Metadata
| Key | Value |
|---|---|
| engine | modal |
| 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return json
} catch {
throw ParsingError.internalError(error)
}
}
```typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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 {
guard let json = try JSONSerialization.jsonObject(with: data) as? JSON else {
throw ParsingError.invalidInput
}
return 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):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
let tree = HTMLNode.element(
"div",
children: [
.element(
"a",
attributes: ["href": "swifteval"],
children: [
.text("SwiftEval")
]
)
]
)
generate(tree) // "<div><a href="swifteval">SwiftEval</a></div>"
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
let tree: HTMLNode = .element(
"div",
children: [
.element(
"a",
attributes: ["href": "swifteval"],
children: [
.text("SwiftEval")
]
)
]
)
generate(tree) // "<div><a href="swifteval">SwiftEval</a></div>"
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
let tree: HTMLNode = .element(
"div",
children: [
.element(
"a",
attributes: ["href": "swifteval"],
children: [
.text("SwiftEval")
]
)
]
)
print(generate(tree))
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0.key)=\"\($0.value)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map(generate).joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
let tree: HTMLNode = .element(
"div",
children: [
.element(
"a",
attributes: ["href": "swifteval"],
children: [
.text("SwiftEval")
]
)
]
)
print(generate(tree))
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
let attributesString = attributes.map { "\($0)=\"\($1)\"" }.joined(separator: " ")
let childrenString = children.map { generate($0) }.joined()
return "<\(name)\(attributesString.isEmpty ? "" : " ")\(attributesString)>\(childrenString)</\(name)>"
}
}
```enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.split(separator: " ").map { String($0) }
var stack = [Double]()
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else { throw CalculateError.invalidInput }
let operand2 = stack.removeLast()
let operand1 = stack.removeLast()
stack.append(operation.apply(operand1, operand2))
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.first!
}
enum Operation: String {
case add = "+"
case subtract = "-"
case multiply = "*"
case divide = "/"
func apply(_ operand1: Double, _ operand2: Double) -> Double {
switch self {
case .add:
return operand1 + operand2
case .subtract:
return operand1 - operand2
case .multiply:
return operand1 * operand2
case .divide:
return operand1 / operand2
}
}
}### 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: " ").map { String($0) }
var stack = [Double]()
for token in tokens {
if let number = Double(token) {
stack.append(number)
} else if let operation = Operation(rawValue: token) {
guard stack.count >= 2 else { throw CalculateError.invalidInput }
let operand2 = stack.removeLast()
let operand1 = stack.removeLast()
stack.append(operation.apply(operand1, operand2))
} else {
throw CalculateError.invalidInput
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.first!
}
enum Operation: String {
case add = "+"
case subtract = "-"
case multiply = "*"
case divide = "/"
func apply(_ operand1: Double, _ operand2: Double) -> Double {
switch self {
case .add:
return operand1 + operand2
case .subtract:
return operand1 - operand2
case .multiply:
return operand1 * operand2
case .divide:
return operand1 / operand2
}
}
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.map { String($0) }
guard tokens.allSatisfy({ "+-*/()".contains($0) }) else { throw CalculateError.invalidInput }
let result = try calculate(tokens)
return result
}
private func calculate(_ tokens: [String]) throws -> Double {
var result = try calculate(tokens, 0)
guard result.1 == tokens.count else { throw CalculateError.invalidInput }
return result.0
}
private func calculate(_ tokens: [String], _ start: Int) throws -> (Double, Int) {
var result = try calculate(tokens, start + 1)
switch tokens[start] {
case "+":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 + right, end)
case "-":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 - right, end)
case "*":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 * right, end)
case "/":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 / right, end)
default:
break
}
return result
}
private func calculate(_ tokens: [String], _ start: Int) throws -> (Double, Int) {
if tokens[start] == "(" {
let (result, end) = try calculate(tokens, start + 1)
guard tokens[end] == ")" else { throw CalculateError.invalidInput }
return (result, end + 1)
} else {
return (Double(tokens[start])!, start + 1)
}
}### 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.map { String($0) }
guard tokens.allSatisfy({ "+-*/()".contains($0) }) else { throw CalculateError.invalidInput }
let result = try calculate(tokens)
return result
}
private func calculate(_ tokens: [String]) throws -> Double {
var result = try calculate(tokens, 0)
guard result.1 == tokens.count else { throw CalculateError.invalidInput }
return result.0
}
private func calculate(_ tokens: [String], _ start: Int) throws -> (Double, Int) {
var result = try calculate(tokens, start + 1)
switch tokens[start] {
case "+":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 + right, end)
case "-":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 - right, end)
case "*":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 * right, end)
case "/":
let (right, end) = try calculate(tokens, result.1)
result = (result.0 / right, end)
default:
break
}
return result
}
private func calculate(_ tokens: [String], _ start: Int) throws -> (Double, Int) {
if tokens[start] == "(" {
let (result, end) = try calculate(tokens, start + 1)
guard tokens[end] == ")" else { throw CalculateError.invalidInput }
return (result, end + 1)
} else {
return (Double(tokens[start])!, start + 1)
}
}
```var result = try calculate(tokens, 0) // variable 'result' was never mutated; consider changing to 'let' constantprivate func calculate(_ tokens: [String], _ start: Int) throws -> (Double, Int) { // invalid redeclaration of 'calculate'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.split(separator: " ")
guard tokens.allSatisfy({ $0.count == 1 && "+-*/()".contains($0) }) else {
throw CalculateError.invalidInput
}
let stack = Stack<Double>()
for token in tokens {
switch token {
case "+":
let a = stack.pop()
let b = stack.pop()
stack.push(a + b)
case "-":
let a = stack.pop()
let b = stack.pop()
stack.push(a - b)
case "*":
let a = stack.pop()
let b = stack.pop()
stack.push(a * b)
case "/":
let a = stack.pop()
let b = stack.pop()
stack.push(a / b)
case "(":
stack.push(0)
case ")":
let a = stack.pop()
let b = stack.pop()
stack.push(a + b)
default:
stack.push(Double(token)!)
}
}
return stack.pop()
}
class Stack<T> {
private var items = [T]()
func push(_ item: T) {
items.append(item)
}
func pop() -> T {
items.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: " ")
guard tokens.allSatisfy({ $0.count == 1 && "+-*/()".contains($0) }) else {
throw CalculateError.invalidInput
}
let stack = Stack<Double>()
for token in tokens {
switch token {
case "+":
let a = stack.pop()
let b = stack.pop()
stack.push(a + b)
case "-":
let a = stack.pop()
let b = stack.pop()
stack.push(a - b)
case "*":
let a = stack.pop()
let b = stack.pop()
stack.push(a * b)
case "/":
let a = stack.pop()
let b = stack.pop()
stack.push(a / b)
case "(":
stack.push(0)
case ")":
let a = stack.pop()
let b = stack.pop()
stack.push(a + b)
default:
stack.push(Double(token)!)
}
}
return stack.pop()
}
class Stack<T> {
private var items = [T]()
func push(_ item: T) {
items.append(item)
}
func pop() -> T {
items.removeLast()
}
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum 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 "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a / b)
case "(":
stack.append(0)
case ")":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
default:
guard let number = Double(token) else {
throw CalculateError.invalidInput
}
stack.append(number)
}
}
guard let result = stack.popLast() else {
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 {
let tokens = string.split(separator: " ")
var stack = [Double]()
for token in tokens {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a / b)
case "(":
stack.append(0)
case ")":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
default:
guard let number = Double(token) else {
throw CalculateError.invalidInput
}
stack.append(number)
}
}
guard let result = stack.popLast() else {
throw CalculateError.invalidInput
}
return result
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum 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 "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a / b)
default:
guard let value = Double(token) else {
throw CalculateError.invalidInput
}
stack.append(value)
}
}
guard let result = stack.popLast() else {
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 {
let tokens = string.split(separator: " ")
var stack = [Double]()
for token in tokens {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a / b)
default:
guard let value = Double(token) else {
throw CalculateError.invalidInput
}
stack.append(value)
}
}
guard let result = stack.popLast() else {
throw CalculateError.invalidInput
}
return result
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum 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 "+":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a / b)
case "(":
break
case ")":
break
default:
guard let value = Double(token) else { throw CalculateError.invalidInput }
stack.append(value)
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.first!
}### 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 "+":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(a / b)
case "(":
break
case ")":
break
default:
guard let value = Double(token) else { throw CalculateError.invalidInput }
stack.append(value)
}
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.first!
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
guard string.count > 0 else {
throw CalculateError.invalidInput
}
let tokens = string.map { String($0) }
let postfix = try infixToPostfix(tokens)
return try evaluatePostfix(postfix)
}
private func infixToPostfix(_ tokens: [String]) throws -> [String] {
var stack = [String]()
var postfix = [String]()
for token in tokens {
switch token {
case "+", "-", "*", "/":
while let top = stack.last, top != "(" {
postfix.append(top)
stack.removeLast()
}
stack.append(token)
case "(":
stack.append(token)
case ")":
while let top = stack.last, top != "(" {
postfix.append(top)
stack.removeLast()
}
if let top = stack.last, top == "(" {
stack.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
if let _ = Double(token) {
postfix.append(token)
} else {
throw CalculateError.invalidInput
}
}
}
while let top = stack.last {
postfix.append(top)
stack.removeLast()
}
return postfix
}
private func evaluatePostfix(_ postfix: [String]) throws -> Double {
var stack = [Double]()
for token in postfix {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b + a)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b - a)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b * a)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b / a)
default:
if let value = Double(token) {
stack.append(value)
} else {
throw CalculateError.invalidInput
}
}
}
guard let result = stack.popLast() else {
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 {
guard string.count > 0 else {
throw CalculateError.invalidInput
}
let tokens = string.map { String($0) }
let postfix = try infixToPostfix(tokens)
return try evaluatePostfix(postfix)
}
private func infixToPostfix(_ tokens: [String]) throws -> [String] {
var stack = [String]()
var postfix = [String]()
for token in tokens {
switch token {
case "+", "-", "*", "/":
while let top = stack.last, top != "(" {
postfix.append(top)
stack.removeLast()
}
stack.append(token)
case "(":
stack.append(token)
case ")":
while let top = stack.last, top != "(" {
postfix.append(top)
stack.removeLast()
}
if let top = stack.last, top == "(" {
stack.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
if let _ = Double(token) {
postfix.append(token)
} else {
throw CalculateError.invalidInput
}
}
}
while let top = stack.last {
postfix.append(top)
stack.removeLast()
}
return postfix
}
private func evaluatePostfix(_ postfix: [String]) throws -> Double {
var stack = [Double]()
for token in postfix {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b + a)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b - a)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b * a)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(b / a)
default:
if let value = Double(token) {
stack.append(value)
} else {
throw CalculateError.invalidInput
}
}
}
guard let result = stack.popLast() else {
throw CalculateError.invalidInput
}
return result
}
``` // XCTAssertEqual failed: (8.0) is not equal to (6.0)enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
let tokens = string.map { String($0) }
guard tokens.allSatisfy({ "+-*/()".contains($0) }) else {
throw CalculateError.invalidInput
}
return try calculate(tokens)
}
private func calculate(_ tokens: [String]) throws -> Double {
guard !tokens.isEmpty else {
throw CalculateError.invalidInput
}
var result = try calculate(tokens.dropLast())
let lastToken = tokens.last!
switch lastToken {
case "+":
result += try calculate(tokens.dropLast())
case "-":
result -= try calculate(tokens.dropLast())
case "*":
result *= try calculate(tokens.dropLast())
case "/":
result /= try calculate(tokens.dropLast())
case "(":
result = try calculate(tokens.dropLast())
case ")":
result = try calculate(tokens.dropLast())
default:
result = Double(lastToken)!
}
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 {
let tokens = string.map { String($0) }
guard tokens.allSatisfy({ "+-*/()".contains($0) }) else {
throw CalculateError.invalidInput
}
return try calculate(tokens)
}
private func calculate(_ tokens: [String]) throws -> Double {
guard !tokens.isEmpty else {
throw CalculateError.invalidInput
}
var result = try calculate(tokens.dropLast())
let lastToken = tokens.last!
switch lastToken {
case "+":
result += try calculate(tokens.dropLast())
case "-":
result -= try calculate(tokens.dropLast())
case "*":
result *= try calculate(tokens.dropLast())
case "/":
result /= try calculate(tokens.dropLast())
case "(":
result = try calculate(tokens.dropLast())
case ")":
result = try calculate(tokens.dropLast())
default:
result = Double(lastToken)!
