Metadata
| Key | Value |
|---|---|
| engine | transformers |
| prompt | instruct |
| temp | 0.2 |
| top_p | 0.95 |
| max_new_tokens | 1024 |
| n_completions | 10 |
Solutions
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} 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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} 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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} 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 {
if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}
```if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON { // variable 'json' was never mutated; consider changing to 'let' constanttypealias 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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} 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 {
if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}
```if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON { // variable 'json' was never mutated; consider changing to 'let' constanttypealias 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 {
if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
}
} catch {
throw ParsingError.internalError(error)
}
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: nil))
}### 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 {
if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
}
} catch {
throw ParsingError.internalError(error)
}
throw ParsingError.internalError(NSError(domain: "", code: -1, userInfo: nil))
}
```if var json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON { // variable 'json' was never mutated; consider changing to 'let' constanttypealias 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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
}
} catch {
throw ParsingError.internalError(error)
}
throw ParsingError.internalError(NSError(domain: "", code: 0, userInfo: nil))
}### 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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
}
} catch {
throw ParsingError.internalError(error)
}
throw ParsingError.internalError(NSError(domain: "", code: 0, userInfo: nil))
}
```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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} 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 {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
JSON parser, returns custom error type in case of failures.
### Response:
```swift
typealias JSON = [String: Any]
enum ParsingError: Error {
case invalidInput
case internalError(Error)
}
func parse(string: String) throws -> JSON {
guard let data = string.data(using: .utf8) else {
throw ParsingError.invalidInput
}
do {
if let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON {
return json
} else {
throw ParsingError.invalidInput
}
} catch {
throw ParsingError.internalError(error)
}
}
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"], children: [
HTMLNode.text("Swift Eval")
])
])
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):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"])
])
let html = generate(tree)
print(html)
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"])
])
let html = generate(tree)
print(html)
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var result = "<\(name)"
for (key, value) in attributes {
result += " \(key)=\"\(value)\""
}
result += ">"
for child in children {
result += generate(child)
}
result += "</\(name)>"
return result
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "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):
var html = "<\(name)"
for (key, value) in attributes {
html.append(" \(key)=\"\(value)\"")
}
html.append(">")
for child in children {
html.append(generate(child))
}
html.append("</\(name)>")
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html.append(" \(key)=\"\(value)\"")
}
html.append(">")
for child in children {
html.append(generate(child))
}
html.append("</\(name)>")
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"])
])
let html = generate(tree)
print(html)
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html.append(" \(key)=\"\(value)\"")
}
html.append(">")
for child in children {
html.append(generate(child))
}
html.append("</\(name)>")
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html.append(" \(key)=\"\(value)\"")
}
html.append(">")
for child in children {
html.append(generate(child))
}
html.append("</\(name)>")
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"], children: [
HTMLNode.text("")
])
])
let html = generate(tree)
print(html)
```indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "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):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"], children: [
HTMLNode.text("")
])
])
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):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"], children: [
HTMLNode.text("Swift Eval")
])
])
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):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
HTML generator from predefined elements tree.
Output with standart HTML like this "<div><a href="swifteval"></a></div>"
### Response:
```swift
indirect enum HTMLNode {
case text(_ content: String)
case element(_ name: String, attributes: [String : String] = [:], children: [Self] = [])
}
func generate(_ tree: HTMLNode) -> String {
switch tree {
case .text(let content):
return content
case .element(let name, let attributes, let children):
var html = "<\(name)"
for (key, value) in attributes {
html += " \(key)=\"\(value)\""
}
html += ">"
for child in children {
html += generate(child)
}
html += "</\(name)>"
return html
}
}
let tree = HTMLNode.element("div", children: [
HTMLNode.element("a", attributes: ["href": "swifteval"])
])
let html = generate(tree)
print(html)
```enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
var number: String = ""
func performOperation() {
guard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else {
throw CalculateError.invalidInput
}
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
guard operand2 != 0 else {
throw CalculateError.invalidInput
}
stack.append(operand1 / operand2)
default:
throw CalculateError.invalidInput
}
}
for char in string {
switch char {
case "+", "-", "*", "/":
operators.append(char)
if let num = Double(number) {
stack.append(num)
number = ""
}
case "(":
operators.append(char)
case ")":
if let num = Double(number) {
stack.append(num)
number = ""
}
while !operators.isEmpty && operators.last != "(" {
performOperation()
}
operators.removeLast()
default:
number.append(char)
}
}
if let num = Double(number) {
stack.append(num)
}
while !operators.isEmpty {
performOperation()
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
var number: String = ""
func performOperation() {
guard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else {
throw CalculateError.invalidInput
}
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
guard operand2 != 0 else {
throw CalculateError.invalidInput
}
stack.append(operand1 / operand2)
default:
throw CalculateError.invalidInput
}
}
for char in string {
switch char {
case "+", "-", "*", "/":
operators.append(char)
if let num = Double(number) {
stack.append(num)
number = ""
}
case "(":
operators.append(char)
case ")":
if let num = Double(number) {
stack.append(num)
number = ""
}
while !operators.isEmpty && operators.last != "(" {
performOperation()
}
operators.removeLast()
default:
number.append(char)
}
}
if let num = Double(number) {
stack.append(num)
}
while !operators.isEmpty {
performOperation()
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
```guard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else { // consecutive statements on a line must be separated by ';'guard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else { // unwrap condition requires a valid identifierguard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else { // expected patternguard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else { // expected 'else' after 'guard' conditionguard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else { // operator must be declared as 'prefix', 'postfix', or 'infix'guard let operand2 = stack.popLast(), let operand1 = stack.popLast(), let operator = operators.popLast() else { // 'operator' may only be declared at file scopeswitch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard stack.count >= 2 else { return }
let operand2 = stack.removeLast()
let operand1 = stack.removeLast()
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
guard operand2 != 0 else { throw CalculateError.invalidInput }
stack.append(operand1 / operand2)
default:
break
}
}
var number: Double = 0
for char in string {
if let digit = Double(String(char)) {
number = number * 10 + digit
} else {
stack.append(number)
number = 0
if char == "(" {
operators.append(char)
} else if char == ")" {
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
if !operators.isEmpty {
operators.removeLast()
}
} else {
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
operators.append(char)
}
}
}
stack.append(number)
while !operators.isEmpty {
applyOperator(operators.removeLast())
}
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 {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard stack.count >= 2 else { return }
let operand2 = stack.removeLast()
let operand1 = stack.removeLast()
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
guard operand2 != 0 else { throw CalculateError.invalidInput }
stack.append(operand1 / operand2)
default:
break
}
}
var number: Double = 0
for char in string {
if let digit = Double(String(char)) {
number = number * 10 + digit
} else {
stack.append(number)
number = 0
if char == "(" {
operators.append(char)
} else if char == ")" {
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
if !operators.isEmpty {
operators.removeLast()
}
} else {
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
operators.append(char)
}
}
}
stack.append(number)
while !operators.isEmpty {
applyOperator(operators.removeLast())
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.first!
