, capacity: rhs.width * rhs.height) { rhsBuffer in
return memcmp(lhsBuffer, rhsBuffer, lhs.width * lhs.height) == 0
}
} else {
return false
}
}### 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 {
guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else {
return false
}
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in
rhsData.withMemoryRebound(to: UInt8.self, capacity: rhs.width * rhs.height) { rhsBuffer in
return memcmp(lhsBuffer, rhsBuffer, lhs.width * lhs.height) == 0
}
} else {
return false
}
}
```guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhs.width == rhs.width, lhs.height == rhs.height, lhs.pixelFormatType == rhs.pixelFormatType else { // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // cannot find 'lhsBuffer' in scopeguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // expected 'else' after 'guard' conditionguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // missing argument for parameter #3 in callguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // expected expressionguard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // cannot convert value of type 'Duration' to expected argument type 'Int'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // consecutive statements on a line must be separated by ';'guard lhsData.withMemoryRebound(to: UInt8.self, capacity: lhs.width * lhs.height) { lhsBuffer in // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'} else { // expected expression} else { // consecutive statements on a line must be separated by ';'import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress
}### 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.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress
}
```return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'baseAddress'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'pixelFormatType'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'height'return lhs.width == rhs.width && lhs.height == rhs.height && lhs.pixelFormatType == rhs.pixelFormatType && lhs.baseAddress == rhs.baseAddress // value of type 'CVPixelBuffer' (aka 'CVBuffer') has no member 'width'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
let itemsPtr = UnsafeMutablePointer<PrivateItem>(mutating: items)
for i in 0..<count {
result[i] = PublicItem(value: itemsPtr[i].value)
}
return UnsafeMutableBufferPointer(start: result, count: count).move()
}### 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] {
let count = items.count
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
let itemsPtr = UnsafeMutablePointer<PrivateItem>(mutating: items)
for i in 0..<count {
result[i] = PublicItem(value: itemsPtr[i].value)
}
return UnsafeMutableBufferPointer(start: result, count: count).move()
}
```let itemsPtr = UnsafeMutablePointer<PrivateItem>(mutating: items) // initialization of 'UnsafeMutablePointer<PrivateItem>' results in a dangling pointerresult[i] = PublicItem(value: itemsPtr[i].value) // 'value' is inaccessible due to 'private' protection levelreturn UnsafeMutableBufferPointer(start: result, count: count).move() // value of type 'UnsafeMutableBufferPointer<PublicItem>' has no member 'move'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
result.initialize(to: PublicItem(value: 0), count: count)
memcpy(result, buffer, count * MemoryLayout<PublicItem>.stride)
buffer.deinitialize(count: count)
buffer.deallocate()
return UnsafeBufferPointer(start: result, count: count).map { $0 }
}### 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] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
result.initialize(to: PublicItem(value: 0), count: count)
memcpy(result, buffer, count * MemoryLayout<PublicItem>.stride)
buffer.deinitialize(count: count)
buffer.deallocate()
return UnsafeBufferPointer(start: result, count: count).map { $0 }
}
```result.initialize(to: PublicItem(value: 0), count: count) // 'initialize(to:count:)' has been renamed to 'initialize(repeating:count:)'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return withUnsafePointer(to: &items) {
$0.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
}### 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 withUnsafePointer(to: &items) {
$0.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
}