}
return result
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum 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 "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a / b)
case "(":
break
case ")":
break
default:
guard let value = Double(token) else {
throw CalculateError.invalidInput
}
stack.append(value)
}
}
guard let result = stack.popLast() else {
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 {
let tokens = string.split(separator: " ")
var stack = [Double]()
for token in tokens {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a + b)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a - b)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a * b)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else {
throw CalculateError.invalidInput
}
stack.append(a / b)
case "(":
break
case ")":
break
default:
guard let value = Double(token) else {
throw CalculateError.invalidInput
}
stack.append(value)
}
}
guard let result = stack.popLast() else {
throw CalculateError.invalidInput
}
return result
}
``` // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
guard string.count > 0 else { throw CalculateError.invalidInput }
let tokens = string.split(separator: " ").map { String($0) }
let postfix = try infixToPostfix(tokens)
return try evaluatePostfix(postfix)
}
func infixToPostfix(_ tokens: [String]) throws -> [String] {
var stack = [String]()
var postfix = [String]()
for token in tokens {
switch token {
case "+", "-", "*", "/":
while let top = stack.last, top != "(" && precedence(top) >= precedence(token) {
postfix.append(stack.removeLast())
}
stack.append(token)
case "(":
stack.append(token)
case ")":
while let top = stack.last, top != "(" {
postfix.append(stack.removeLast())
}
if stack.last == "(" {
stack.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
guard let _ = Double(token) else { throw CalculateError.invalidInput }
postfix.append(token)
}
}
while let top = stack.last {
postfix.append(stack.removeLast())
}
return postfix
}
func evaluatePostfix(_ postfix: [String]) throws -> Double {
var stack = [Double]()
for token in postfix {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b + a)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b - a)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b * a)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b / a)
default:
guard let value = Double(token) else { throw CalculateError.invalidInput }
stack.append(value)
}
}
guard let result = stack.popLast() else { throw CalculateError.invalidInput }
return result
}
func precedence(_ token: String) -> Int {
switch token {
case "+", "-":
return 1
case "*", "/":
return 2
default:
return 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 {
guard string.count > 0 else { throw CalculateError.invalidInput }
let tokens = string.split(separator: " ").map { String($0) }
let postfix = try infixToPostfix(tokens)
return try evaluatePostfix(postfix)
}
func infixToPostfix(_ tokens: [String]) throws -> [String] {
var stack = [String]()
var postfix = [String]()
for token in tokens {
switch token {
case "+", "-", "*", "/":
while let top = stack.last, top != "(" && precedence(top) >= precedence(token) {
postfix.append(stack.removeLast())
}
stack.append(token)
case "(":
stack.append(token)
case ")":
while let top = stack.last, top != "(" {
postfix.append(stack.removeLast())
}
if stack.last == "(" {
stack.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
guard let _ = Double(token) else { throw CalculateError.invalidInput }
postfix.append(token)
}
}
while let top = stack.last {
postfix.append(stack.removeLast())
}
return postfix
}
func evaluatePostfix(_ postfix: [String]) throws -> Double {
var stack = [Double]()
for token in postfix {
switch token {
case "+":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b + a)
case "-":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b - a)
case "*":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b * a)
case "/":
guard let a = stack.popLast(), let b = stack.popLast() else { throw CalculateError.invalidInput }
stack.append(b / a)
default:
guard let value = Double(token) else { throw CalculateError.invalidInput }
stack.append(value)
}
}
guard let result = stack.popLast() else { throw CalculateError.invalidInput }
return result
}
func precedence(_ token: String) -> Int {
switch token {
case "+", "-":
return 1
case "*", "/":
return 2
default:
return 0
}
}
```while let top = stack.last { // value 'top' was defined but never used; consider replacing with boolean test // Fatal error: Error raised at top level: Solution.CalculateError.invalidInputfunc execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
process.standardOutput = stdoutPipe
let stderrPipe = Pipe()
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
process.standardOutput = stdoutPipe
let stderrPipe = Pipe()
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 pipe = Pipe()
task.standardOutput = pipe
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput = String(data: errorData, encoding: .utf8) ?? ""
return (output, errorOutput)
}### 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
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput = String(data: errorData, encoding: .utf8) ?? ""
return (output, errorOutput)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
process.standardOutput = stdoutPipe
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
process.standardOutput = stdoutPipe
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
process.standardOutput = stdoutPipe
let stderrPipe = Pipe()
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
process.standardOutput = stdoutPipe
let stderrPipe = Pipe()
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
process.standardOutput = stdoutPipe
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
process.standardOutput = stdoutPipe
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
process.standardOutput = stdoutPipe
let stderrPipe = Pipe()
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
process.standardOutput = stdoutPipe
let stderrPipe = Pipe()
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: stdoutData, encoding: .utf8) ?? ""
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
let stderr = String(data: stderrData, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.executableURL = URL(fileURLWithPath: binary)
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
try! task.run()
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.executableURL = URL(fileURLWithPath: binary)
task.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
task.standardOutput = stdoutPipe
task.standardError = stderrPipe
try! task.run()
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 pipe = Pipe()
task.standardOutput = pipe
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput = String(data: errorData, encoding: .utf8) ?? ""
return (output, errorOutput)
}### 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
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput = String(data: errorData, encoding: .utf8) ?? ""
return (output, errorOutput)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput = String(data: errorData, encoding: .utf8) ?? ""
return (output, errorOutput)
}### 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
let errorPipe = Pipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = String(data: data, encoding: .utf8) ?? ""
let errorData = errorPipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput = String(data: errorData, encoding: .utf8) ?? ""
return (output, errorOutput)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
process.standardOutput = stdoutPipe
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
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 process = Process()
process.executableURL = URL(fileURLWithPath: binary)
process.arguments = arguments
let stdoutPipe = Pipe()
let stderrPipe = Pipe()
process.standardOutput = stdoutPipe
process.standardError = stderrPipe
try! process.run()
process.waitUntilExit()
let stdoutData = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
let stderrData = stderrPipe.fileHandleForReading.readDataToEndOfFile()
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 { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = 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 { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let result = cache[x] {
return result
}
let result = function(x)
cache[x] = 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 { x in
if let result = cache[x] {
return result
}
let result = function(x)
cache[x] = result
return result
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let result = cache[x] {
return result
} else {
let result = function(x)
cache[x] = 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 { x in
if let result = cache[x] {
return result
} else {
let result = function(x)
cache[x] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let result = cache[x] {
return result
}
let result = function(x)
cache[x] = 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 { x in
if let result = cache[x] {
return result
}
let result = function(x)
cache[x] = result
return result
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = 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 { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let result = cache[x] {
return result
} else {
let result = function(x)
cache[x] = 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 { x in
if let result = cache[x] {
return result
} else {
let result = function(x)
cache[x] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = 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 { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = value
return value
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let result = cache[x] {
return result
} else {
let result = function(x)
cache[x] = 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 { x in
if let result = cache[x] {
return result
} else {
let result = function(x)
cache[x] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let computedValue = function(x)
cache[x] = computedValue
return computedValue
}
}
}### 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 { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let computedValue = function(x)
cache[x] = computedValue
return computedValue
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = 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 { x in
if let cachedValue = cache[x] {
return cachedValue
} else {
let value = function(x)
cache[x] = value
return value
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var error: Error?
for _ in 0..<attempts {
do {
return try task()
} catch {
error = error
}
}
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 error: Error?
for _ in 0..<attempts {
do {
return try task()
} catch {
error = error
}
}
throw error!
}
```error = error // cannot assign to value: 'error' is immutablefunc retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed
}
enum RetryError: Error {
case failed
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed
}
enum RetryError: Error {
case failed
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed
}
enum RetryError: Error {
case failed
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed
}
enum RetryError: Error {
case failed
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed
}
enum RetryError: Error {
case failed
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed
}
enum RetryError: Error {
case failed
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.failed(attempts: attempts)
}
enum RetryError: Error {
case failed(attempts: Int)
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.exceededAttempts
}
enum RetryError: Error {
case exceededAttempts
}### 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 {
for _ in 0..<attempts {
do {
return try task()
} catch {
continue
}
}
throw RetryError.exceededAttempts
}
enum RetryError: Error {
case exceededAttempts
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw RetryError.maxAttemptsReached
}
enum RetryError: Error {
case maxAttemptsReached
}### 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 attempt = 0
while attempt < attempts {
do {
return try task()
} catch {
attempt += 1
}
}
throw RetryError.maxAttemptsReached
}
enum RetryError: Error {
case maxAttemptsReached
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### 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: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories = [String: Any]()
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories = [String: Any]()
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
``` // XCTAssertEqual failed: (nil) is not equal to (Optional("Hello, World!"))protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}### 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: [String: Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
if let factory = factories[key] as? () -> T {
return factory()
}
return nil
}
}
```protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories: [String: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] 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: [String: () -> Any] = [:]
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
let key = String(describing: type)
factories[key] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let key = String(describing: type)
guard let factory = factories[key] 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 = [String: Any]()
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories["\(type)"] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories["\(type)"] as? () -> T {
return factory()
}
return nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple dependency injection (DI) container.
### Response:
```swift
protocol DIContainerProtocol {
func register<T>(_ type: T.Type, factory: @escaping () -> T)
func resolve<T>(_ type: T.Type) -> T?
}
class DIContainer: DIContainerProtocol {
private var factories = [String: Any]()
func register<T>(_ type: T.Type, factory: @escaping () -> T) {
factories["\(type)"] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
if let factory = factories["\(type)"] as? () -> T {
return factory()
}
return nil
}
}
```protocol StateMachineProtocol {
associatedtype State: Hashable
associatedtype Event: Hashable
init(state: State)
var state: State { get }
func trigger(event: Event)
func registerTransition(from: State, to: State, event: Event)
}
class StateMachine<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var state: State
private var transitions: [State: [(Event, State)]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?.first(where: { $0.0 == event }) else {
return
}
state = transition.1
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: []].append((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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var state: State
private var transitions: [State: [(Event, State)]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?.first(where: { $0.0 == event }) else {
return
}
state = transition.1
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: []].append((event, to))
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var transitions: [State: [Event: State]] = [:]
private var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var transitions: [State: [Event: State]] = [:]
private var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var transitions: [State: [(Event, State)]] = [:]
private var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transitions = transitions[state],
let transition = transitions.first(where: { $0.0 == event }) else {
return
}
self.state = transition.1
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: []].append((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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var transitions: [State: [(Event, State)]] = [:]
private var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transitions = transitions[state],
let transition = transitions.first(where: { $0.0 == event }) else {
return
}
self.state = transition.1
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: []].append((event, to))
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var state: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var state: State
private var transitions: [State: [Event: State]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?[event] else { return }
state = transition
}
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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions[state]?[event] else { return }
state = transition
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}### 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]] = [:]
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let nextState = transitions[state]?[event] else { return }
state = nextState
}
func registerTransition(from: State, to: State, event: Event) {
transitions[from, default: [:]][event] = to
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var transitions: [Transition] = []
private var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions.first(where: { $0.from == state && $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))
}
private 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<S: Hashable, E: Hashable>: StateMachineProtocol {
typealias State = S
typealias Event = E
private var transitions: [Transition] = []
private var state: State
required init(state: State) {
self.state = state
}
func trigger(event: Event) {
guard let transition = transitions.first(where: { $0.from == state && $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))
}
private struct Transition {
let from: State
let to: State
let event: Event
}
}
```private var state: State // property 'state' must be declared internal because it matches a requirement in internal protocol 'StateMachineProtocol'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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.reduce(1, max)
}
}
}### 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.reduce(1, max)
}
}
}
``` // XCTAssertEqual failed: (1) 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 0
}
}
}
``` // XCTAssertEqual failed: (0) is not equal to (1)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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map(\.totalSize).reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map(\.filesCount).reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case let .directory(_, contents):
return contents.map(\.treeDepth).max() ?? 0 + 1
}
}
}### 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map(\.totalSize).reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map(\.filesCount).reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case let .directory(_, contents):
return contents.map(\.treeDepth).max() ?? 0 + 1
}
}
}
``` // XCTAssertEqual failed: (0) 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case let .directory(_, contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}### 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case let .directory(_, contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}
``` // XCTAssertEqual failed: (0) 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}### 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}
``` // XCTAssertEqual failed: (1) 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map(\.totalSize).reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map(\.filesCount).reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map(\.treeDepth).max() ?? 0 + 1
}
}
}### 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map(\.totalSize).reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map(\.filesCount).reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map(\.treeDepth).max() ?? 0 + 1
}
}
}
``` // XCTAssertEqual failed: (1) 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case let .directory(_, contents):
return contents.reduce(0) { max($0, $1.treeDepth) } + 1
}
}
}### 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case let .directory(_, contents):
return contents.reduce(0) { max($0, $1.treeDepth) } + 1
}
}
}
``` // 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}### 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}
``` // XCTAssertEqual failed: (1) 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 1
}
}
}### 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.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case .directory(_, let contents):
return contents.map { $0.treeDepth }.max() ?? 1
}
}
}
``` // XCTAssertEqual failed: (1) 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}### 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 let .file(_, size):
return size
case let .directory(_, contents):
return contents.map { $0.totalSize }.reduce(0, +)
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map { $0.filesCount }.reduce(0, +)
}
}
var treeDepth: Int {
switch self {
case .file:
return 1
case let .directory(_, contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}
``` // XCTAssertEqual failed: (1) 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 elements: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
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: [Element] = []
required init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
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? {
elements.popLast()
}
}
```var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element]
private var recent: [Key]
init(capacity: Int) {
self.capacity = capacity
self.cache = [Key: Element]()
self.recent = [Key]()
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else {
return nil
}
recent.removeAll { $0 == key }
recent.append(key)
return element
}
set {
if let newValue = newValue {
if cache.count == capacity, let leastRecentlyUsed = recent.first {
cache.removeValue(forKey: leastRecentlyUsed)
recent.removeAll { $0 == leastRecentlyUsed }
}
cache[key] = newValue
recent.append(key)
} else {
cache.removeValue(forKey: key)
recent.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 capacity: Int
private var cache: [Key: Element]
private var recent: [Key]
init(capacity: Int) {
self.capacity = capacity
self.cache = [Key: Element]()
self.recent = [Key]()
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else {
return nil
}
recent.removeAll { $0 == key }
recent.append(key)
return element
}
set {
if let newValue = newValue {
if cache.count == capacity, let leastRecentlyUsed = recent.first {
cache.removeValue(forKey: leastRecentlyUsed)
recent.removeAll { $0 == leastRecentlyUsed }
}
cache[key] = newValue
recent.append(key)
} else {
cache.removeValue(forKey: key)
recent.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else {
return nil
}
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
set {
if let element = newValue {
if cache[key] == nil {
if keys.count == capacity {
let removedKey = keys.removeFirst()
cache.removeValue(forKey: removedKey)
}
keys.append(key)
}
cache[key] = element
} else {
cache.removeValue(forKey: key)
keys.removeAll(where: { $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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else {
return nil
}
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
set {
if let element = newValue {
if cache[key] == nil {
if keys.count == capacity {
let removedKey = keys.removeFirst()
cache.removeValue(forKey: removedKey)
}
keys.append(key)
}
cache[key] = element
} else {
cache.removeValue(forKey: key)
keys.removeAll(where: { $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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.removeAll(where: { $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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll(where: { $0 == key })
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.removeAll(where: { $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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let newValue = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = newValue
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let newValue = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = newValue
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var recentKeys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
recentKeys.removeAll { $0 == key }
recentKeys.append(key)
return element
}
set {
if let newValue = newValue {
if cache.keys.contains(key) {
cache[key] = newValue
recentKeys.removeAll { $0 == key }
recentKeys.append(key)
} else {
if cache.count == capacity {
let leastRecentlyUsedKey = recentKeys.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
recentKeys.removeAll { $0 == leastRecentlyUsedKey }
}
cache[key] = newValue
recentKeys.append(key)
}
} else {
cache.removeValue(forKey: key)
recentKeys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var recentKeys: [Key] = []
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
recentKeys.removeAll { $0 == key }
recentKeys.append(key)
return element
}
set {
if let newValue = newValue {
if cache.keys.contains(key) {
cache[key] = newValue
recentKeys.removeAll { $0 == key }
recentKeys.append(key)
} else {
if cache.count == capacity {
let leastRecentlyUsedKey = recentKeys.first!
cache.removeValue(forKey: leastRecentlyUsedKey)
recentKeys.removeAll { $0 == leastRecentlyUsedKey }
}
cache[key] = newValue
recentKeys.append(key)
}
} else {
cache.removeValue(forKey: key)
recentKeys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache[key] == nil {
if keys.count == capacity {
cache.removeValue(forKey: keys.removeFirst())
}
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache[key] == nil {
if keys.count == capacity {
cache.removeValue(forKey: keys.removeFirst())
}
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.removeAll { $0 == 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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else {
return nil
}
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else {
return nil
}
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.removeAll { $0 == 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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.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 capacity: Int
private var cache: [Key: Element] = [:]
private var keys: [Key] = []
required init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
guard let element = cache[key] else { return nil }
keys.removeAll { $0 == key }
keys.append(key)
return element
}
set {
if let element = newValue {
if cache.count == capacity, let keyToRemove = keys.first {
cache.removeValue(forKey: keyToRemove)
keys.removeFirst()
}
cache[key] = element
keys.append(key)
} else {
cache.removeValue(forKey: key)
keys.removeAll { $0 == key }
}
}
}
}
```protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], expiration > Date() else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache: SubscriptAccess {
subscript(key: Key) -> Value? {
get {
get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: 0)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.