}
```switch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard stack.count >= 2 else { return }
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else { throw CalculateError.invalidInput }
stack.append(left / right)
default:
break
}
}
var number: Double = 0
var numberHasDigits: Bool = false
for char in string {
if let digit = Int(String(char)), char.isNumber {
number = number * 10 + Double(digit)
numberHasDigits = true
} else {
if numberHasDigits {
stack.append(number)
number = 0
numberHasDigits = false
}
switch char {
case "+", "-":
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
operators.append(char)
case "*", "/":
while !operators.isEmpty && (operators.last == "*" || operators.last == "/") {
applyOperator(operators.removeLast())
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
if !operators.isEmpty && operators.last == "(" {
operators.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if numberHasDigits {
stack.append(number)
}
while !operators.isEmpty {
applyOperator(operators.removeLast())
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.removeLast()
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard stack.count >= 2 else { return }
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else { throw CalculateError.invalidInput }
stack.append(left / right)
default:
break
}
}
var number: Double = 0
var numberHasDigits: Bool = false
for char in string {
if let digit = Int(String(char)), char.isNumber {
number = number * 10 + Double(digit)
numberHasDigits = true
} else {
if numberHasDigits {
stack.append(number)
number = 0
numberHasDigits = false
}
switch char {
case "+", "-":
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
operators.append(char)
case "*", "/":
while !operators.isEmpty && (operators.last == "*" || operators.last == "/") {
applyOperator(operators.removeLast())
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last != "(" {
applyOperator(operators.removeLast())
}
if !operators.isEmpty && operators.last == "(" {
operators.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if numberHasDigits {
stack.append(number)
}
while !operators.isEmpty {
applyOperator(operators.removeLast())
}
guard stack.count == 1 else { throw CalculateError.invalidInput }
return stack.removeLast()
}
```switch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard let operand2 = stack.popLast(), let operand1 = stack.popLast() else {
throw CalculateError.invalidInput
}
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
if operand2 == 0 {
throw CalculateError.invalidInput
}
stack.append(operand1 / operand2)
default:
break
}
}
var number: Double = 0
var numberHasDigits: Bool = false
for char in string {
if let digit = Int(String(char)), char.isNumber {
number = number * 10 + Double(digit)
numberHasDigits = true
} else {
if numberHasDigits {
stack.append(number)
number = 0
numberHasDigits = false
}
switch char {
case "+", "-", "*", "/":
while let lastOperator = operators.last,
lastOperator != "(",
let precedence = "+-*/".firstIndex(of: lastOperator),
let operatorPrecedence = "+-*/".firstIndex(of: char),
precedence <= operatorPrecedence {
applyOperator(operators.removeLast())
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while let lastOperator = operators.popLast(), lastOperator != "(" {
applyOperator(lastOperator)
}
default:
break
}
}
}
if numberHasDigits {
stack.append(number)
}
while !operators.isEmpty {
applyOperator(operators.removeLast())
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard let operand2 = stack.popLast(), let operand1 = stack.popLast() else {
throw CalculateError.invalidInput
}
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
if operand2 == 0 {
throw CalculateError.invalidInput
}
stack.append(operand1 / operand2)
default:
break
}
}
var number: Double = 0
var numberHasDigits: Bool = false
for char in string {
if let digit = Int(String(char)), char.isNumber {
number = number * 10 + Double(digit)
numberHasDigits = true
} else {
if numberHasDigits {
stack.append(number)
number = 0
numberHasDigits = false
}
switch char {
case "+", "-", "*", "/":
while let lastOperator = operators.last,
lastOperator != "(",
let precedence = "+-*/".firstIndex(of: lastOperator),
let operatorPrecedence = "+-*/".firstIndex(of: char),
precedence <= operatorPrecedence {
applyOperator(operators.removeLast())
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while let lastOperator = operators.popLast(), lastOperator != "(" {
applyOperator(lastOperator)
}
default:
break
}
}
}
if numberHasDigits {
stack.append(number)
}
while !operators.isEmpty {
applyOperator(operators.removeLast())
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
```throw CalculateError.invalidInput // error is not handled because the enclosing function is not declared 'throws'switch operator { // expected operator name in operator declarationswitch operator { // expected expression in 'switch' statementenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
var number: String = ""
func performOperation() {
guard let operand2 = stack.popLast(), let operand1 = stack.popLast() else {
throw CalculateError.invalidInput
}
let operator = operators.popLast()
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
if operand2 == 0 {
throw CalculateError.invalidInput
}
stack.append(operand1 / operand2)
default:
break
}
}
for char in string {
if char.isNumber {
number.append(char)
} else {
if !number.isEmpty {
stack.append(Double(number) ?? 0)
number = ""
}
switch char {
case "+", "-":
while !operators.isEmpty && operators.last != "(" {
performOperation()
}
operators.append(char)
case "*", "/":
while !operators.isEmpty && (operators.last == "*" || operators.last == "/") {
performOperation()
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last != "(" {
performOperation()
}