```return withUnsafePointer(to: &items) { // cannot pass immutable value as inout argument: 'items' is a 'let' constantstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let publicBuffer = buffer.withMemoryRebound(to: PublicItem.self, capacity: count) {
$0
}
buffer.deinitialize(count: count)
buffer.deallocate(capacity: count)
return Array(UnsafeBufferPointer(start: publicBuffer, count: count))
}### 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] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let publicBuffer = buffer.withMemoryRebound(to: PublicItem.self, capacity: count) {
$0
}
buffer.deinitialize(count: count)
buffer.deallocate(capacity: count)
return Array(UnsafeBufferPointer(start: publicBuffer, count: count))
}
```buffer.deallocate(capacity: count) // 'deallocate(capacity:)' is unavailable: Swift currently only supports freeing entire heap blocks, use deallocate() insteadstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
let itemsPtr = UnsafeMutablePointer<PrivateItem>(mutating: items)
let resultPtr = UnsafeMutablePointer<PublicItem>(mutating: result)
for i in 0..<count {
resultPtr[i] = PublicItem(value: itemsPtr[i].value)
}
return UnsafeMutableBufferPointer(start: result, count: count).move()
}### 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] {
let count = items.count
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
let itemsPtr = UnsafeMutablePointer<PrivateItem>(mutating: items)
let resultPtr = UnsafeMutablePointer<PublicItem>(mutating: result)
for i in 0..<count {
resultPtr[i] = PublicItem(value: itemsPtr[i].value)
}
return UnsafeMutableBufferPointer(start: result, count: count).move()
}
```let itemsPtr = UnsafeMutablePointer<PrivateItem>(mutating: items) // initialization of 'UnsafeMutablePointer<PrivateItem>' results in a dangling pointerresultPtr[i] = PublicItem(value: itemsPtr[i].value) // 'value' is inaccessible due to 'private' protection levelreturn UnsafeMutableBufferPointer(start: result, count: count).move() // value of type 'UnsafeMutableBufferPointer<PublicItem>' has no member 'move'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
result.initialize(to: PublicItem(value: 0), count: count)
for i in 0..<count {
result[i].value = buffer[i].value
}
buffer.deinitialize(count: count)
buffer.deallocate(capacity: count)
return UnsafeBufferPointer(start: result, count: count).map { $0 }
}### 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] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
result.initialize(to: PublicItem(value: 0), count: count)
for i in 0..<count {
result[i].value = buffer[i].value
}
buffer.deinitialize(count: count)
buffer.deallocate(capacity: count)
return UnsafeBufferPointer(start: result, count: count).map { $0 }
}
```result.initialize(to: PublicItem(value: 0), count: count) // 'initialize(to:count:)' has been renamed to 'initialize(repeating:count:)'result[i].value = buffer[i].value // 'value' is inaccessible due to 'private' protection levelresult[i].value = buffer[i].value // cannot assign to property: 'value' is a 'let' constantbuffer.deallocate(capacity: count) // 'deallocate(capacity:)' is unavailable: Swift currently only supports freeing entire heap blocks, use deallocate() insteadstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = buffer.withMemoryRebound(to: PublicItem.self, capacity: count) {
$0.map { PublicItem(value: $0.value) }
}
buffer.deinitialize(count: count)
buffer.deallocate()
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] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = buffer.withMemoryRebound(to: PublicItem.self, capacity: count) {
$0.map { PublicItem(value: $0.value) }
}
buffer.deinitialize(count: count)
buffer.deallocate()
return result
}
```$0.map { PublicItem(value: $0.value) } // value of type 'UnsafeMutablePointer<PublicItem>' has no member 'map'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
for i in 0..<count {
result[i] = PublicItem(value: buffer[i].value)
}
buffer.deinitialize(count: count)
buffer.deallocate(capacity: count)
return UnsafeBufferPointer(start: result, count: count).map { $0 }
}### 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] {
let count = items.count
let buffer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: count)