### Response:
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], expiration > Date() else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
extension ExpirableCache: SubscriptAccess {
subscript(key: Key) -> Value? {
get {
get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: 0)
}
}
}
```extension ExpirableCache: SubscriptAccess { // cannot find type 'SubscriptAccess' in scopeThread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
private let expiration: TimeInterval
init(expiration: TimeInterval) {
self.expiration = expiration
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: Key) -> Value? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
cache.removeValue(forKey: key)
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
get(key: key)
}
set {
guard let newValue = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: newValue, key: key, expiration: expiration)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.
### Response:
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
private let expiration: TimeInterval
init(expiration: TimeInterval) {
self.expiration = expiration
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: Key) -> Value? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
cache.removeValue(forKey: key)
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
get(key: key)
}
set {
guard let newValue = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: newValue, key: key, expiration: expiration)
}
}
}
```let cache = ExpirableCache<String, String>() // missing argument for parameter 'expiration' in callThread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (V, Date)] = [:]
private let expiration: TimeInterval
init(expiration: TimeInterval) {
self.expiration = expiration
}
subscript(key: K) -> V? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: expiration)
}
}
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: K) -> V? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
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<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (V, Date)] = [:]
private let expiration: TimeInterval
init(expiration: TimeInterval) {
self.expiration = expiration
}
subscript(key: K) -> V? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: expiration)
}
}
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: K) -> V? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
cache.removeValue(forKey: key)
return nil
}
return value
}
}
```let cache = ExpirableCache<String, String>() // missing argument for parameter 'expiration' in callThread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: TimeInterval)] = [:]
private var expirationQueue: [Key: TimeInterval] = [:]
private var timer: Timer?
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let value = newValue {
put(value: value, key: key, expiration: 10)
} else {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value: value, expiration: Date().timeIntervalSince1970 + expiration)
expirationQueue[key] = Date().timeIntervalSince1970 + expiration
if timer == nil {
timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(evictExpired), userInfo: nil, repeats: true)
}
}
func get(key: Key) -> Value? {
return cache[key]?.value
}
@objc private func evictExpired() {
let now = Date().timeIntervalSince1970
for (key, expiration) in expirationQueue {
if expiration < now {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
}
}### 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 expirationQueue: [Key: TimeInterval] = [:]
private var timer: Timer?
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
if let value = newValue {
put(value: value, key: key, expiration: 10)
} else {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value: value, expiration: Date().timeIntervalSince1970 + expiration)
expirationQueue[key] = Date().timeIntervalSince1970 + expiration
if timer == nil {
timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(evictExpired), userInfo: nil, repeats: true)
}
}
func get(key: Key) -> Value? {
return cache[key]?.value
}
@objc private func evictExpired() {
let now = Date().timeIntervalSince1970
for (key, expiration) in expirationQueue {
if expiration < now {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertNil failed: expression is not nilprotocol 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, TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().timeIntervalSince1970 + expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], expiration > Date().timeIntervalSince1970 else {
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: 0)
}
}
}### 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, TimeInterval)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().timeIntervalSince1970 + expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], expiration > Date().timeIntervalSince1970 else {
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: 0)
}
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: Key) -> Value? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: 0)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.
### Response:
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: Key) -> Value? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: value, key: key, expiration: 0)
}
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (V, Date)] = [:]
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: K) -> V? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
return nil
}
return value
}
subscript(key: K) -> V? {
get {
get(key: key)
}
set {
guard let newValue = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: newValue, key: key, expiration: 0)
}
}
}### 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<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (V, Date)] = [:]
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value, Date().addingTimeInterval(expiration))
}
func get(key: K) -> V? {
guard let (value, expirationDate) = cache[key], expirationDate > Date() else {
return nil
}
return value
}
subscript(key: K) -> V? {
get {
get(key: key)
}
set {
guard let newValue = newValue else {
cache.removeValue(forKey: key)
return
}
put(value: newValue, key: key, expiration: 0)
}
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (value: V, expiration: TimeInterval)] = [:]
private var expirationQueue: [K: TimeInterval] = [:]
private var expirationTimer: Timer?
private var expirationInterval: TimeInterval = 1
subscript(key: K) -> V? {
get {
return get(key: key)
}
set {
if let value = newValue {
put(value: value, key: key, expiration: 0)
} else {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
}
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value: value, expiration: Date().timeIntervalSince1970 + expiration)
expirationQueue[key] = expiration
scheduleExpirationTimer()
}
func get(key: K) -> V? {
guard let (value, expiration) = cache[key] else { return nil }
if Date().timeIntervalSince1970 > expiration {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
return nil
}
return value
}
private func scheduleExpirationTimer() {
guard expirationTimer == nil else { return }
expirationTimer = Timer.scheduledTimer(withTimeInterval: expirationInterval, repeats: true) { [weak self] _ in
guard let self = self else { return }
let now = Date().timeIntervalSince1970
self.expirationQueue.forEach { key, expiration in
if now > expiration {
self.cache.removeValue(forKey: key)
self.expirationQueue.removeValue(forKey: key)
}
}
if self.expirationQueue.isEmpty {
self.expirationTimer?.invalidate()
self.expirationTimer = 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<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (value: V, expiration: TimeInterval)] = [:]
private var expirationQueue: [K: TimeInterval] = [:]
private var expirationTimer: Timer?
private var expirationInterval: TimeInterval = 1
subscript(key: K) -> V? {
get {
return get(key: key)
}
set {
if let value = newValue {
put(value: value, key: key, expiration: 0)
} else {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
}
}
}
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value: value, expiration: Date().timeIntervalSince1970 + expiration)
expirationQueue[key] = expiration
scheduleExpirationTimer()
}
func get(key: K) -> V? {
guard let (value, expiration) = cache[key] else { return nil }
if Date().timeIntervalSince1970 > expiration {
cache.removeValue(forKey: key)
expirationQueue.removeValue(forKey: key)
return nil
}
return value
}
private func scheduleExpirationTimer() {
guard expirationTimer == nil else { return }
expirationTimer = Timer.scheduledTimer(withTimeInterval: expirationInterval, repeats: true) { [weak self] _ in
guard let self = self else { return }
let now = Date().timeIntervalSince1970
self.expirationQueue.forEach { key, expiration in
if now > expiration {
self.cache.removeValue(forKey: key)
self.expirationQueue.removeValue(forKey: key)
}
}
if self.expirationQueue.isEmpty {
self.expirationTimer?.invalidate()
self.expirationTimer = 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 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (V, TimeInterval)] = [:]
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value, Date().timeIntervalSince1970 + expiration)
}
func get(key: K) -> V? {
guard let (value, expiration) = cache[key], expiration > Date().timeIntervalSince1970 else {
cache.removeValue(forKey: key)
return nil
}
return value
}
subscript(key: K) -> V? {
get { get(key: key) }
set { put(value: newValue!, key: key, expiration: 60) }
}
}### 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<K: Hashable, V>: ExpirableCacheProtocol {
private var cache: [K: (V, TimeInterval)] = [:]
func put(value: V, key: K, expiration: TimeInterval) {
cache[key] = (value, Date().timeIntervalSince1970 + expiration)
}
func get(key: K) -> V? {
guard let (value, expiration) = cache[key], expiration > Date().timeIntervalSince1970 else {
cache.removeValue(forKey: key)
return nil
}
return value
}
subscript(key: K) -> V? {
get { get(key: key) }
set { put(value: newValue!, key: key, expiration: 60) }
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (value: Value, expiration: TimeInterval)] = [:]
private var currentTime: TimeInterval {
return Date().timeIntervalSince1970
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], currentTime < expiration else {
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
return
}
put(value: value, key: key, expiration: currentTime + 60)
}
}
}### 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 currentTime: TimeInterval {
return Date().timeIntervalSince1970
}
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, expiration)
}
func get(key: Key) -> Value? {
guard let (value, expiration) = cache[key], currentTime < expiration else {
return nil
}
return value
}
subscript(key: Key) -> Value? {
get {
return get(key: key)
}
set {
guard let value = newValue else {
return
}
put(value: value, key: key, expiration: currentTime + 60)
}
}
}
```Thread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertEqual failed: (nil) is not equal to (Optional("Hello, SwiftEval!"))protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = encrypt(data, keyData)
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = decrypt(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func encrypt(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
data.withUnsafeBytes { dataBytes in
keyData.withUnsafeBytes { keyBytes in
encryptedData.withUnsafeMutableBytes { encryptedBytes in
for index in 0..<data.count {
encryptedBytes[index] = dataBytes[index] ^ keyBytes[index % keyData.count]
}
}
}
}
return encryptedData
}
private func decrypt(_ data: Data, _ keyData: Data) -> Data {
return encrypt(data, keyData)
}
}### 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 = encrypt(data, keyData)
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = decrypt(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func encrypt(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
data.withUnsafeBytes { dataBytes in
keyData.withUnsafeBytes { keyBytes in
encryptedData.withUnsafeMutableBytes { encryptedBytes in
for index in 0..<data.count {
encryptedBytes[index] = dataBytes[index] ^ keyBytes[index % keyData.count]
}
}
}
}
return encryptedData
}
private func decrypt(_ data: Data, _ keyData: Data) -> Data {
return encrypt(data, keyData)
}
}
```encryptedData.withUnsafeMutableBytes { encryptedBytes in // ambiguous use of 'withUnsafeMutableBytes'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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for index in 0..<data.count {
encryptedData[index] = data[index] ^ keyData[index % keyData.count]
}
return encryptedData
}
}### 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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for index in 0..<data.count {
encryptedData[index] = data[index] ^ keyData[index % keyData.count]
}
return encryptedData
}
}
```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 = xor(data, keyData)
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
}### 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 = xor(data, keyData)
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
}
```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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for index in 0..<data.count {
let dataByte = data[index]
let keyByte = keyData[index % keyData.count]
encryptedData[index] = dataByte ^ keyByte
}
return encryptedData
}
}### 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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for index in 0..<data.count {
let dataByte = data[index]
let keyByte = keyData[index % keyData.count]
encryptedData[index] = dataByte ^ keyByte
}
return encryptedData
}
}
```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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for index in 0..<data.count {
encryptedData[index] = data[index] ^ keyData[index % keyData.count]
}
return encryptedData
}
}### 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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for index in 0..<data.count {
encryptedData[index] = data[index] ^ keyData[index % keyData.count]
}
return encryptedData
}
}
```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 stringData = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = xor(stringData, keyData)
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
}### 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 stringData = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
let encryptedData = xor(stringData, keyData)
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
}
```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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var result = Data(count: data.count)
data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
result.withUnsafeMutableBytes { (resultBytes: UnsafeMutablePointer<UInt8>) in
for index in 0..<data.count {
resultBytes[index] = dataBytes[index] ^ keyBytes[index % keyData.count]
}
}
}
}
return result
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var result = Data(count: data.count)
data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in
keyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in
result.withUnsafeMutableBytes { (resultBytes: UnsafeMutablePointer<UInt8>) in
for index in 0..<data.count {
resultBytes[index] = dataBytes[index] ^ keyBytes[index % keyData.count]
}
}
}
}
return result
}
}
```data.withUnsafeBytes { (dataBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadkeyData.withUnsafeBytes { (keyBytes: UnsafePointer<UInt8>) in // 'withUnsafeBytes' is deprecated: use `withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R` insteadresult.withUnsafeMutableBytes { (resultBytes: UnsafeMutablePointer<UInt8>) in // 'withUnsafeMutableBytes' is deprecated: use `withUnsafeMutableBytes<R>(_: (UnsafeMutableRawBufferPointer) throws -> R) rethrows -> R` insteadprotocol 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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
}### 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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for i in 0..<data.count {
encryptedData[i] = data[i] ^ keyData[i % keyData.count]
}
return encryptedData
}
}
```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 keyLength = keyData.count
let encryptedData = data.map { (byte) -> UInt8 in
let keyByte = keyData[Int(arc4random_uniform(UInt32(keyLength)))]
return byte ^ keyByte
}
return Data(encryptedData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
let decryptedData = data.map { (byte) -> UInt8 in
let keyByte = keyData[Int(arc4random_uniform(UInt32(keyLength)))]
return byte ^ keyByte
}
return String(data: 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)!