operators.popLast()
default:
break
}
}
}
if !number.isEmpty {
stack.append(Double(number) ?? 0)
}
while !operators.isEmpty {
performOperation()
}
guard let result = stack.last 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 {
var stack: [Double] = []
var operators: [Character] = []
var number: String = ""
func performOperation() {
guard let operand2 = stack.popLast(), let operand1 = stack.popLast() else {
throw CalculateError.invalidInput
}
let operator = operators.popLast()
switch operator {
case "+":
stack.append(operand1 + operand2)
case "-":
stack.append(operand1 - operand2)
case "*":
stack.append(operand1 * operand2)
case "/":
if operand2 == 0 {
throw CalculateError.invalidInput
}
stack.append(operand1 / operand2)
default:
break
}
}
for char in string {
if char.isNumber {
number.append(char)
} else {
if !number.isEmpty {
stack.append(Double(number) ?? 0)
number = ""
}
switch char {
case "+", "-":
while !operators.isEmpty && operators.last != "(" {
performOperation()
}
operators.append(char)
case "*", "/":
while !operators.isEmpty && (operators.last == "*" || operators.last == "/") {
performOperation()
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last != "(" {
performOperation()
}
operators.popLast()
default:
break
}
}
}
if !number.isEmpty {
stack.append(Double(number) ?? 0)
}
while !operators.isEmpty {
performOperation()
}
guard let result = stack.last else {
throw CalculateError.invalidInput
}
return result
}
```throw CalculateError.invalidInput // error is not handled because the enclosing function is not declared 'throws'let operator = operators.popLast() // keyword 'operator' cannot be used as an identifier hereswitch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationoperators.popLast() // result of call to 'popLast()' is unusedenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) throws {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
break
}
}
var number: Double = 0
var numberHasDigits: Bool = false
for char in string {
if char.isNumber {
number = number * 10 + Double(char.wholeNumberValue!)
numberHasDigits = true
} else {
if numberHasDigits {
stack.append(number)
number = 0
numberHasDigits = false
}
switch char {
case "+", "-", "*", "/":
while !operators.isEmpty && operators.last! != "(" {
try applyOperator(operators.removeLast()!)
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last! != "(" {
try applyOperator(operators.removeLast()!)
}
if let last = operators.popLast(), last != "(" {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if numberHasDigits {
stack.append(number)
}
while !operators.isEmpty {
try applyOperator(operators.removeLast()!)
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) throws {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
break
}
}
var number: Double = 0
var numberHasDigits: Bool = false
for char in string {
if char.isNumber {
number = number * 10 + Double(char.wholeNumberValue!)
numberHasDigits = true
} else {
if numberHasDigits {
stack.append(number)
number = 0
numberHasDigits = false
}
switch char {
case "+", "-", "*", "/":
while !operators.isEmpty && operators.last! != "(" {
try applyOperator(operators.removeLast()!)
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last! != "(" {
try applyOperator(operators.removeLast()!)
}
if let last = operators.popLast(), last != "(" {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if numberHasDigits {
stack.append(number)
}
while !operators.isEmpty {
try applyOperator(operators.removeLast()!)
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
```switch operator { // expected expression in 'switch' statementswitch operator { // expected operator name in operator declarationtry applyOperator(operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'try applyOperator(operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'try applyOperator(operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
var number: String = ""
func processOperator(operator: Character) throws {
if stack.count < 2 {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
if right == 0 {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
throw CalculateError.invalidInput
}
}
for char in string {
if char.isNumber {
number.append(char)
} else {
if !number.isEmpty {
if let num = Double(number) {
stack.append(num)
number = ""
} else {
throw CalculateError.invalidInput
}
}
switch char {
case "+", "-", "*", "/":
while !operators.isEmpty && operators.last! != "(" {
try processOperator(operator: operators.removeLast()!)
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last! != "(" {
try processOperator(operator: operators.removeLast()!)
}
if operators.isEmpty || operators.removeLast() != "(" {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if !number.isEmpty {
if let num = Double(number) {
stack.append(num)
} else {
throw CalculateError.invalidInput
}
}
while !operators.isEmpty {
try processOperator(operator: operators.removeLast()!)
}
if stack.count != 1 {
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 {
var stack: [Double] = []
var operators: [Character] = []
var number: String = ""
func processOperator(operator: Character) throws {
if stack.count < 2 {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
if right == 0 {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
throw CalculateError.invalidInput
}
}
for char in string {
if char.isNumber {
number.append(char)
} else {
if !number.isEmpty {
if let num = Double(number) {
stack.append(num)
number = ""
} else {
throw CalculateError.invalidInput
}
}
switch char {
case "+", "-", "*", "/":
while !operators.isEmpty && operators.last! != "(" {
try processOperator(operator: operators.removeLast()!)
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last! != "(" {
try processOperator(operator: operators.removeLast()!)