buffer.initialize(from: items, count: count)
let result = UnsafeMutablePointer<PublicItem>.allocate(capacity: count)
for i in 0..<count {
result[i] = PublicItem(value: buffer[i].value)
}
buffer.deinitialize(count: count)
buffer.deallocate(capacity: count)
return UnsafeBufferPointer(start: result, count: count).map { $0 }
}
```result[i] = PublicItem(value: buffer[i].value) // 'value' is inaccessible due to 'private' protection levelbuffer.deallocate(capacity: count) // 'deallocate(capacity:)' is unavailable: Swift currently only supports freeing entire heap blocks, use deallocate() insteadstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return withUnsafePointer(to: items) {
$0.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
}### 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 withUnsafePointer(to: items) {
$0.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
}
``` // XCTAssertEqual failed: ([0, 1, 2]) is not equal to ([105553172119808, 6137736544, 105553172119808])struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return withUnsafePointer(to: items) {
$0.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
}### 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 withUnsafePointer(to: items) {
$0.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
}
``` // XCTAssertEqual failed: ([0, 1, 2]) is not equal to ([105553143906432, 6122843488, 105553143906432])enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
var lhsComponent = 0
var rhsComponent = 0
while lhsComponent < lhsComponents.count && rhsComponent < rhsComponents.count {
let lhsComponent = Int(lhsComponents[lhsComponent]) ?? 0
let rhsComponent = Int(rhsComponents[rhsComponent]) ?? 0
if lhsComponent < rhsComponent {
return .orderedAscending
} else if lhsComponent > rhsComponent {
return .orderedDescending
}
lhsComponent += 1
rhsComponent += 1
}
if lhsComponent < rhsComponents.count {
return .orderedAscending
} else if rhsComponent < lhsComponents.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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
var lhsComponent = 0
var rhsComponent = 0
while lhsComponent < lhsComponents.count && rhsComponent < rhsComponents.count {
let lhsComponent = Int(lhsComponents[lhsComponent]) ?? 0
let rhsComponent = Int(rhsComponents[rhsComponent]) ?? 0
if lhsComponent < rhsComponent {
return .orderedAscending
} else if lhsComponent > rhsComponent {
return .orderedDescending
}
lhsComponent += 1
rhsComponent += 1
}
if lhsComponent < rhsComponents.count {
return .orderedAscending
} else if rhsComponent < lhsComponents.count {
return .orderedDescending
}
return .orderedSame
}
```lhsComponent += 1 // left side of mutating operator isn't mutable: 'lhsComponent' is a 'let' constantrhsComponent += 1 // left side of mutating operator isn't mutable: 'rhsComponent' is a 'let' constantenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let minCount = min(lhsCount, rhsCount)
for i in 0..<minCount {
let lhsComponent = lhsComponents[i]
let rhsComponent = rhsComponents[i]
if lhsComponent != rhsComponent {
if lhsComponent.hasPrefix("alpha") && rhsComponent.hasPrefix("beta") {
return .orderedAscending
} else if lhsComponent.hasPrefix("beta") && rhsComponent.hasPrefix("alpha") {
return .orderedDescending
} else {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
} else {
return lhsInt < rhsInt ? .orderedAscending : .orderedDescending
}
}
}
}
if lhsCount == rhsCount {
return .orderedSame
} else {
return lhsCount < rhsCount ? .orderedAscending : .orderedDescending
}
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let minCount = min(lhsCount, rhsCount)
for i in 0..<minCount {
let lhsComponent = lhsComponents[i]
let rhsComponent = rhsComponents[i]
if lhsComponent != rhsComponent {
if lhsComponent.hasPrefix("alpha") && rhsComponent.hasPrefix("beta") {
return .orderedAscending
} else if lhsComponent.hasPrefix("beta") && rhsComponent.hasPrefix("alpha") {
return .orderedDescending
} else {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
} else {
return lhsInt < rhsInt ? .orderedAscending : .orderedDescending
}
}
}
}
if lhsCount == rhsCount {
return .orderedSame
} else {
return lhsCount < rhsCount ? .orderedAscending : .orderedDescending
}
}