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
let encryptedData = data.map { (byte) -> UInt8 in
let keyByte = keyData[Int(arc4random_uniform(UInt32(keyLength)))]
return byte ^ keyByte
}
return Data(encryptedData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let keyLength = keyData.count
let decryptedData = data.map { (byte) -> UInt8 in
let keyByte = keyData[Int(arc4random_uniform(UInt32(keyLength)))]
return byte ^ keyByte
}
return String(data: Data(decryptedData), encoding: .utf8)!
}
}
``` // XCTAssertEqual failed: (Hello, SwiftEval!) is not equal to (Zrmou42Ft{~fWgpv )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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for (index, value) in data.enumerated() {
encryptedData[index] = value ^ keyData[index % keyData.count]
}
return encryptedData
}
}### 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)!
return xor(data, keyData)
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
let decryptedData = xor(data, keyData)
return String(data: decryptedData, encoding: .utf8)!
}
private func xor(_ data: Data, _ keyData: Data) -> Data {
var encryptedData = Data(count: data.count)
for (index, value) in data.enumerated() {
encryptedData[index] = value ^ keyData[index % keyData.count]
}
return encryptedData
}
}
```protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requestCount = 0
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = Date()
if let lastRequestTime = lastRequestTime,
currentTime.timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
if requestCount >= maxRequests {
return false
}
requestCount += 1
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 let maxRequests: Int
private let timeInterval: TimeInterval
private var requestCount = 0
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = Date()
if let lastRequestTime = lastRequestTime,
currentTime.timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
if requestCount >= maxRequests {
return false
}
requestCount += 1
lastRequestTime = currentTime
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requestCount = 0
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = Date()
if let lastRequestTime = lastRequestTime,
currentTime.timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
if requestCount >= maxRequests {
return false
}
requestCount += 1
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 let maxRequests: Int
private let timeInterval: TimeInterval
private var requestCount = 0
private var lastRequestTime: Date?
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = Date()
if let lastRequestTime = lastRequestTime,
currentTime.timeIntervalSince(lastRequestTime) < timeInterval {
return false
}
if requestCount >= maxRequests {
return false
}
requestCount += 1
lastRequestTime = currentTime
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
while let oldestRequest = requests.first, now.timeIntervalSince(oldestRequest) > timeInterval {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}### 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 requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
while let oldestRequest = requests.first, now.timeIntervalSince(oldestRequest) > timeInterval {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}
```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 requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let oldestRequest = requests.first ?? now
let oldestRequestIsTooOld = now.timeIntervalSince(oldestRequest) > timeInterval
if oldestRequestIsTooOld {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}### 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 requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let oldestRequest = requests.first ?? now
let oldestRequestIsTooOld = now.timeIntervalSince(oldestRequest) > timeInterval
if oldestRequestIsTooOld {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let oldestRequest = requests.first ?? now
let oldestRequestIsOlderThanTimeInterval = now.timeIntervalSince(oldestRequest) > timeInterval
if oldestRequestIsOlderThanTimeInterval {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}### 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 requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let oldestRequest = requests.first ?? now
let oldestRequestIsOlderThanTimeInterval = now.timeIntervalSince(oldestRequest) > timeInterval
if oldestRequestIsOlderThanTimeInterval {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests = requests.filter { $0.timeIntervalSince(now) < timeInterval }
if requests.count < maxRequests {
requests.append(now)
return true
}
return false
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Rate limiter that controls the rate of actions.
Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests = requests.filter { $0.timeIntervalSince(now) < timeInterval }
if requests.count < maxRequests {
requests.append(now)
return true
}
return false
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var lastRequestTime: Date?
private var requestCount: Int = 0
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
if let lastRequestTime = lastRequestTime,
now.timeIntervalSince(lastRequestTime) < timeInterval {
requestCount += 1
if requestCount > maxRequests {
return false
}
} else {
requestCount = 1
}
lastRequestTime = now
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: Date?
private var requestCount: Int = 0
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
if let lastRequestTime = lastRequestTime,
now.timeIntervalSince(lastRequestTime) < timeInterval {
requestCount += 1
if requestCount > maxRequests {
return false
}
} else {
requestCount = 1
}
lastRequestTime = now
return true
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
requests = requests.filter { $0.timeIntervalSince(now) < timeInterval }
return requests.count <= maxRequests
}
}### 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 requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
requests = requests.filter { $0.timeIntervalSince(now) < timeInterval }
return requests.count <= maxRequests
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let oldestRequest = requests.first!
let oldestRequestIsTooOld = now.timeIntervalSince(oldestRequest) > timeInterval
if oldestRequestIsTooOld {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}### 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 requests: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let oldestRequest = requests.first!
let oldestRequestIsTooOld = now.timeIntervalSince(oldestRequest) > timeInterval
if oldestRequestIsTooOld {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}
```Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6 // XCTAssertTrue failedprotocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requestTimes: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requestTimes.append(now)
while let firstRequestTime = requestTimes.first, now.timeIntervalSince(firstRequestTime) > timeInterval {
requestTimes.removeFirst()
}
return requestTimes.count <= maxRequests
}
}### 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 requestTimes: [Date] = []
required init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requestTimes.append(now)
while let firstRequestTime = requestTimes.first, now.timeIntervalSince(firstRequestTime) > timeInterval {
requestTimes.removeFirst()
}
return requestTimes.count <= maxRequests
}
}
```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()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
required 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()
required 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
}
}
```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 let value: T
private var transforms: [(T) -> T] = []
required init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (T) -> T]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: T
private var transforms: [(T) -> T] = []
required init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (T) -> T]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let pipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [{ transform($0) as! Output }]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value, { $1($0) })
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [{ transform($0) as! Output }]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value, { $1($0) })
}
}
```let pipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (Output) -> Output]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (Output) -> Output]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let pipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
transforms.append { transform($0) as! Output }
return Pipeline<U>(value: value)
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
transforms.append { transform($0) as! Output }
return Pipeline<U>(value: value)
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```return Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (Output) -> Output]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (Output) -> Output]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let pipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform as! (Output) -> Output]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform as! (Output) -> Output]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let newPipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform as! (Output) -> Output]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let newPipeline = Pipeline<U>(value: value)
newPipeline.transforms = transforms + [transform as! (Output) -> Output]
return newPipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let newPipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let initialValue: T
private var transforms: [(T) -> T] = []
required init(value: T) {
initialValue = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: initialValue)
pipeline.transforms = transforms + [transform as! (T) -> T]
return pipeline
}
func execute() -> Output {
return transforms.reduce(initialValue) { $1($0) }
}
}### 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 let initialValue: T
private var transforms: [(T) -> T] = []
required init(value: T) {
initialValue = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: initialValue)
pipeline.transforms = transforms + [transform as! (T) -> T]
return pipeline
}
func execute() -> Output {
return transforms.reduce(initialValue) { $1($0) }
}
}
```let pipeline = Pipeline<U>(value: initialValue) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (Output) -> Output]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [transform as! (Output) -> Output]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let pipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
private let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [{ transform($0) as! Output }]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}### 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 let value: Output
private var transforms: [(Output) -> Output] = []
required init(value: Output) {
self.value = value
}
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U> {
let pipeline = Pipeline<U>(value: value)
pipeline.transforms = transforms + [{ transform($0) as! Output }]
return pipeline
}
func execute() -> Output {
return transforms.reduce(value) { $1($0) }
}
}
```let pipeline = Pipeline<U>(value: value) // cannot convert value of type 'T' to expected argument type 'U'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
func notifyObservers() {
observers.values.forEach { $0(value) }
}
}
extension ObservableProperty {
var value: Value {
get {
return value
}
set {
value = newValue
notifyObservers()
}
}
}### 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 {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
func notifyObservers() {
observers.values.forEach { $0(value) }
}
}
extension ObservableProperty {
var value: Value {
get {
return value
}
set {
value = newValue
notifyObservers()
}
}
}
```class ObservableProperty<Value> : ObservablePropertyProtocol { // type 'ObservableProperty<Value>' does not conform to 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'observable.value = 10 // cannot assign to property: 'observable' is a 'let' constantobservable.value = 20 // cannot assign to property: 'observable' is a 'let' constantobservable.value = 30 // cannot assign to property: 'observable' is a 'let' constantprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
func notifyObservers() {
observers.values.forEach { $0(value) }
}
}
extension ObservableProperty {
var value: Value {
get {
return value
}
set {
value = newValue
notifyObservers()
}
}
}### 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 {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
func notifyObservers() {
observers.values.forEach { $0(value) }
}
}
extension ObservableProperty {
var value: Value {
get {
return value
}
set {
value = newValue
notifyObservers()
}
}
}
```class ObservableProperty<Value> : ObservablePropertyProtocol { // type 'ObservableProperty<Value>' does not conform to protocol 'ObservablePropertyProtocol'var value: Value { // invalid redeclaration of 'value'observable.value = 10 // cannot assign to property: 'observable' is a 'let' constantobservable.value = 20 // cannot assign to property: 'observable' is a 'let' constantobservable.value = 30 // cannot assign to property: 'observable' is a 'let' constantprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
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> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
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> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var currentValue: Value
init(value: Value) {
currentValue = value
}
var value: Value {
get {
return currentValue
}
set {
currentValue = newValue
notifyObservers(newValue)
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers(_ value: Value) {
observers.values.forEach { observer in
observer(value)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var currentValue: Value
init(value: Value) {
currentValue = value
}
var value: Value {
get {
return currentValue
}
set {
currentValue = newValue
notifyObservers(newValue)
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers(_ value: Value) {
observers.values.forEach { observer in
observer(value)
}
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
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> : ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
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> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let uuid = UUID()
observers[uuid] = observer
observer(value)
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(value) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
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> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
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> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
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> : ObservablePropertyProtocol {
typealias Observer = (Value) -> Void
private var observers: [UUID: Observer] = [:]
private var value: Value
required init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping Observer) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
var value: Value {
get {
return value
}
set {
value = newValue
observers.values.forEach { $0(newValue) }
}
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'var value: Value { // invalid redeclaration of 'value'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = range.clamping(newValue) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = range.clamping(wrappedValue)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = range.clamping(newValue) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = range.clamping(wrappedValue)
}
}
```set { value = range.clamping(newValue) } // value of type 'ClosedRange<Value>' has no member 'clamping'self.value = range.clamping(wrappedValue) // value of type 'ClosedRange<Value>' has no member 'clamping'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.range = range
self.value = range.clamp(wrappedValue)
}
var wrappedValue: Value {
get { value }
set { value = range.clamp(newValue) }
}
}
extension ClosedRange {
func clamp(_ value: Bound) -> Bound {
Swift.min(Swift.max(value, lowerBound), upperBound)
}
}### 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.range = range
self.value = range.clamp(wrappedValue)
}
var wrappedValue: Value {
get { value }
set { value = range.clamp(newValue) }
}
}
extension ClosedRange {
func clamp(_ value: Bound) -> Bound {
Swift.min(Swift.max(value, lowerBound), upperBound)
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var range: ClosedRange<Value>
private var value: Value
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = wrappedValue.clamped(to: range)
}
var wrappedValue: Value {
get { value }
set { value = newValue.clamped(to: 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 range: ClosedRange<Value>
private var value: Value
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = wrappedValue.clamped(to: range)
}
var wrappedValue: Value {
get { value }
set { value = newValue.clamped(to: range) }
}
}
```self.value = wrappedValue.clamped(to: range) // value of type 'Value' has no member 'clamped'set { value = newValue.clamped(to: range) } // value of type 'Value' has no member 'clamped'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value {
didSet {
if wrappedValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if wrappedValue > range.upperBound {
wrappedValue = range.upperBound
}
}
}
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.wrappedValue = wrappedValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value {
didSet {
if wrappedValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if wrappedValue > range.upperBound {
wrappedValue = range.upperBound
}
}
}
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.wrappedValue = wrappedValue
}
}
```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.range = range
self.value = range.clamp(wrappedValue)
}
var wrappedValue: Value {
get { value }
set { value = range.clamp(newValue) }
}
}
extension ClosedRange {
func clamp(_ value: Bound) -> Bound {
Swift.min(Swift.max(value, lowerBound), upperBound)
}
}### 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.range = range
self.value = range.clamp(wrappedValue)
}
var wrappedValue: Value {
get { value }
set { value = range.clamp(newValue) }
}
}
extension ClosedRange {
func clamp(_ value: Bound) -> Bound {
Swift.min(Swift.max(value, lowerBound), upperBound)
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}### 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 range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}
```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.range = range
self.value = max(min(wrappedValue, range.upperBound), range.lowerBound)
}
var wrappedValue: Value {
get { value }
set { value = max(min(newValue, range.upperBound), range.lowerBound) }
}
}### 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.range = range
self.value = max(min(wrappedValue, range.upperBound), range.lowerBound)
}
var wrappedValue: Value {
get { value }
set { value = max(min(newValue, range.upperBound), range.lowerBound) }
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value {
didSet {
if wrappedValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if wrappedValue > range.upperBound {
wrappedValue = 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 {
var wrappedValue: Value {
didSet {
if wrappedValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if wrappedValue > range.upperBound {
wrappedValue = range.upperBound
}
}
}
let range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = wrappedValue
self.range = range
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}### 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 range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
private var range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}### 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 range: ClosedRange<Value>
private var value: Value
var wrappedValue: Value {
get { value }
set { value = min(max(newValue, range.lowerBound), range.upperBound) }
}
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.range = range
self.value = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("\(event) value: \(value)")
})
var name: String
@Logged(logger: { event, value in
print("\(event) value: \(value)")
})
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("\(event) value: \(value)")
})
var name: String
@Logged(logger: { event, value in
print("\(event) value: \(value)")
})
var age: Int
}
let user = User(name: "John", age: 25)
user.name = "Jane"
user.age = 26
```@Logged(logger: { event, value in // missing argument for parameter 'wrappedValue' in call@Logged(logger: { event, value in // 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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
@Logged(logger: { event, value in
print("User's age was \(event) to \(value)")
})
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
@Logged(logger: { event, value in
print("User's age was \(event) to \(value)")
})
var age: Int
}
var user = User(name: "John", age: 20)
user.name = "Jane"
user.age = 21
```@Logged(logger: { event, value in // missing argument for parameter 'wrappedValue' in call@Logged(logger: { event, value in // 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>: LoggedProtocol {
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: { event, value in
print("\(event) value: \(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>: LoggedProtocol {
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: { event, value in
print("\(event) value: \(value)")
})
var name: String
}
let user = User(name: "John")
user.name = "Jane"
print(user.name)
```@Logged(logger: { event, value in // 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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("User property \(event) value: \(value)")
})
var name: String
@Logged(logger: { event, value in
print("User property \(event) value: \(value)")
})
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("User property \(event) value: \(value)")
})
var name: String
@Logged(logger: { event, value in
print("User property \(event) value: \(value)")
})
var age: Int
}
var user = User(name: "John", age: 20)
user.name = "Jane"
user.age = 21
```@Logged(logger: { event, value in // missing argument for parameter 'wrappedValue' in call@Logged(logger: { event, value in // 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<T>: LoggedProtocol {
var wrappedValue: T