}
if operators.isEmpty || operators.removeLast() != "(" {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if !number.isEmpty {
if let num = Double(number) {
stack.append(num)
} else {
throw CalculateError.invalidInput
}
}
while !operators.isEmpty {
try processOperator(operator: operators.removeLast()!)
}
if stack.count != 1 {
throw CalculateError.invalidInput
}
return stack.first!
}
```switch operator { // expected operator name in operator declarationswitch operator { // expected expression in 'switch' statementtry processOperator(operator: operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'try processOperator(operator: operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'try processOperator(operator: operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
stack.append(left / right)
default:
throw CalculateError.invalidInput
}
}
var number: Double = 0
var numberStarted = false
for char in string {
if char.isNumber {
number = number * 10 + Double(char.wholeNumberValue!)
numberStarted = true
} else {
if numberStarted {
stack.append(number)
number = 0
numberStarted = false
}
switch char {
case "+", "-", "*", "/":
while !operators.isEmpty && operators.last! != "(" {
applyOperator(operators.removeLast()!)
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last! != "(" {
applyOperator(operators.removeLast()!)
}
if !operators.isEmpty {
operators.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if numberStarted {
stack.append(number)
}
while !operators.isEmpty {
applyOperator(operators.removeLast()!)
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.last!
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
stack.append(left / right)
default:
throw CalculateError.invalidInput
}
}
var number: Double = 0
var numberStarted = false
for char in string {
if char.isNumber {
number = number * 10 + Double(char.wholeNumberValue!)
numberStarted = true
} else {
if numberStarted {
stack.append(number)
number = 0
numberStarted = false
}
switch char {
case "+", "-", "*", "/":
while !operators.isEmpty && operators.last! != "(" {
applyOperator(operators.removeLast()!)
}
operators.append(char)
case "(":
operators.append(char)
case ")":
while !operators.isEmpty && operators.last! != "(" {
applyOperator(operators.removeLast()!)
}
if !operators.isEmpty {
operators.removeLast()
} else {
throw CalculateError.invalidInput
}
default:
throw CalculateError.invalidInput
}
}
}
if numberStarted {
stack.append(number)
}
while !operators.isEmpty {
applyOperator(operators.removeLast()!)
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.last!
}
```throw CalculateError.invalidInput // error is not handled because the enclosing function is not declared 'throws'switch operator { // expected operator name in operator declarationswitch operator { // expected expression in 'switch' statementapplyOperator(operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'applyOperator(operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'applyOperator(operators.removeLast()!) // cannot force unwrap value of non-optional type 'Character'enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) throws {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
break
}
}
var number: Double = 0
var numberNegative = false
for char in string {
if let digit = Int(String(char)), char.isNumber {
number = number * 10 + Double(digit)
} else {
if char == "." {
numberNegative = true
} else {
if numberNegative {
number = 1 / number
numberNegative = false
}
stack.append(number)
number = 0
}
if let operator = operators.last, ["+", "-", "*", "/"].contains(operator) {
try applyOperator(operator)
operators.removeLast()
}
if char == "(" {
operators.append(char)
} else if char == ")" {
while let lastOperator = operators.last, lastOperator != "(" {
try applyOperator(lastOperator)
operators.removeLast()
}
operators.removeLast()
} else if ["+", "-", "*", "/"].contains(char) {
operators.append(char)
}
}
}
if numberNegative {
number = 1 / number
}
stack.append(number)
while !operators.isEmpty {
try applyOperator(operators.removeLast())
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func applyOperator(_ operator: Character) throws {
guard stack.count >= 2 else {
throw CalculateError.invalidInput
}
let right = stack.removeLast()
let left = stack.removeLast()
switch operator {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
break
}
}
var number: Double = 0
var numberNegative = false
for char in string {
if let digit = Int(String(char)), char.isNumber {
number = number * 10 + Double(digit)
} else {
if char == "." {
numberNegative = true
} else {
if numberNegative {
number = 1 / number
numberNegative = false
}
stack.append(number)
number = 0
}
if let operator = operators.last, ["+", "-", "*", "/"].contains(operator) {
try applyOperator(operator)
operators.removeLast()
}
if char == "(" {
operators.append(char)
} else if char == ")" {
while let lastOperator = operators.last, lastOperator != "(" {
try applyOperator(lastOperator)
operators.removeLast()
}
operators.removeLast()
} else if ["+", "-", "*", "/"].contains(char) {
operators.append(char)
}
}
}
if numberNegative {
number = 1 / number
}
stack.append(number)
while !operators.isEmpty {
try applyOperator(operators.removeLast())
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.removeLast()
}
```switch operator { // expected operator name in operator declarationswitch operator { // expected expression in 'switch' statementif let operator = operators.last, ["+", "-", "*", "/"].contains(operator) { // expected '{' after 'if' conditionif let operator = operators.last, ["+", "-", "*", "/"].contains(operator) { // expected patternif let operator = operators.last, ["+", "-", "*", "/"].contains(operator) { // unwrap condition requires a valid identifiertry applyOperator(operator) // ')' is not allowed in operator namestry applyOperator(operator) // consecutive statements on a line must be separated by ';'try applyOperator(operator) // missing argument for parameter #1 in calltry applyOperator(operator) // expected expression in list of expressionsenum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func performOperation() throws {
guard let right = stack.popLast(), let left = stack.popLast() else {
throw CalculateError.invalidInput
}
switch operators.popLast() {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
break
}
}
for char in string {
switch char {
case "(":
operators.append(char)
case ")":
while let last = operators.last, last != "(" {
try performOperation()
}
operators.removeLast()
case "+", "-":
while let last = operators.last, last != "(" {
try performOperation()
}
operators.append(char)
case "*", "/":
while let last = operators.last, last == "*" || last == "/" {
try performOperation()
}
operators.append(char)
default:
if let number = Double(String(char)) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
}
}
while !operators.isEmpty {
try performOperation()
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.last!