```return lhsInt < rhsInt ? .orderedAscending : .orderedDescending // value of optional type 'Int?' must be unwrapped to a value of type 'Int'return lhsInt < rhsInt ? .orderedAscending : .orderedDescending // value of optional type 'Int?' must be unwrapped to a value of type 'Int'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
for index in 0..<maxCount {
let lhsComponent = index < lhsCount ? lhsComponents[index] : "0"
let rhsComponent = index < rhsCount ? rhsComponents[index] : "0"
if lhsComponent != rhsComponent {
let lhsInt = Int(lhsComponent) ?? 0
let rhsInt = Int(rhsComponent) ?? 0
if lhsInt > rhsInt {
return .orderedDescending
} else if lhsInt < rhsInt {
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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
for index in 0..<maxCount {
let lhsComponent = index < lhsCount ? lhsComponents[index] : "0"
let rhsComponent = index < rhsCount ? rhsComponents[index] : "0"
if lhsComponent != rhsComponent {
let lhsInt = Int(lhsComponent) ?? 0
let rhsInt = Int(rhsComponent) ?? 0
if lhsInt > rhsInt {
return .orderedDescending
} else if lhsInt < rhsInt {
return .orderedAscending
}
}
}
return .orderedSame
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
var result = ComparisonResult.orderedSame
for i in 0..<maxCount {
let lhsComponent = i < lhsCount ? lhsComponents[i] : "0"
let rhsComponent = i < rhsCount ? rhsComponents[i] : "0"
if lhsComponent != rhsComponent {
if let lhsNumeric = Int(lhsComponent), let rhsNumeric = Int(rhsComponent) {
result = lhsNumeric < rhsNumeric ? .orderedAscending : .orderedDescending
} else if lhsComponent.hasPrefix("alpha") && rhsComponent.hasPrefix("beta") {
result = .orderedAscending
} else if lhsComponent.hasPrefix("beta") && rhsComponent.hasPrefix("alpha") {
result = .orderedDescending
} else if lhsComponent.hasPrefix("alpha") {
result = .orderedAscending
} else if rhsComponent.hasPrefix("alpha") {
result = .orderedDescending
} else if lhsComponent.hasPrefix("beta") {
result = .orderedAscending
} else if rhsComponent.hasPrefix("beta") {
result = .orderedDescending
} else {
result = lhsComponent < rhsComponent ? .orderedAscending : .orderedDescending
}
break
}
}
return result
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
var result = ComparisonResult.orderedSame
for i in 0..<maxCount {
let lhsComponent = i < lhsCount ? lhsComponents[i] : "0"
let rhsComponent = i < rhsCount ? rhsComponents[i] : "0"
if lhsComponent != rhsComponent {
if let lhsNumeric = Int(lhsComponent), let rhsNumeric = Int(rhsComponent) {
result = lhsNumeric < rhsNumeric ? .orderedAscending : .orderedDescending
} else if lhsComponent.hasPrefix("alpha") && rhsComponent.hasPrefix("beta") {
result = .orderedAscending
} else if lhsComponent.hasPrefix("beta") && rhsComponent.hasPrefix("alpha") {
result = .orderedDescending
} else if lhsComponent.hasPrefix("alpha") {
result = .orderedAscending
} else if rhsComponent.hasPrefix("alpha") {
result = .orderedDescending
} else if lhsComponent.hasPrefix("beta") {
result = .orderedAscending
} else if rhsComponent.hasPrefix("beta") {
result = .orderedDescending
} else {
result = lhsComponent < rhsComponent ? .orderedAscending : .orderedDescending
}
break
}
}
return result
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if lhsComponent != rhsComponent {
return lhsComponent < rhsComponent ? .orderedAscending : .orderedDescending
}
}
if lhsComponents.count == rhsComponents.count {
return .orderedSame
} else {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if lhsComponent != rhsComponent {
return lhsComponent < rhsComponent ? .orderedAscending : .orderedDescending
}
}
if lhsComponents.count == rhsComponents.count {
return .orderedSame
} else {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
} else if lhsInt == nil {
return .orderedAscending
} else if rhsInt == nil {
return .orderedDescending
} else {
return lhsInt! < rhsInt! ? .orderedAscending : .orderedDescending
}
}
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
} else if lhsInt == nil {
return .orderedAscending
} else if rhsInt == nil {
return .orderedDescending
} else {
return lhsInt! < rhsInt! ? .orderedAscending : .orderedDescending
}
}
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
var result: ComparisonResult = .orderedSame
for i in 0..<maxCount {