let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
self
}
}
extension Logged {
static subscript(
_enclosingInstance instance: LoggedProtocol,
wrapped wrappedKeyPath: ReferenceWritableKeyPath<LoggedProtocol, Value>,
storage storageKeyPath: ReferenceWritableKeyPath<LoggedProtocol, Logged<Value>>
) -> Value {
get {
let value = instance[keyPath: storageKeyPath].wrappedValue
instance[keyPath: storageKeyPath].logger(.get, value)
return value
}
set {
instance[keyPath: storageKeyPath].logger(.set, newValue)
instance[keyPath: storageKeyPath].wrappedValue = newValue
}
}
}
struct User: LoggedProtocol {
@Logged(logger: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
init(name: String) {
self.name = name
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<T>: LoggedProtocol {
var wrappedValue: T
let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<T> {
self
}
}
extension Logged {
static subscript(
_enclosingInstance instance: LoggedProtocol,
wrapped wrappedKeyPath: ReferenceWritableKeyPath<LoggedProtocol, Value>,
storage storageKeyPath: ReferenceWritableKeyPath<LoggedProtocol, Logged<Value>>
) -> Value {
get {
let value = instance[keyPath: storageKeyPath].wrappedValue
instance[keyPath: storageKeyPath].logger(.get, value)
return value
}
set {
instance[keyPath: storageKeyPath].logger(.set, newValue)
instance[keyPath: storageKeyPath].wrappedValue = newValue
}
}
}
struct User: LoggedProtocol {
@Logged(logger: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
init(name: String) {
self.name = name
}
}
var user = User(name: "John")
user.name = "Jane"
print(user.name)
```_enclosingInstance instance: LoggedProtocol, // use of protocol 'LoggedProtocol' as a type must be written 'any LoggedProtocol'wrapped wrappedKeyPath: ReferenceWritableKeyPath<LoggedProtocol, Value>, // use of protocol 'LoggedProtocol' as a type must be written 'any LoggedProtocol'storage storageKeyPath: ReferenceWritableKeyPath<LoggedProtocol, Logged<Value>> // use of protocol 'LoggedProtocol' as a type must be written 'any LoggedProtocol'struct User: LoggedProtocol { // type 'User' does not conform to protocol 'LoggedProtocol'@Logged(logger: { event, value in // 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>: LoggedProtocol {
private let logger: (Event, Value) -> Void
private var value: Value
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: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
@Logged(logger: { event, value in
print("User's age was \(event) to \(value)")
})
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>: LoggedProtocol {
private let logger: (Event, Value) -> Void
private var value: Value
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: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
@Logged(logger: { event, value in
print("User's age was \(event) to \(value)")
})
var age: Int
}
let user = User(name: "John", age: 20)
user.name = "Jane"
user.age = 21
```@Logged(logger: { event, value in // missing argument for parameter 'wrappedValue' in call@Logged(logger: { event, value in // 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<T>: LoggedProtocol {
private let logger: (Event, T) -> Void
private var value: T
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("User's name was \(event) to \(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<T>: LoggedProtocol {
private let logger: (Event, T) -> Void
private var value: T
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
struct User {
@Logged(logger: { event, value in
print("User's name was \(event) to \(value)")
})
var name: String
}
let user = User(name: "John")
user.name = "Jane"
```@Logged(logger: { event, value in // 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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
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<T>: LoggedProtocol {
private var value: T
private let logger: (Event, T) -> Void
init(wrappedValue: T, logger: @escaping (Event, T) -> Void) {
self.value = wrappedValue
self.logger = logger
}
var wrappedValue: T {
get {
logger(.get, value)
return value
}
set {
logger(.set, newValue)
value = newValue
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 {
let provider: WeatherProvider
var searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 {
let provider: WeatherProvider
var searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 {
let provider: WeatherProvider
var searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}### 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 {
let provider: WeatherProvider
var searchBar: String = ""
required init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBar.append(character)
return nil
case .keyboardDeleteBackwards:
searchBar.removeLast()
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBar)
return .success(city: searchBar, forecast: forecast)
} catch {
return .failure(city: searchBar)
}
}
}
}
```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 {
await balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
await balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```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'await balance // no 'async' operations occur within 'await' expressionprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
return balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
return balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
await balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
await balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```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'await balance // no 'async' operations occur within 'await' expressionprotocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else { 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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else { return false }
balance -= amount
return true
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
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 {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
get async {
balance
}
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
guard balance >= amount else {
return false
}
balance -= amount
return true
}
}
```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 CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let compute: () -> Value
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if value == nil || condition() {
value = compute()
}
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 compute: () -> Value
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if value == nil || condition() {
value = compute()
}
return value!
}
}
}
```value = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let computeValue: () -> Value
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.computeValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if value == nil || condition() {
value = computeValue()
}
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 computeValue: () -> Value
private let condition: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.computeValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if value == nil || condition() {
value = computeValue()
}
return value!
}
set {
value = newValue
}
}
}
```value = computeValue() // 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 compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.compute = wrappedValue
}
var wrappedValue: Value {
get {
if condition() || value == nil {
value = compute()
}
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
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.compute = wrappedValue
}
var wrappedValue: Value {
get {
if condition() || value == nil {
value = compute()
}
return value!
}
}
}
```value = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.computeValue = wrappedValue
}
var wrappedValue: Value {
get {
if condition() || value == nil {
value = computeValue()
}
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
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.computeValue = wrappedValue
}
var wrappedValue: Value {
get {
if condition() || value == nil {
value = computeValue()
}
return value!
}
}
}
```value = computeValue() // 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 compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if condition() || value == nil {
value = compute()
}
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
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if condition() || value == nil {
value = compute()
}
return value!
}
set {
value = newValue
}
}
}
```value = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if condition() {
value = compute()
}
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
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if condition() {
value = compute()
}
return value!
}
}
}
```value = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.computeValue = wrappedValue
}
var wrappedValue: Value {
get {
if condition() {
value = computeValue()
}
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
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.computeValue = wrappedValue
}
var wrappedValue: Value {
get {
if condition() {
value = computeValue()
}
return value!
}
}
}
```value = computeValue() // 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 compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if value == nil || condition() {
value = compute()
}
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
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if value == nil || condition() {
value = compute()
}
return value!
}
set {
value = newValue
}
}
}
```value = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.compute = wrappedValue
}
var wrappedValue: Value {
get {
if condition() {
value = compute()
}
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
private let compute: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.condition = condition
self.compute = wrappedValue
}
var wrappedValue: Value {
get {
if condition() {
value = compute()
}
return value!
}
}
}
```value = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var value: Value?
private let condition: () -> Bool
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.computeValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if value == nil || condition() {
value = computeValue()
}
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
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.computeValue = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
mutating get {
if value == nil || condition() {
value = computeValue()
}
return value!
}
}
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AssignmentPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
return { rhs(lhs($0)) }
}### 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: AssignmentPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
return { rhs(lhs($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AssignmentPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}### 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: AssignmentPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: ForwardApplicationPrecedence
}
func >>> <A, B, C>(
f: @escaping (A) -> B,
g: @escaping (B) -> C
) -> (A) -> C {
return { g(f($0)) }
}### 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: ForwardApplicationPrecedence
}
func >>> <A, B, C>(
f: @escaping (A) -> B,
g: @escaping (B) -> C
) -> (A) -> C {
return { g(f($0)) }
}
```higherThan: ForwardApplicationPrecedence // unknown precedence group 'ForwardApplicationPrecedence'infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AssignmentPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}### 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: AssignmentPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AssignmentPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}### 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: AssignmentPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: TernaryPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
{ a in rhs(lhs(a)) }
}### 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: TernaryPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
{ a in rhs(lhs(a)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AssignmentPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
return { rhs(lhs($0)) }
}### 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: AssignmentPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
return { rhs(lhs($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: AssignmentPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}### 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: AssignmentPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: TernaryPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}### 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: TernaryPrecedence
}
func >>> <A, B, C>(_ f: @escaping (A) -> B, _ g: @escaping (B) -> C) -> (A) -> C {
return { g(f($0)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: TernaryPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
return { rhs(lhs($0)) }
}### 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: TernaryPrecedence
}
func >>> <A, B, C>(lhs: @escaping (A) -> B, rhs: @escaping (B) -> C) -> (A) -> C {
return { rhs(lhs($0)) }
}
```import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hasher = SHA256()
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead < 0 {
break
}
hasher.update(buffer, byteCount: bytesRead)
}
return hasher.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 hasher = SHA256()
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead < 0 {
break
}
hasher.update(buffer, byteCount: bytesRead)
}
return hasher.finalize()
}
```hasher.update(buffer, byteCount: bytesRead) // cannot convert value of type 'UnsafeMutablePointer<UInt8>' to expected argument type 'UnsafeRawBufferPointer'hasher.update(buffer, byteCount: bytesRead) // cannot use mutating member on immutable value: 'hasher' is a 'let' constanthasher.update(buffer, byteCount: bytesRead) // extra argument 'byteCount' in callimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hashComputer = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
let data = Data(bytes: buffer, count: bytesRead)
hashComputer.update(data: data)
}
buffer.deallocate()
}
return hashComputer.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 hashComputer = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
let data = Data(bytes: buffer, count: bytesRead)
hashComputer.update(data: data)
}
buffer.deallocate()
}
return hashComputer.finalize()
}
```hashComputer.update(data: data) // cannot use mutating member on immutable value: 'hashComputer' is a 'let' constantimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hasher = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead < 0 {
return SHA256Digest()
}
if bytesRead > 0 {
hasher.update(buffer, byteCount: bytesRead)
}
buffer.deallocate()
}
return hasher.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 hasher = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead < 0 {
return SHA256Digest()
}
if bytesRead > 0 {
hasher.update(buffer, byteCount: bytesRead)
}
buffer.deallocate()
}
return hasher.finalize()
}
```return SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializershasher.update(buffer, byteCount: bytesRead) // cannot use mutating member on immutable value: 'hasher' is a 'let' constanthasher.update(buffer, byteCount: bytesRead) // extra argument 'byteCount' in callhasher.update(buffer, byteCount: bytesRead) // cannot convert value of type 'UnsafeMutablePointer<UInt8>' to expected argument type 'UnsafeRawBufferPointer'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hashCalculator = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
let data = Data(bytes: buffer, count: bytesRead)
hashCalculator.update(data: data)
}
buffer.deallocate()
}
return hashCalculator.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 hashCalculator = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
let data = Data(bytes: buffer, count: bytesRead)
hashCalculator.update(data: data)
}
buffer.deallocate()
}
return hashCalculator.finalize()
}
```hashCalculator.update(data: data) // cannot use mutating member on immutable value: 'hashCalculator' is a 'let' constantimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hasher = SHA256()
var buffer = Array<UInt8>(repeating: 0, count: bufferSize)
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead < 0 {
return SHA256Digest()
}
hasher.update(buffer: buffer[0..<bytesRead])
}
return hasher.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 hasher = SHA256()
var buffer = Array<UInt8>(repeating: 0, count: bufferSize)
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead < 0 {
return SHA256Digest()
}
hasher.update(buffer: buffer[0..<bytesRead])
}
return hasher.finalize()
}
```return SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializershasher.update(buffer: buffer[0..<bytesRead]) // cannot use mutating member on immutable value: 'hasher' is a 'let' constantimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard inputStream.hasBytesAvailable else {
return nil
}
let hashCalculator = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead < 0 {
return nil
}
let data = Data(bytes: buffer, count: bytesRead)
hashCalculator.update(data: data)
}
return hashCalculator.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? {
guard inputStream.hasBytesAvailable else {
return nil
}
let hashCalculator = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead < 0 {
return nil
}
let data = Data(bytes: buffer, count: bytesRead)
hashCalculator.update(data: data)
}
return hashCalculator.finalize()
}
```hashCalculator.update(data: data) // cannot use mutating member on immutable value: 'hashCalculator' is a 'let' constantimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
guard inputStream.hasBytesAvailable else { return nil }
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hasher = SHA256()
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hasher.update(buffer, byteCount: bytesRead)
}
}
return hasher.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? {
guard inputStream.hasBytesAvailable else { return nil }
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
defer { buffer.deallocate() }
var hasher = SHA256()
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hasher.update(buffer, byteCount: bytesRead)
}
}
return hasher.finalize()
}
```hasher.update(buffer, byteCount: bytesRead) // extra argument 'byteCount' in callhasher.update(buffer, byteCount: bytesRead) // cannot convert value of type 'UnsafeMutablePointer<UInt8>' to expected argument type 'UnsafeRawBufferPointer'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hasher = SHA256()
inputStream.open()
defer { inputStream.close() }
var buffer = [UInt8](repeating: 0, count: bufferSize)
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead < 0 {
if let error = inputStream.streamError {
print("Error reading from input stream: \(error)")
}
break
}
hasher.update(data: Data(bytes: buffer, count: bytesRead))
}
return hasher.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 hasher = SHA256()
inputStream.open()
defer { inputStream.close() }
var buffer = [UInt8](repeating: 0, count: bufferSize)
while inputStream.hasBytesAvailable {
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead < 0 {
if let error = inputStream.streamError {
print("Error reading from input stream: \(error)")
}
break
}
hasher.update(data: Data(bytes: buffer, count: bytesRead))
}
return hasher.finalize()
}
```hasher.update(data: Data(bytes: buffer, count: bytesRead)) // cannot use mutating member on immutable value: 'hasher' is a 'let' constantimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hashCalculator = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
let data = Data(bytes: buffer, count: bytesRead)
hashCalculator.update(data: data)
}
buffer.deallocate()
}
return hashCalculator.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 hashCalculator = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
let data = Data(bytes: buffer, count: bytesRead)
hashCalculator.update(data: data)
}
buffer.deallocate()
}
return hashCalculator.finalize()
}
```hashCalculator.update(data: data) // cannot use mutating member on immutable value: 'hashCalculator' is a 'let' constantimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
let hashCalculator = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hashCalculator.update(buffer, byteCount: bytesRead)
}
buffer.deallocate()
}
return hashCalculator.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 hashCalculator = SHA256()
inputStream.open()
defer { inputStream.close() }
while inputStream.hasBytesAvailable {
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
if bytesRead > 0 {
hashCalculator.update(buffer, byteCount: bytesRead)
}
buffer.deallocate()
}
return hashCalculator.finalize()
}
```hashCalculator.update(buffer, byteCount: bytesRead) // extra argument 'byteCount' in callhashCalculator.update(buffer, byteCount: bytesRead) // cannot convert value of type 'UnsafeMutablePointer<UInt8>' to expected argument type 'UnsafeRawBufferPointer'hashCalculator.update(buffer, byteCount: bytesRead) // cannot use mutating member on immutable value: 'hashCalculator' 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 buffer = tuple16
buffer.15 = 0
self.init(cString: withUnsafePointer(to: buffer) { $0 })
}
}### 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 buffer = tuple16
buffer.15 = 0
self.init(cString: withUnsafePointer(to: buffer) { $0 })
}
}
```self.init(cString: withUnsafePointer(to: buffer) { $0 }) // 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) {
let buffer = UnsafeMutablePointer<Int8>.allocate(capacity: 17)
buffer.initialize(from: tuple16, count: 16)
buffer[16] = 0
self.init(cString: buffer)
buffer.deallocate()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let buffer = UnsafeMutablePointer<Int8>.allocate(capacity: 17)
buffer.initialize(from: tuple16, count: 16)
buffer[16] = 0
self.init(cString: buffer)
buffer.deallocate()
}
}
```buffer.initialize(from: tuple16, count: 16) // cannot convert value of type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)') to expected argument type 'UnsafePointer<Int8>'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var tuple = tuple16
var bytes = [UInt8](repeating: 0, count: 16)
withUnsafeMutableBytes(of: &tuple) { tuplePtr in
tuplePtr.copyBytes(to: &bytes, count: 16)
}
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 tuple = tuple16
var bytes = [UInt8](repeating: 0, count: 16)
withUnsafeMutableBytes(of: &tuple) { tuplePtr in
tuplePtr.copyBytes(to: &bytes, count: 16)
}
self.init(bytes: bytes, encoding: .utf8)!