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Calculator which supports operations from readable string format.
Valid tokens is "+-*/()", example input is "2+2*2".
### Response:
```swift
enum CalculateError: Error {
case invalidInput
}
func calculate(_ string: String) throws -> Double {
var stack: [Double] = []
var operators: [Character] = []
func performOperation() throws {
guard let right = stack.popLast(), let left = stack.popLast() else {
throw CalculateError.invalidInput
}
switch operators.popLast() {
case "+":
stack.append(left + right)
case "-":
stack.append(left - right)
case "*":
stack.append(left * right)
case "/":
guard right != 0 else {
throw CalculateError.invalidInput
}
stack.append(left / right)
default:
break
}
}
for char in string {
switch char {
case "(":
operators.append(char)
case ")":
while let last = operators.last, last != "(" {
try performOperation()
}
operators.removeLast()
case "+", "-":
while let last = operators.last, last != "(" {
try performOperation()
}
operators.append(char)
case "*", "/":
while let last = operators.last, last == "*" || last == "/" {
try performOperation()
}
operators.append(char)
default:
if let number = Double(String(char)) {
stack.append(number)
} else {
throw CalculateError.invalidInput
}
}
}
while !operators.isEmpty {
try performOperation()
}
guard stack.count == 1 else {
throw CalculateError.invalidInput
}
return stack.last!
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, 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 task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, 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 task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, encoding: .utf8) ?? ""
task.waitUntilExit()
return (stdout, stderr)
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, encoding: .utf8) ?? ""
task.waitUntilExit()
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, 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 task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8) ?? ""
let stderr = String(data: errdata, encoding: .utf8) ?? ""
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let stdoutString = String(data: outdata, encoding: .utf8) {
stdout = stdoutString
}
if let stderrString = String(data: errdata, encoding: .utf8) {
stderr = stderrString
}
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) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let stdoutString = String(data: outdata, encoding: .utf8) {
stdout = stdoutString
}
if let stderrString = String(data: errdata, encoding: .utf8) {
stderr = stderrString
}
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outData = outpipe.fileHandleForReading.readDataToEndOfFile()
let errData = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let outString = String(data: outData, encoding: .utf8) {
stdout = outString
}
if let errString = String(data: errData, encoding: .utf8) {
stderr = errString
}
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) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outData = outpipe.fileHandleForReading.readDataToEndOfFile()
let errData = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let outString = String(data: outData, encoding: .utf8) {
stdout = outString
}
if let errString = String(data: errData, encoding: .utf8) {
stderr = errString
}
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let stdoutString = String(data: outdata, encoding: .utf8) {
stdout = stdoutString
}
if let stderrString = String(data: errdata, encoding: .utf8) {
stderr = stderrString
}
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) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let stdoutString = String(data: outdata, encoding: .utf8) {
stdout = stdoutString
}
if let stderrString = String(data: errdata, encoding: .utf8) {
stderr = stderrString
}
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let stdoutString = String(data: outdata, encoding: .utf8) {
stdout = stdoutString
}
if let stderrString = String(data: errdata, encoding: .utf8) {
stderr = stderrString
}
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) {
var stdout = ""
var stderr = ""
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
task.waitUntilExit()
if let stdoutString = String(data: outdata, encoding: .utf8) {
stdout = stdoutString
}
if let stderrString = String(data: errdata, encoding: .utf8) {
stderr = stderrString
}
return (stdout, stderr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outData = outpipe.fileHandleForReading.readDataToEndOfFile()
let errData = errpipe.fileHandleForReading.readDataToEndOfFile()
let outStr = String(data: outData, encoding: .utf8) ?? ""
let errStr = String(data: errData, encoding: .utf8) ?? ""
task.waitUntilExit()
return (outStr, errStr)
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outData = outpipe.fileHandleForReading.readDataToEndOfFile()
let errData = errpipe.fileHandleForReading.readDataToEndOfFile()
let outStr = String(data: outData, encoding: .utf8) ?? ""
let errStr = String(data: errData, encoding: .utf8) ?? ""
task.waitUntilExit()
return (outStr, errStr)
}
```func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8)!
let stderr = String(data: errdata, encoding: .utf8)!
task.waitUntilExit()
return (stdout, stderr)
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to execute binary with arguments.
Returns tuple where first element is stdout and second is stderr.
### Response:
```swift
func execute(binary: String, arguments: [String]) -> (String, String) {
let task = Process()
task.launchPath = binary
task.arguments = arguments
let outpipe = Pipe()
let errpipe = Pipe()
task.standardOutput = outpipe
task.standardError = errpipe
task.launch()
let outdata = outpipe.fileHandleForReading.readDataToEndOfFile()
let errdata = errpipe.fileHandleForReading.readDataToEndOfFile()
let stdout = String(data: outdata, encoding: .utf8)!
let stderr = String(data: errdata, encoding: .utf8)!
task.waitUntilExit()
return (stdout, stderr)
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache = [T: U]()
return { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedValue = cache[input] {
return cachedValue
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func memoize<T: Hashable, U>(_ function: @escaping (T) -> U) -> (T) -> U {
var cache: [T: U] = [:]
return { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = 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 { input in
if let cachedResult = cache[input] {
return cachedResult
} else {
let result = function(input)
cache[input] = result
return result
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
repeat {
do {
return try task()
} catch {
attempt += 1
if attempt >= attempts {
throw error
}
}
} while true
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Retry mechanism that retries a task a specified number of times before failing.