let lhsComponent = i < lhsCount ? lhsComponents[i] : "0"
let rhsComponent = i < rhsCount ? rhsComponents[i] : "0"
let lhsIsAlpha = lhsComponent.hasSuffix("a") || lhsComponent.hasSuffix("b")
let rhsIsAlpha = rhsComponent.hasSuffix("a") || rhsComponent.hasSuffix("b")
if lhsIsAlpha && !rhsIsAlpha {
result = .orderedDescending
} else if !lhsIsAlpha && rhsIsAlpha {
result = .orderedAscending
} else if lhsComponent != rhsComponent {
result = lhsComponent > rhsComponent ? .orderedDescending : .orderedAscending
}
if result != .orderedSame {
break
}
}
return result
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
var result: ComparisonResult = .orderedSame
for i in 0..<maxCount {
let lhsComponent = i < lhsCount ? lhsComponents[i] : "0"
let rhsComponent = i < rhsCount ? rhsComponents[i] : "0"
let lhsIsAlpha = lhsComponent.hasSuffix("a") || lhsComponent.hasSuffix("b")
let rhsIsAlpha = rhsComponent.hasSuffix("a") || rhsComponent.hasSuffix("b")
if lhsIsAlpha && !rhsIsAlpha {
result = .orderedDescending
} else if !lhsIsAlpha && rhsIsAlpha {
result = .orderedAscending
} else if lhsComponent != rhsComponent {
result = lhsComponent > rhsComponent ? .orderedDescending : .orderedAscending
}
if result != .orderedSame {
break
}
}
return result
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
} else if lhsInt == nil {
return .orderedAscending
} else if rhsInt == nil {
return .orderedDescending
} else {
return lhsInt! < rhsInt! ? .orderedAscending : .orderedDescending
}
}
if lhsComponents.count == rhsComponents.count {
return .orderedSame
} else {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
} else if lhsInt == nil {
return .orderedAscending
} else if rhsInt == nil {
return .orderedDescending
} else {
return lhsInt! < rhsInt! ? .orderedAscending : .orderedDescending
}
}
if lhsComponents.count == rhsComponents.count {
return .orderedSame
} else {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
}
if lhsInt == nil {
return .orderedAscending
}
if rhsInt == nil {
return .orderedDescending
}
return lhsInt! < rhsInt! ? .orderedAscending : .orderedDescending
}
if lhsComponents.count == rhsComponents.count {
return .orderedSame
}
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsInt = Int(lhsComponent)
let rhsInt = Int(rhsComponent)
if lhsInt == rhsInt {
continue
}
if lhsInt == nil {
return .orderedAscending
}
if rhsInt == nil {
return .orderedDescending
}
return lhsInt! < rhsInt! ? .orderedAscending : .orderedDescending
}
if lhsComponents.count == rhsComponents.count {
return .orderedSame
}
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
``` // XCTAssertTrue failedenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
var result: ComparisonResult = .orderedSame
for i in 0..<maxCount {
let lhsComponent = i < lhsCount ? lhsComponents[i] : "0"
let rhsComponent = i < rhsCount ? rhsComponents[i] : "0"
if lhsComponent != rhsComponent {
if lhsComponent.hasPrefix("alpha") && rhsComponent.hasPrefix("beta") {
result = .orderedAscending
} else if lhsComponent.hasPrefix("beta") && rhsComponent.hasPrefix("alpha") {
result = .orderedDescending
} else {
let lhsVersion = Int(lhsComponent) ?? 0
let rhsVersion = Int(rhsComponent) ?? 0
if lhsVersion < rhsVersion {
result = .orderedAscending
} else if lhsVersion > rhsVersion {
result = .orderedDescending
}
}
break
}
}
return result
}### 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 lhsComponents = lhs.components(separatedBy: ".")
let rhsComponents = rhs.components(separatedBy: ".")
let lhsCount = lhsComponents.count
let rhsCount = rhsComponents.count
let maxCount = max(lhsCount, rhsCount)
var result: ComparisonResult = .orderedSame
for i in 0..<maxCount {
let lhsComponent = i < lhsCount ? lhsComponents[i] : "0"
let rhsComponent = i < rhsCount ? rhsComponents[i] : "0"
if lhsComponent != rhsComponent {
if lhsComponent.hasPrefix("alpha") && rhsComponent.hasPrefix("beta") {
result = .orderedAscending
} else if lhsComponent.hasPrefix("beta") && rhsComponent.hasPrefix("alpha") {
result = .orderedDescending
} else {
let lhsVersion = Int(lhsComponent) ?? 0
let rhsVersion = Int(rhsComponent) ?? 0
if lhsVersion < rhsVersion {
result = .orderedAscending
} else if lhsVersion > rhsVersion {
result = .orderedDescending
}
}
break
}
}
return result
}
``` // XCTAssertTrue failed