}
}
```tuplePtr.copyBytes(to: &bytes, count: 16) // missing argument for parameter 'from' in calltuplePtr.copyBytes(to: &bytes, count: 16) // extra arguments at positions #1, #2 in calltypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var tuple = tuple16
var buffer = [UInt8](repeating: 0, count: 16)
for i in 0..<16 {
buffer[i] = UInt8(bitPattern: tuple.15 - i)
}
self = String(bytes: buffer, 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 tuple = tuple16
var buffer = [UInt8](repeating: 0, count: 16)
for i in 0..<16 {
buffer[i] = UInt8(bitPattern: tuple.15 - i)
}
self = String(bytes: buffer, encoding: .utf8)!
}
}
```buffer[i] = UInt8(bitPattern: tuple.15 - i) // cannot convert value of type 'Int' to expected argument type 'Int8'typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
let bytes = [UInt8](tuple16)
self = String(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) {
let bytes = [UInt8](tuple16)
self = String(bytes: bytes, encoding: .utf8)!
}
}
```let bytes = [UInt8](tuple16) // no exact matches in call to initializertypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var buffer = tuple16
buffer.15 = 0
self.init(cString: withUnsafePointer(to: buffer) { $0 })
}
}### 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 buffer = tuple16
buffer.15 = 0
self.init(cString: withUnsafePointer(to: buffer) { $0 })
}
}
```self.init(cString: withUnsafePointer(to: buffer) { $0 }) // 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 buffer = tuple16
buffer.15 = 0
self.init(cString: withUnsafePointer(to: buffer) { $0 })
}
}### 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 buffer = tuple16
buffer.15 = 0
self.init(cString: withUnsafePointer(to: buffer) { $0 })
}
}
```self.init(cString: withUnsafePointer(to: buffer) { $0 }) // 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 buffer = tuple16
buffer.15 = 0
self.init(cString: &buffer.0)
}
}### 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 buffer = tuple16
buffer.15 = 0
self.init(cString: &buffer.0)
}
}
```self.init(cString: &buffer.0) // 'init(cString:)' is deprecated: Use String(_ scalar: Unicode.Scalar) // Fatal error: input of String.init(cString:) must be null-terminatedtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var buffer = tuple16
buffer.15 = 0
self = withUnsafePointer(to: buffer) {
$0.withMemoryRebound(to: UInt8.self, capacity: 16) {
String(cString: $0)
}
}
}
}### 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 buffer = tuple16
buffer.15 = 0
self = withUnsafePointer(to: buffer) {
$0.withMemoryRebound(to: UInt8.self, capacity: 16) {
String(cString: $0)
}
}
}
}
```typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var buffer = tuple16
buffer.15 = 0
self = withUnsafePointer(to: buffer) {
$0.withMemoryRebound(to: UInt8.self, capacity: 16) {
String(cString: $0)
}
}
}
}### 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 buffer = tuple16
buffer.15 = 0
self = withUnsafePointer(to: buffer) {
$0.withMemoryRebound(to: UInt8.self, capacity: 16) {
String(cString: $0)
}
}
}
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs),
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs),
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
let lhsDataSize = CVPixelBufferGetDataSize(lhs)
let rhsDataSize = CVPixelBufferGetDataSize(rhs)
guard lhsDataSize == rhsDataSize else {
return false
}
var lhsBaseAddress: UnsafeMutablePointer<UInt8>?
var rhsBaseAddress: UnsafeMutablePointer<UInt8>?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)?.bindMemory(to: UInt8.self, capacity: lhsDataSize)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)?.bindMemory(to: UInt8.self, capacity: rhsDataSize)
guard let lhsData = lhsBaseAddress, let rhsData = rhsBaseAddress else {
return false
}
return memcmp(lhsData, rhsData, lhsDataSize) == 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 CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs),
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs),
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
let lhsDataSize = CVPixelBufferGetDataSize(lhs)
let rhsDataSize = CVPixelBufferGetDataSize(rhs)
guard lhsDataSize == rhsDataSize else {
return false
}
var lhsBaseAddress: UnsafeMutablePointer<UInt8>?
var rhsBaseAddress: UnsafeMutablePointer<UInt8>?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)?.bindMemory(to: UInt8.self, capacity: lhsDataSize)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)?.bindMemory(to: UInt8.self, capacity: rhsDataSize)
guard let lhsData = lhsBaseAddress, let rhsData = rhsBaseAddress else {
return false
}
return memcmp(lhsData, rhsData, lhsDataSize) == 0
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsAddress = lhsBaseAddress, let rhsAddress = rhsBaseAddress else { return false }
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let lhsHeight = CVPixelBufferGetHeight(lhs)
let rhsHeight = CVPixelBufferGetHeight(rhs)
guard lhsBytesPerRow == rhsBytesPerRow else { return false }
guard lhsHeight == rhsHeight else { return false }
for row in 0..<lhsHeight {
let lhsRow = lhsAddress + row * lhsBytesPerRow
let rhsRow = rhsAddress + row * rhsBytesPerRow
if memcmp(lhsRow, rhsRow, lhsBytesPerRow) != 0 {
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 {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsAddress = lhsBaseAddress, let rhsAddress = rhsBaseAddress else { return false }
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let lhsHeight = CVPixelBufferGetHeight(lhs)
let rhsHeight = CVPixelBufferGetHeight(rhs)
guard lhsBytesPerRow == rhsBytesPerRow else { return false }
guard lhsHeight == rhsHeight else { return false }
for row in 0..<lhsHeight {
let lhsRow = lhsAddress + row * lhsBytesPerRow
let rhsRow = rhsAddress + row * rhsBytesPerRow
if memcmp(lhsRow, rhsRow, lhsBytesPerRow) != 0 {
return false
}
}
return true
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs),
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs),
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsAddress = lhsBaseAddress, let rhsAddress = rhsBaseAddress else {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let height = CVPixelBufferGetHeight(lhs)
for row in 0..<height {
let lhsRowAddress = lhsAddress.advanced(by: row * lhsBytesPerRow)
let rhsRowAddress = rhsAddress.advanced(by: row * rhsBytesPerRow)
if memcmp(lhsRowAddress, rhsRowAddress, lhsBytesPerRow) != 0 {
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 {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs),
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs),
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsAddress = lhsBaseAddress, let rhsAddress = rhsBaseAddress else {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let height = CVPixelBufferGetHeight(lhs)
for row in 0..<height {
let lhsRowAddress = lhsAddress.advanced(by: row * lhsBytesPerRow)
let rhsRowAddress = rhsAddress.advanced(by: row * rhsBytesPerRow)
if memcmp(lhsRowAddress, rhsRowAddress, lhsBytesPerRow) != 0 {
return false
}
}
return true
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsData = lhsBaseAddress, let rhsData = rhsBaseAddress else { return false }
return memcmp(lhsData, rhsData, CVPixelBufferGetDataSize(lhs)) == 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 CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsData = lhsBaseAddress, let rhsData = rhsBaseAddress else { return false }
return memcmp(lhsData, rhsData, CVPixelBufferGetDataSize(lhs)) == 0
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
defer { CVPixelBufferUnlockBaseAddress(lhs, .readOnly) }
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer { CVPixelBufferUnlockBaseAddress(rhs, .readOnly) }
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
return memcmp(lhsBaseAddress, rhsBaseAddress, CVPixelBufferGetDataSize(lhs)) == 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 CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
defer { CVPixelBufferUnlockBaseAddress(lhs, .readOnly) }
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer { CVPixelBufferUnlockBaseAddress(rhs, .readOnly) }
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
return memcmp(lhsBaseAddress, rhsBaseAddress, CVPixelBufferGetDataSize(lhs)) == 0
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) &&
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) &&
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
let lhsDataSize = CVPixelBufferGetDataSize(lhs)
let rhsDataSize = CVPixelBufferGetDataSize(rhs)
guard lhsDataSize == rhsDataSize else {
return false
}
var lhsBaseAddress: UnsafeMutablePointer<UInt8>?
var rhsBaseAddress: UnsafeMutablePointer<UInt8>?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)?.assumingMemoryBound(to: UInt8.self)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)?.assumingMemoryBound(to: UInt8.self)
guard let lhsData = lhsBaseAddress, let rhsData = rhsBaseAddress else {
return false
}
return memcmp(lhsData, rhsData, lhsDataSize) == 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 CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) &&
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) &&
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
let lhsDataSize = CVPixelBufferGetDataSize(lhs)
let rhsDataSize = CVPixelBufferGetDataSize(rhs)
guard lhsDataSize == rhsDataSize else {
return false
}
var lhsBaseAddress: UnsafeMutablePointer<UInt8>?
var rhsBaseAddress: UnsafeMutablePointer<UInt8>?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)?.assumingMemoryBound(to: UInt8.self)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)?.assumingMemoryBound(to: UInt8.self)
guard let lhsData = lhsBaseAddress, let rhsData = rhsBaseAddress else {
return false
}
return memcmp(lhsData, rhsData, lhsDataSize) == 0
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsBaseAddressUnwrapped = lhsBaseAddress else { return false }
guard let rhsBaseAddressUnwrapped = rhsBaseAddress else { return false }
return memcmp(lhsBaseAddressUnwrapped, rhsBaseAddressUnwrapped, CVPixelBufferGetDataSize(lhs)) == 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 CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsBaseAddressUnwrapped = lhsBaseAddress else { return false }
guard let rhsBaseAddressUnwrapped = rhsBaseAddress else { return false }
return memcmp(lhsBaseAddressUnwrapped, rhsBaseAddressUnwrapped, CVPixelBufferGetDataSize(lhs)) == 0
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard lhsBaseAddress != nil, rhsBaseAddress != nil else { return false }
return memcmp(lhsBaseAddress, rhsBaseAddress, CVPixelBufferGetDataSize(lhs)) == 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 CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) else { return false }
guard CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) else { return false }
guard CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else { return false }
guard CVPixelBufferGetDataSize(lhs) == CVPixelBufferGetDataSize(rhs) else { return false }
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard lhsBaseAddress != nil, rhsBaseAddress != nil else { return false }
return memcmp(lhsBaseAddress, rhsBaseAddress, CVPixelBufferGetDataSize(lhs)) == 0
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs),
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs),
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsAddress = lhsBaseAddress, let rhsAddress = rhsBaseAddress else {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let height = CVPixelBufferGetHeight(lhs)
for row in 0..<height {
let lhsRow = lhsAddress.advanced(by: row * lhsBytesPerRow)
let rhsRow = rhsAddress.advanced(by: row * rhsBytesPerRow)
if memcmp(lhsRow, rhsRow, lhsBytesPerRow) != 0 {
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 {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs),
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs),
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
var lhsBaseAddress: UnsafeMutableRawPointer?
var rhsBaseAddress: UnsafeMutableRawPointer?