### Response:
```swift
func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
repeat {
do {
return try task()
} catch {
attempt += 1
if attempt >= attempts {
throw error
}
}
} while true
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
repeat {
do {
return try task()
} catch {
attempt += 1
if attempt < attempts {
continue
} else {
throw error
}
}
} while attempt < attempts
}### 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
repeat {
do {
return try task()
} catch {
attempt += 1
if attempt < attempts {
continue
} else {
throw error
}
}
} while attempt < attempts
}
```} // missing return in global function expected to return 'T'func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
attempt += 1
if attempt >= attempts {
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 attempt = 0
while true {
do {
return try task()
} catch {
attempt += 1
if attempt >= attempts {
throw error
}
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```func retry<T>(attempts: Int, task: @escaping () throws -> T) throws -> T {
var attempt = 0
while true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}### 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 true {
do {
return try task()
} catch {
if attempt >= attempts {
throw error
}
attempt += 1
}
}
}
```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
}
}
``` // 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
}
}
``` // 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
}
}
``` // 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
}
}
``` // 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
}
}
``` // 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
}
}
``` // 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
}
}
``` // 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 typeName = String(describing: type)
factories[typeName] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let typeName = String(describing: type)
if let factory = factories[typeName] 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 typeName = String(describing: type)
factories[typeName] = factory
}
func resolve<T>(_ type: T.Type) -> T? {
let typeName = String(describing: type)
if let factory = factories[typeName] 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
}
}
``` // XCTAssertEqual failed: (nil) is not equal to (Optional("Hello, World!"))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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
var state: State
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
var state: State
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(state, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
var state: State
private var transitions: [(State, Event): State] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
var state: State
private var transitions: [(State, Event): State] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(state, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(currentState, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(currentState, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
var state: State
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
var state: State
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(state, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
var state: State
private var transitions: [(State, Event): State] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
} else {
fatalError("Invalid transition from \(state) with \(event)")
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
var state: State
private var transitions: [(State, Event): State] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
} else {
fatalError("Invalid transition from \(state) with \(event)")
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(state, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
var state: State
private var transitions: [(State, Event): State] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
var state: State
private var transitions: [(State, Event): State] = [:]
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(state, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(currentState, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
private var currentState: State
init(state: State) {
self.currentState = state
}
var state: State {
return currentState
}
func trigger(event: Event) {
if let nextState = transitions[(currentState, event)] {
currentState = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(currentState, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
var state: State
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, 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 {
typealias State = State
typealias Event = Event
private var transitions: [(State, Event): State] = [:]
var state: State
init(state: State) {
self.state = state
}
func trigger(event: Event) {
if let nextState = transitions[(state, event)] {
state = nextState
}
}
func registerTransition(from: State, to: State, event: Event) {
transitions[(from, event)] = to
}
}
```private var transitions: [(State, Event): State] = [:] // type '(State, Event)' does not conform to protocol 'Hashable'init(state: State) { // initializer requirement 'init(state:)' can only be satisfied by a 'required' initializer in non-final class 'StateMachine<State, Event>'if let nextState = transitions[(state, event)] { // type '(State, Event)' cannot conform to 'Hashable'transitions[(from, event)] = to // type '(State, Event)' cannot conform to 'Hashable'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Abstract file system manager and metadata calculation.
Used to calculate total size of all files in file system, files count and file system tree depth.
### Response:
```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0) { $0 + $1.totalSize } // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0) { $0 + $1.filesCount } // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.reduce(0) { max($0, $1.treeDepth) } // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Abstract file system manager and metadata calculation.
Used to calculate total size of all files in file system, files count and file system tree depth.
### Response:
```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.totalSize }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.filesCount }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.reduce(0, { max($0, $1.treeDepth) }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Abstract file system manager and metadata calculation.
Used to calculate total size of all files in file system, files count and file system tree depth.
### Response:
```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.totalSize }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.filesCount }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.reduce(0, { max($0, $1.treeDepth) }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'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 + 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 0
case .directory(let contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.totalSize }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.filesCount }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.treeDepth }.max() ?? 0 + 1 // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Abstract file system manager and metadata calculation.
Used to calculate total size of all files in file system, files count and file system tree depth.
### Response:
```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.totalSize }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.filesCount }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.reduce(0, { max($0, $1.treeDepth) }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'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 1 + 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 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.totalSize }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.filesCount }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Abstract file system manager and metadata calculation.
Used to calculate total size of all files in file system, files count and file system tree depth.
### Response:
```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0) { $0 + $1.totalSize }
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0) { $0 + $1.filesCount }
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0) { max($0, $1.treeDepth) }
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0) { $0 + $1.totalSize } // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0) { $0 + $1.filesCount } // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.reduce(0) { max($0, $1.treeDepth) } // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'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 + 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 0
case .directory(let contents):
return contents.map { $0.treeDepth }.max() ?? 0 + 1
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.totalSize }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.filesCount }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.treeDepth }.max() ?? 0 + 1 // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'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 1 + 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 1 + contents.map { $0.treeDepth }.max() ?? 0
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.totalSize }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.map { $0.filesCount }.reduce(0, +) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.map { $0.treeDepth }.max() ?? 0 // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'map'indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Abstract file system manager and metadata calculation.
Used to calculate total size of all files in file system, files count and file system tree depth.
### Response:
```swift
indirect enum FileSystemNode {
case file(name: String, size: Int)
case directory(name: String, contents: [FileSystemNode])
}
protocol FileSystemInfo {
var totalSize: Int { get }
var filesCount: Int { get }
var treeDepth: Int { get }
}
extension FileSystemNode: FileSystemInfo {
var totalSize: Int {
switch self {
case .file(let size):
return size
case .directory(let contents):
return contents.reduce(0, { $0 + $1.totalSize })
}
}
var filesCount: Int {
switch self {
case .file:
return 1
case .directory(let contents):
return contents.reduce(0, { $0 + $1.filesCount })
}
}
var treeDepth: Int {
switch self {
case .file:
return 0
case .directory(let contents):
return 1 + contents.reduce(0, { max($0, $1.treeDepth) })
}
}
}
```case .file(let size): // enum case 'file' has 2 associated values; matching them as a tuple is deprecatedreturn size // cannot convert return expression of type '(name: String, size: Int)' to return type 'Int'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.totalSize }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn contents.reduce(0, { $0 + $1.filesCount }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'case .directory(let contents): // enum case 'directory' has 2 associated values; matching them as a tuple is deprecatedreturn 1 + contents.reduce(0, { max($0, $1.treeDepth) }) // value of tuple type '(name: String, contents: [FileSystemNode])' has no member 'reduce'protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() { }
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() { }
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { } // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {
}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [Element] = []
init() {
super.init()
}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [Element] = []
init() {
super.init()
}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```init() { // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'super.init() // 'super' members cannot be referenced in a root classvar stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [T] = []
init() {}
func push(_ element: T) {
elements.append(element)
}
func pop() -> T? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic stack with push and pop functions.
### Response:
```swift
protocol StackProtocol {
associatedtype Element
init()
func push(_ element: Element)
func pop() -> Element?
}
class Stack<T>: StackProtocol {
typealias Element = T
private var elements: [Element] = []
init() {}
func push(_ element: Element) {
elements.append(element)
}
func pop() -> Element? {
return elements.popLast()
}
}
```init() {} // initializer requirement 'init()' can only be satisfied by a 'required' initializer in non-final class 'Stack<T>'var stack = Stack<Int>() // variable 'stack' was never mutated; consider changing to 'let' constantprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'private mutating func updateAccessQueue(key: Key) { // 'mutating' is not valid on instance methods in classesprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.keys.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache.removeValue(forKey: leastRecentlyUsedKey)
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
updateAccessQueue(key: key)
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.keys.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache.removeValue(forKey: leastRecentlyUsedKey)
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
updateAccessQueue(key: key)
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'private mutating func updateAccessQueue(key: Key) { // 'mutating' is not valid on instance methods in classesprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'private mutating func updateAccessQueue(key: Key) { // 'mutating' is not valid on instance methods in classesprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
if let leastRecentlyUsedKey = accessQueue.first {
cache[leastRecentlyUsedKey] = nil
accessQueue.removeFirst()
}
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
if let leastRecentlyUsedKey = accessQueue.first {
cache[leastRecentlyUsedKey] = nil
accessQueue.removeFirst()
}
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
if let leastRecentlyUsedKey = accessQueue.first {
cache.removeValue(forKey: leastRecentlyUsedKey)
accessQueue.removeFirst()
}
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
if let leastRecentlyUsedKey = accessQueue.first {
cache.removeValue(forKey: leastRecentlyUsedKey)
accessQueue.removeFirst()
}
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache.removeValue(forKey: leastRecentlyUsedKey)
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic in-memory cache that follows to the LRU (Least Recently Used) eviction policy.
The cache should have a specified capacity limit, and when this limit is reached, it should remove the least recently used item to make space for new entries.
### Response:
```swift
protocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
updateAccessQueue(key: key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
updateAccessQueue(key: key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache.removeValue(forKey: leastRecentlyUsedKey)
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
}
}
}
private mutating func updateAccessQueue(key: Key) {
if let index = accessQueue.firstIndex(of: key) {
accessQueue.remove(at: index)
accessQueue.append(key)
}
}
}
```init(capacity: Int) { // initializer requirement 'init(capacity:)' can only be satisfied by a 'required' initializer in non-final class 'Cache<Key, Element>'private mutating func updateAccessQueue(key: Key) { // 'mutating' is not valid on instance methods in classesprotocol CacheProtocol {
associatedtype Key: Hashable
associatedtype Element
init(capacity: Int)
subscript(key: Key) -> Element? { get set }
}
class Cache<Key: Hashable, Element>: CacheProtocol {
private var cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.count >= capacity {
let leastRecentlyUsedKey = accessQueue.removeFirst()
cache[leastRecentlyUsedKey] = nil
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.keys.count >= capacity {
if let leastRecentlyUsedKey = accessQueue.first {
cache[leastRecentlyUsedKey] = nil
accessQueue.removeFirst()
}
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 cache: [Key: Element] = [:]
private var accessQueue: [Key] = []
private let capacity: Int
init(capacity: Int) {
self.capacity = capacity
}
subscript(key: Key) -> Element? {
get {
if let value = cache[key] {
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
return value
}
return nil
}
set {
if let value = newValue {
if cache.keys.contains(key) {
cache[key] = value
accessQueue.removeAll(where: { $0 == key })
accessQueue.append(key)
} else {
if cache.keys.count >= capacity {
if let leastRecentlyUsedKey = accessQueue.first {
cache[leastRecentlyUsedKey] = nil
accessQueue.removeFirst()
}
}
cache[key] = value
accessQueue.append(key)
}
} else {
cache[key] = nil
accessQueue.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 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(timeIntervalSinceNow: expiration))
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key], expiration > Date() {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache[key] = nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.