CVPixelBufferLockBaseAddress(lhs, .readOnly)
CVPixelBufferLockBaseAddress(rhs, .readOnly)
defer {
CVPixelBufferUnlockBaseAddress(lhs, .readOnly)
CVPixelBufferUnlockBaseAddress(rhs, .readOnly)
}
lhsBaseAddress = CVPixelBufferGetBaseAddress(lhs)
rhsBaseAddress = CVPixelBufferGetBaseAddress(rhs)
guard let lhsAddress = lhsBaseAddress, let rhsAddress = rhsBaseAddress else {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let height = CVPixelBufferGetHeight(lhs)
for row in 0..<height {
let lhsRow = lhsAddress.advanced(by: row * lhsBytesPerRow)
let rhsRow = rhsAddress.advanced(by: row * rhsBytesPerRow)
if memcmp(lhsRow, rhsRow, lhsBytesPerRow) != 0 {
return false
}
}
return true
}
```import CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) &&
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) &&
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
let lhsData = CVPixelBufferGetBaseAddress(lhs)
let rhsData = CVPixelBufferGetBaseAddress(rhs)
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let height = CVPixelBufferGetHeight(lhs)
for y in 0..<height {
let lhsRow = lhsData!.advanced(by: y * lhsBytesPerRow)
let rhsRow = rhsData!.advanced(by: y * rhsBytesPerRow)
if memcmp(lhsRow, rhsRow, lhsBytesPerRow) != 0 {
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 {
guard CVPixelBufferGetWidth(lhs) == CVPixelBufferGetWidth(rhs) &&
CVPixelBufferGetHeight(lhs) == CVPixelBufferGetHeight(rhs) &&
CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs) else {
return false
}
let lhsData = CVPixelBufferGetBaseAddress(lhs)
let rhsData = CVPixelBufferGetBaseAddress(rhs)
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
let height = CVPixelBufferGetHeight(lhs)
for y in 0..<height {
let lhsRow = lhsData!.advanced(by: y * lhsBytesPerRow)
let rhsRow = rhsData!.advanced(by: y * rhsBytesPerRow)
if memcmp(lhsRow, rhsRow, lhsBytesPerRow) != 0 {
return false
}
}
return true
}
``` // Fatal error: Unexpectedly found nil while unwrapping an Optional valuestruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
let privateItems = privateItemBuffer.bindMemory(to: PrivateItem.self, capacity: items.count)
for (index, item) in items.enumerated() {
privateItems[index] = item
}
let publicItemBuffer = privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count)
let publicItems = publicItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count)
return Array(UnsafeBufferPointer(start: publicItems, 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] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
let privateItems = privateItemBuffer.bindMemory(to: PrivateItem.self, capacity: items.count)
for (index, item) in items.enumerated() {
privateItems[index] = item
}
let publicItemBuffer = privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count)
let publicItems = publicItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count)
return Array(UnsafeBufferPointer(start: publicItems, count: items.count))
}
```let publicItems = publicItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count) // value of type 'UnsafeMutablePointer<PublicItem>' has no member 'bindMemory'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemSize = MemoryLayout<PublicItem>.size
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemSize == publicItemSize)
assert(privateItemAlignment == publicItemAlignment)
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
let privateItemPointer = privateItemBuffer.bindMemory(to: PrivateItem.self, capacity: items.count)
privateItemPointer.initialize(from: items)
return privateItemPointer.withMemoryRebound(to: PublicItem.self, capacity: items.count) { publicItemPointer in
Array(UnsafeBufferPointer(start: publicItemPointer, 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] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemSize = MemoryLayout<PublicItem>.size
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemSize == publicItemSize)
assert(privateItemAlignment == publicItemAlignment)
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
let privateItemPointer = privateItemBuffer.bindMemory(to: PrivateItem.self, capacity: items.count)
privateItemPointer.initialize(from: items)
return privateItemPointer.withMemoryRebound(to: PublicItem.self, capacity: items.count) { publicItemPointer in
Array(UnsafeBufferPointer(start: publicItemPointer, count: items.count))
}
}
```privateItemPointer.initialize(from: items) // 'initialize(from:)' is unavailable: it will be removed in Swift 5.0. Please use 'UnsafeMutableBufferPointer.initialize(from:)' insteadstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize)
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment)
let privateItemStride = MemoryLayout<PrivateItem>.stride
let publicItemStride = MemoryLayout<PublicItem>.stride
assert(privateItemStride == publicItemStride)
let privateItemCount = items.count
let publicItemCount = privateItemCount
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * privateItemCount, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
let publicItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: publicItemSize * publicItemCount, alignment: publicItemAlignment)
defer { publicItemBuffer.deallocate() }
items.withUnsafeBufferPointer { privateItemBuffer.copyMemory(from: $0.baseAddress!, byteCount: privateItemSize * privateItemCount) }
publicItemBuffer.copyMemory(from: privateItemBuffer, byteCount: publicItemSize * publicItemCount)
return publicItemBuffer.bindMemory(to: PublicItem.self, capacity: publicItemCount)
}### 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 privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize)
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment)
let privateItemStride = MemoryLayout<PrivateItem>.stride
let publicItemStride = MemoryLayout<PublicItem>.stride
assert(privateItemStride == publicItemStride)
let privateItemCount = items.count
let publicItemCount = privateItemCount
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * privateItemCount, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
let publicItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: publicItemSize * publicItemCount, alignment: publicItemAlignment)
defer { publicItemBuffer.deallocate() }
items.withUnsafeBufferPointer { privateItemBuffer.copyMemory(from: $0.baseAddress!, byteCount: privateItemSize * privateItemCount) }
publicItemBuffer.copyMemory(from: privateItemBuffer, byteCount: publicItemSize * publicItemCount)
return publicItemBuffer.bindMemory(to: PublicItem.self, capacity: publicItemCount)
}
```return publicItemBuffer.bindMemory(to: PublicItem.self, capacity: publicItemCount) // cannot convert return expression of type 'UnsafeMutablePointer<PublicItem>' to return type '[PublicItem]'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
assert(MemoryLayout<PrivateItem>.alignment == MemoryLayout<PublicItem>.alignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: MemoryLayout<PrivateItem>.alignment)
defer { privateItemBuffer.deallocate() }
items.withUnsafeBufferPointer { privateItemBuffer.copyMemory(from: $0.baseAddress!, byteCount: privateItemSize * items.count) }
return privateItemBuffer.bindMemory(to: PublicItem.self, capacity: 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] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
assert(MemoryLayout<PrivateItem>.alignment == MemoryLayout<PublicItem>.alignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: MemoryLayout<PrivateItem>.alignment)
defer { privateItemBuffer.deallocate() }
items.withUnsafeBufferPointer { privateItemBuffer.copyMemory(from: $0.baseAddress!, byteCount: privateItemSize * items.count) }
return privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count)
}
```return privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count) // cannot convert return expression of type 'UnsafeMutablePointer<PublicItem>' to return type '[PublicItem]'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemSize = MemoryLayout<PublicItem>.size
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemSize == publicItemSize)
assert(privateItemAlignment == publicItemAlignment)
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
items.withUnsafeBufferPointer { privateItemBuffer.copyMemory(from: $0.baseAddress!, byteCount: privateItemSize * items.count) }
return privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count).pointee
}### 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 privateItemSize = MemoryLayout<PrivateItem>.size
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemSize = MemoryLayout<PublicItem>.size
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemSize == publicItemSize)
assert(privateItemAlignment == publicItemAlignment)
let privateItemBuffer = UnsafeMutableRawPointer.allocate(byteCount: privateItemSize * items.count, alignment: privateItemAlignment)
defer { privateItemBuffer.deallocate() }
items.withUnsafeBufferPointer { privateItemBuffer.copyMemory(from: $0.baseAddress!, byteCount: privateItemSize * items.count) }
return privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count).pointee
}
```return privateItemBuffer.bindMemory(to: PublicItem.self, capacity: items.count).pointee // cannot convert return expression of type 'PublicItem' to return type '[PublicItem]'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemSize = MemoryLayout<PublicItem>.size
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemSize == publicItemSize)
assert(privateItemAlignment == publicItemAlignment)
let privateItemsData = Data(bytes: items, count: privateItemSize * items.count)
return privateItemsData.withUnsafeBytes {
$0.bindMemory(to: PublicItem.self)
}.baseAddress!.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] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemSize = MemoryLayout<PublicItem>.size
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemSize == publicItemSize)
assert(privateItemAlignment == publicItemAlignment)
let privateItemsData = Data(bytes: items, count: privateItemSize * items.count)
return privateItemsData.withUnsafeBytes {
$0.bindMemory(to: PublicItem.self)
}.baseAddress!.withMemoryRebound(to: PublicItem.self, capacity: items.count) {
Array(UnsafeBufferPointer(start: $0, count: items.count))
}
}
```struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemPointer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: items.count)
defer { privateItemPointer.deallocate() }
privateItemPointer.initialize(from: items, count: items.count)
let publicItemPointer = privateItemPointer.withMemoryRebound(to: PublicItem.self, capacity: items.count) { $0 }
return Array(UnsafeBufferPointer(start: publicItemPointer, 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] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemPointer = UnsafeMutablePointer<PrivateItem>.allocate(capacity: items.count)
defer { privateItemPointer.deallocate() }
privateItemPointer.initialize(from: items, count: items.count)
let publicItemPointer = privateItemPointer.withMemoryRebound(to: PublicItem.self, capacity: items.count) { $0 }
return Array(UnsafeBufferPointer(start: publicItemPointer, count: items.count))
}
```struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemsData = Data(bytes: items, count: items.count * privateItemSize)
let publicItems = privateItemsData.withUnsafeBytes {
$0.bindMemory(to: PublicItem.self).baseAddress!
}
return Array(UnsafeBufferPointer(start: publicItems, 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] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
let privateItemsData = Data(bytes: items, count: items.count * privateItemSize)
let publicItems = privateItemsData.withUnsafeBytes {
$0.bindMemory(to: PublicItem.self).baseAddress!
}
return Array(UnsafeBufferPointer(start: publicItems, count: items.count))
}
```struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize)
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment)
return items.withUnsafeBufferPointer { buffer in
buffer.baseAddress!.withMemoryRebound(to: PublicItem.self, capacity: buffer.count) {
Array(UnsafeBufferPointer(start: $0, count: buffer.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 privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize)
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment)
return items.withUnsafeBufferPointer { buffer in
buffer.baseAddress!.withMemoryRebound(to: PublicItem.self, capacity: buffer.count) {
Array(UnsafeBufferPointer(start: $0, count: buffer.count))
}
}
}
```struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
let privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
return items.withUnsafeBufferPointer { buffer in
buffer.baseAddress!.withMemoryRebound(to: PublicItem.self, capacity: buffer.count) {
Array(UnsafeBufferPointer(start: $0, count: buffer.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 privateItemSize = MemoryLayout<PrivateItem>.size
let publicItemSize = MemoryLayout<PublicItem>.size
assert(privateItemSize == publicItemSize, "PrivateItem and PublicItem must have the same size")
let privateItemAlignment = MemoryLayout<PrivateItem>.alignment
let publicItemAlignment = MemoryLayout<PublicItem>.alignment
assert(privateItemAlignment == publicItemAlignment, "PrivateItem and PublicItem must have the same alignment")
return items.withUnsafeBufferPointer { buffer in
buffer.baseAddress!.withMemoryRebound(to: PublicItem.self, capacity: buffer.count) {
Array(UnsafeBufferPointer(start: $0, count: buffer.count))
}
}
}
```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 lhsValue = Int(lhsComponent) ?? 0
let rhsValue = Int(rhsComponent) ?? 0
if lhsValue < rhsValue {
return .orderedAscending
} else if lhsValue > rhsValue {
return .orderedDescending
}
}
if lhsComponents.count < rhsComponents.count {
return .orderedAscending
} else if lhsComponents.count > rhsComponents.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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsValue = Int(lhsComponent) ?? 0
let rhsValue = Int(rhsComponent) ?? 0
if lhsValue < rhsValue {
return .orderedAscending
} else if lhsValue > rhsValue {
return .orderedDescending
}
}
if lhsComponents.count < rhsComponents.count {
return .orderedAscending
} else if lhsComponents.count > rhsComponents.count {
return .orderedDescending
}
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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsValue = Int(lhsComponent) ?? 0
let rhsValue = Int(rhsComponent) ?? 0
if lhsValue < rhsValue {
return .orderedAscending
} else if lhsValue > rhsValue {
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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsValue = Int(lhsComponent) ?? 0
let rhsValue = Int(rhsComponent) ?? 0
if lhsValue < rhsValue {
return .orderedAscending
} else if lhsValue > rhsValue {
return .orderedDescending
}
}
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 maxComponentsCount = max(lhsComponents.count, rhsComponents.count)
for i in 0..<maxComponentsCount {
let lhsComponent = lhsComponents[safe: i]
let rhsComponent = rhsComponents[safe: i]
if lhsComponent == nil && rhsComponent == nil {
break
}
if lhsComponent == nil {
return .orderedAscending
}
if rhsComponent == nil {
return .orderedDescending
}
let lhsVersion = Version(string: lhsComponent!)
let rhsVersion = Version(string: rhsComponent!)
if lhsVersion.major != rhsVersion.major {
return lhsVersion.major < rhsVersion.major ? .orderedAscending : .orderedDescending
}
if lhsVersion.minor != rhsVersion.minor {
return lhsVersion.minor < rhsVersion.minor ? .orderedAscending : .orderedDescending
}
if lhsVersion.patch != rhsVersion.patch {
return lhsVersion.patch < rhsVersion.patch ? .orderedAscending : .orderedDescending
}
if lhsVersion.tag != rhsVersion.tag {
return lhsVersion.tag < rhsVersion.tag ? .orderedAscending : .orderedDescending
}
}
return .orderedSame
}
private extension Array {
subscript(safe index: Int) -> Element? {
guard index >= 0, index < count else {
return nil
}
return self[index]
}
}
private struct Version {
let major: Int
let minor: Int
let patch: Int
let tag: String
init(string: String) {
let components = string.components(separatedBy: ["-", "."])
major = Int(components[safe: 0] ?? "") ?? 0
minor = Int(components[safe: 1] ?? "") ?? 0
patch = Int(components[safe: 2] ?? "") ?? 0
tag = components[safe: 3] ?? ""
}
}
private extension String {
var isAlpha: Bool {
return hasPrefix("alpha")
}
var isBeta: Bool {
return hasPrefix("beta")
}
}
private extension ComparisonResult {
static func < (lhs: ComparisonResult, rhs: ComparisonResult) -> Bool {
switch (lhs, rhs) {
case (.orderedAscending, _):
return true
case (.orderedSame, _):
return true
case (_, .orderedDescending):
return true
default:
return false
}
}
}### 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 maxComponentsCount = max(lhsComponents.count, rhsComponents.count)
for i in 0..<maxComponentsCount {
let lhsComponent = lhsComponents[safe: i]
let rhsComponent = rhsComponents[safe: i]
if lhsComponent == nil && rhsComponent == nil {
break
}
if lhsComponent == nil {
return .orderedAscending
}
if rhsComponent == nil {
return .orderedDescending
}
let lhsVersion = Version(string: lhsComponent!)
let rhsVersion = Version(string: rhsComponent!)
if lhsVersion.major != rhsVersion.major {
return lhsVersion.major < rhsVersion.major ? .orderedAscending : .orderedDescending
}
if lhsVersion.minor != rhsVersion.minor {
return lhsVersion.minor < rhsVersion.minor ? .orderedAscending : .orderedDescending
}
if lhsVersion.patch != rhsVersion.patch {
return lhsVersion.patch < rhsVersion.patch ? .orderedAscending : .orderedDescending
}
if lhsVersion.tag != rhsVersion.tag {
return lhsVersion.tag < rhsVersion.tag ? .orderedAscending : .orderedDescending
}
}
return .orderedSame
}
private extension Array {
subscript(safe index: Int) -> Element? {
guard index >= 0, index < count else {
return nil
}
return self[index]
}
}
private struct Version {
let major: Int
let minor: Int
let patch: Int
let tag: String
init(string: String) {
let components = string.components(separatedBy: ["-", "."])
major = Int(components[safe: 0] ?? "") ?? 0
minor = Int(components[safe: 1] ?? "") ?? 0
patch = Int(components[safe: 2] ?? "") ?? 0
tag = components[safe: 3] ?? ""
}
}
private extension String {
var isAlpha: Bool {
return hasPrefix("alpha")
}
var isBeta: Bool {
return hasPrefix("beta")
}
}
private extension ComparisonResult {
static func < (lhs: ComparisonResult, rhs: ComparisonResult) -> Bool {
switch (lhs, rhs) {
case (.orderedAscending, _):
return true
case (.orderedSame, _):
return true
case (_, .orderedDescending):
return true
default:
return false
}
}
}
``` // 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 {
continue
}
let lhsVersion = lhsComponent.components(separatedBy: ["-", "+"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "+"])
if lhsVersion[0] == rhsVersion[0] {
if lhsVersion.count == 1 {
return .orderedDescending
} else if rhsVersion.count == 1 {
return .orderedAscending
} else {
if lhsVersion[1] == rhsVersion[1] {
if lhsVersion[2] < rhsVersion[2] {
return .orderedAscending
} else {
return .orderedDescending
}
} else {
if lhsVersion[1] < rhsVersion[1] {
return .orderedAscending
} else {
return .orderedDescending
}
}
}
} else {
if lhsVersion[0] < rhsVersion[0] {
return .orderedAscending
} else {
return .orderedDescending
}
}
}
if lhsComponents.count < rhsComponents.count {
return .orderedAscending
} else if lhsComponents.count > rhsComponents.count {
return .orderedDescending
} else {
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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if lhsComponent == rhsComponent {
continue
}
let lhsVersion = lhsComponent.components(separatedBy: ["-", "+"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "+"])
if lhsVersion[0] == rhsVersion[0] {
if lhsVersion.count == 1 {
return .orderedDescending
} else if rhsVersion.count == 1 {
return .orderedAscending
} else {
if lhsVersion[1] == rhsVersion[1] {
if lhsVersion[2] < rhsVersion[2] {
return .orderedAscending
} else {
return .orderedDescending
}
} else {
if lhsVersion[1] < rhsVersion[1] {
return .orderedAscending
} else {
return .orderedDescending
}
}
}
} else {
if lhsVersion[0] < rhsVersion[0] {
return .orderedAscending
} else {
return .orderedDescending
}
}
}
if lhsComponents.count < rhsComponents.count {
return .orderedAscending
} else if lhsComponents.count > rhsComponents.count {
return .orderedDescending
} else {
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: ".")
for (index, lhsComponent) in lhsComponents.enumerated() {
guard index < rhsComponents.count else {
return .orderedDescending
}
let rhsComponent = rhsComponents[index]
if lhsComponent == rhsComponent {
continue
}
if lhsComponent.hasPrefix("alpha") {
return .orderedAscending
} else if rhsComponent.hasPrefix("alpha") {
return .orderedDescending
} else if lhsComponent.hasPrefix("beta") {
return .orderedAscending
} else if rhsComponent.hasPrefix("beta") {
return .orderedDescending
} else if let lhsNumber = Int(lhsComponent), let rhsNumber = Int(rhsComponent) {
if lhsNumber < rhsNumber {
return .orderedAscending
} else if lhsNumber > rhsNumber {
return .orderedDescending
}
} else {
return .orderedSame
}
}
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: ".")
for (index, lhsComponent) in lhsComponents.enumerated() {
guard index < rhsComponents.count else {
return .orderedDescending
}
let rhsComponent = rhsComponents[index]
if lhsComponent == rhsComponent {
continue
}
if lhsComponent.hasPrefix("alpha") {
return .orderedAscending
} else if rhsComponent.hasPrefix("alpha") {
return .orderedDescending
} else if lhsComponent.hasPrefix("beta") {
return .orderedAscending
} else if rhsComponent.hasPrefix("beta") {
return .orderedDescending
} else if let lhsNumber = Int(lhsComponent), let rhsNumber = Int(rhsComponent) {
if lhsNumber < rhsNumber {
return .orderedAscending
} else if lhsNumber > rhsNumber {
return .orderedDescending
}
} else {
return .orderedSame
}
}
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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsVersion = lhsComponent.components(separatedBy: ["-", "a", "b"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "a", "b"])
if lhsVersion[0] != rhsVersion[0] {
return Int(lhsVersion[0])! < Int(rhsVersion[0])! ? .orderedAscending : .orderedDescending
}
if lhsVersion.count > 1 {
if rhsVersion.count > 1 {
if lhsVersion[1] != rhsVersion[1] {
return Int(lhsVersion[1])! < Int(rhsVersion[1])! ? .orderedAscending : .orderedDescending
}
} else {
return .orderedDescending
}
} else if rhsVersion.count > 1 {
return .orderedAscending
}
}
return lhsComponents.count == rhsComponents.count ? .orderedSame : 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 lhsVersion = lhsComponent.components(separatedBy: ["-", "a", "b"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "a", "b"])
if lhsVersion[0] != rhsVersion[0] {
return Int(lhsVersion[0])! < Int(rhsVersion[0])! ? .orderedAscending : .orderedDescending
}
if lhsVersion.count > 1 {
if rhsVersion.count > 1 {
if lhsVersion[1] != rhsVersion[1] {
return Int(lhsVersion[1])! < Int(rhsVersion[1])! ? .orderedAscending : .orderedDescending
}
} else {
return .orderedDescending
}
} else if rhsVersion.count > 1 {
return .orderedAscending
}
}
return lhsComponents.count == rhsComponents.count ? .orderedSame : 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 lhsNumber = Int(lhsComponent) ?? 0
let rhsNumber = Int(rhsComponent) ?? 0
if lhsNumber != rhsNumber {
return lhsNumber < rhsNumber ? .orderedAscending : .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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsNumber = Int(lhsComponent) ?? 0
let rhsNumber = Int(rhsComponent) ?? 0
if lhsNumber != rhsNumber {
return lhsNumber < rhsNumber ? .orderedAscending : .orderedDescending
}
}
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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsVersion = lhsComponent.components(separatedBy: ["-", "+"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "+"])
let lhsVersionNumber = Int(lhsVersion[0]) ?? 0
let rhsVersionNumber = Int(rhsVersion[0]) ?? 0
if lhsVersionNumber != rhsVersionNumber {
return lhsVersionNumber < rhsVersionNumber ? .orderedAscending : .orderedDescending
}
if lhsVersion.count > 1 {
if rhsVersion.count > 1 {
let lhsVersionTag = lhsVersion[1]
let rhsVersionTag = rhsVersion[1]
if lhsVersionTag != rhsVersionTag {
return lhsVersionTag < rhsVersionTag ? .orderedAscending : .orderedDescending
}
} else {
return .orderedDescending
}
} else if rhsVersion.count > 1 {
return .orderedAscending
}
}
if lhsComponents.count != rhsComponents.count {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsVersion = lhsComponent.components(separatedBy: ["-", "+"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "+"])
let lhsVersionNumber = Int(lhsVersion[0]) ?? 0
let rhsVersionNumber = Int(rhsVersion[0]) ?? 0
if lhsVersionNumber != rhsVersionNumber {
return lhsVersionNumber < rhsVersionNumber ? .orderedAscending : .orderedDescending
}
if lhsVersion.count > 1 {
if rhsVersion.count > 1 {
let lhsVersionTag = lhsVersion[1]
let rhsVersionTag = rhsVersion[1]
if lhsVersionTag != rhsVersionTag {
return lhsVersionTag < rhsVersionTag ? .orderedAscending : .orderedDescending
}
} else {
return .orderedDescending
}
} else if rhsVersion.count > 1 {
return .orderedAscending
}
}
if lhsComponents.count != rhsComponents.count {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsVersion = lhsComponent.components(separatedBy: ["-", "+"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "+"])
let lhsVersionNumber = Int(lhsVersion[0]) ?? 0
let rhsVersionNumber = Int(rhsVersion[0]) ?? 0
if lhsVersionNumber != rhsVersionNumber {
return lhsVersionNumber < rhsVersionNumber ? .orderedAscending : .orderedDescending
}
if lhsVersion.count > 1 {
if rhsVersion.count > 1 {
let lhsTag = lhsVersion[1]
let rhsTag = rhsVersion[1]
if lhsTag != rhsTag {
return lhsTag < rhsTag ? .orderedAscending : .orderedDescending
}
} else {
return .orderedDescending
}
} else if rhsVersion.count > 1 {
return .orderedAscending
}
}
if lhsComponents.count != rhsComponents.count {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .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: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
let lhsVersion = lhsComponent.components(separatedBy: ["-", "+"])
let rhsVersion = rhsComponent.components(separatedBy: ["-", "+"])
let lhsVersionNumber = Int(lhsVersion[0]) ?? 0
let rhsVersionNumber = Int(rhsVersion[0]) ?? 0
if lhsVersionNumber != rhsVersionNumber {
return lhsVersionNumber < rhsVersionNumber ? .orderedAscending : .orderedDescending
}
if lhsVersion.count > 1 {
if rhsVersion.count > 1 {
let lhsTag = lhsVersion[1]
let rhsTag = rhsVersion[1]
if lhsTag != rhsTag {
return lhsTag < rhsTag ? .orderedAscending : .orderedDescending
}
} else {
return .orderedDescending
}
} else if rhsVersion.count > 1 {
return .orderedAscending
}
}
if lhsComponents.count != rhsComponents.count {
return lhsComponents.count < rhsComponents.count ? .orderedAscending : .orderedDescending
}
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 maxComponentsCount = max(lhsComponents.count, rhsComponents.count)
for i in 0..<maxComponentsCount {
let lhsComponent = lhsComponents[safe: i]
let rhsComponent = rhsComponents[safe: i]
if lhsComponent == nil && rhsComponent == nil {
break
}
if lhsComponent == nil {
return .orderedAscending
}
if rhsComponent == nil {
return .orderedDescending
}
let lhsComponentParts = lhsComponent!.components(separatedBy: ["-", "+"])
let rhsComponentParts = rhsComponent!.components(separatedBy: ["-", "+"])
let lhsVersion = Int(lhsComponentParts[0]) ?? 0
let rhsVersion = Int(rhsComponentParts[0]) ?? 0
if lhsVersion != rhsVersion {
return lhsVersion < rhsVersion ? .orderedAscending : .orderedDescending
}
if lhsComponentParts.count > 1 && rhsComponentParts.count > 1 {
let lhsTag = lhsComponentParts[1]
let rhsTag = rhsComponentParts[1]
if lhsTag != rhsTag {
return lhsTag < rhsTag ? .orderedAscending : .orderedDescending
}
}
}
return .orderedSame
}
extension Array {
subscript(safe index: Int) -> Element? {
return indices.contains(index) ? self[index] : nil
}
}### 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 maxComponentsCount = max(lhsComponents.count, rhsComponents.count)
for i in 0..<maxComponentsCount {
let lhsComponent = lhsComponents[safe: i]
let rhsComponent = rhsComponents[safe: i]
if lhsComponent == nil && rhsComponent == nil {
break
}
if lhsComponent == nil {
return .orderedAscending
}
if rhsComponent == nil {
return .orderedDescending
}
let lhsComponentParts = lhsComponent!.components(separatedBy: ["-", "+"])
let rhsComponentParts = rhsComponent!.components(separatedBy: ["-", "+"])
let lhsVersion = Int(lhsComponentParts[0]) ?? 0
let rhsVersion = Int(rhsComponentParts[0]) ?? 0
if lhsVersion != rhsVersion {
return lhsVersion < rhsVersion ? .orderedAscending : .orderedDescending
}
if lhsComponentParts.count > 1 && rhsComponentParts.count > 1 {
let lhsTag = lhsComponentParts[1]
let rhsTag = rhsComponentParts[1]
if lhsTag != rhsTag {
return lhsTag < rhsTag ? .orderedAscending : .orderedDescending
}
}
}
return .orderedSame
}
extension Array {
subscript(safe index: Int) -> Element? {
return indices.contains(index) ? self[index] : nil
}
}
``` // XCTAssertTrue failed