### Response:
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date(timeIntervalSinceNow: expiration))
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key], expiration > Date() {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache[key] = nil
}
}
```get(key: key) // expected '{' to start getter definitionmutating func remove(key: Key) { // 'mutating' is not valid on instance methods in classesThread.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(timeIntervalSinceNow: expiration))
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key], expiration > Date() {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, 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)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
cache[key] = (value, Date(timeIntervalSinceNow: expiration))
}
func get(key: Key) -> Value? {
if let (value, expiration) = cache[key], expiration > Date() {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, key: key, expiration: expiration)
}
}
```get(key: key) // expected '{' to start getter definitionsubscript(key: Key, value: Value, expiration: TimeInterval) { // expected '->' for subscript element typesubscript(key: Key, value: Value, expiration: TimeInterval) { // expected subscripting element typeThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], Date() < expirationDate {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, 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)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], Date() < expirationDate {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, key: key, expiration: expiration)
}
}
```get(key: key) // expected '{' to start getter definitionsubscript(key: Key, value: Value, expiration: TimeInterval) { // expected '->' for subscript element typesubscript(key: Key, value: Value, expiration: TimeInterval) { // expected subscripting element typeThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], Date() < expirationDate {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, 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)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], Date() < expirationDate {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, key: key, expiration: expiration)
}
}
```get(key: key) // expected '{' to start getter definitionsubscript(key: Key, value: Value, expiration: TimeInterval) { // expected '->' for subscript element typesubscript(key: Key, value: Value, expiration: TimeInterval) { // expected subscripting element typeThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache.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, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache.removeValue(forKey: key)
}
}
```get(key: key) // expected '{' to start getter definitionmutating func remove(key: Key) { // 'mutating' is not valid on instance methods in classesThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, 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)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, key: key, expiration: expiration)
}
}
```get(key: key) // expected '{' to start getter definitionsubscript(key: Key, value: Value, expiration: TimeInterval) { // expected '->' for subscript element typesubscript(key: Key, value: Value, expiration: TimeInterval) { // expected subscripting element typeThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache.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, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache.removeValue(forKey: key)
}
}
```get(key: key) // expected '{' to start getter definitionmutating func remove(key: Key) { // 'mutating' is not valid on instance methods in classesThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], expirationDate > Date() {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache[key] = nil
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Caching mechanism with expiration eviction policy.
Subscript methods used for convenient access.
### Response:
```swift
protocol ExpirableCacheProtocol {
associatedtype Key: Hashable
associatedtype Value
func put(value: Value, key: Key, expiration: TimeInterval)
func get(key: Key) -> Value?
}
class ExpirableCache<Key: Hashable, Value>: ExpirableCacheProtocol {
private var cache: [Key: (Value, Date)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key], expirationDate > Date() {
return value
} else {
cache[key] = nil
return nil
}
}
subscript(key: Key) -> Value? {
get(key: key)
}
mutating func remove(key: Key) {
cache[key] = nil
}
}
```get(key: key) // expected '{' to start getter definitionmutating func remove(key: Key) { // 'mutating' is not valid on instance methods in classesThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, 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)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, key: key, expiration: expiration)
}
}
```get(key: key) // expected '{' to start getter definitionsubscript(key: Key, value: Value, expiration: TimeInterval) { // expected '->' for subscript element typesubscript(key: Key, value: Value, expiration: TimeInterval) { // expected subscripting element typeThread.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) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, 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)] = [:]
func put(value: Value, key: Key, expiration: TimeInterval) {
let expirationDate = Date(timeIntervalSinceNow: expiration)
cache[key] = (value, expirationDate)
}
func get(key: Key) -> Value? {
if let (value, expirationDate) = cache[key] {
if expirationDate > Date() {
return value
} else {
cache.removeValue(forKey: key)
}
}
return nil
}
subscript(key: Key) -> Value? {
get(key: key)
}
subscript(key: Key, value: Value, expiration: TimeInterval) {
put(value: value, key: key, expiration: expiration)
}
}
```get(key: key) // expected '{' to start getter definitionsubscript(key: Key, value: Value, expiration: TimeInterval) { // expected '->' for subscript element typesubscript(key: Key, value: Value, expiration: TimeInterval) { // expected subscripting element typeThread.sleep(forTimeInterval: 1.1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6Thread.sleep(forTimeInterval: 0.9) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data()
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(decryptedByte))
}
return decryptedString
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data()
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(decryptedByte))
}
return decryptedString
}
}
```decryptedString.append(Character(decryptedByte)) // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let stringData = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
encryptedData[index] = byte ^ keyByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
decryptedData[index] = byte ^ keyByte
}
return String(data: decryptedData, encoding: .utf8)!
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let stringData = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(count: stringData.count)
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
encryptedData[index] = byte ^ keyByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
decryptedData[index] = byte ^ keyByte
}
return String(data: decryptedData, encoding: .utf8)!
}
}
```protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data()
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(decryptedByte))
}
return decryptedString
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data()
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedString = ""
for i in 0..<data.count {
let byte = data[data.index(data.startIndex, offsetBy: i)]
let keyByte = keyData[keyData.index(keyData.startIndex, offsetBy: i % keyData.count)]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(decryptedByte))
}
return decryptedString
}
}
```decryptedString.append(Character(decryptedByte)) // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
let stringData = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
let keyData = key.data(using: .utf8)!
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(decryptedByte))
}
return decryptedString
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
let stringData = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
for (index, byte) in stringData.enumerated() {
let keyByte = keyData[index % keyData.count]
let encryptedByte = byte ^ keyByte
encryptedData.append(encryptedByte)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
let keyData = key.data(using: .utf8)!
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
let decryptedByte = byte ^ keyByte
decryptedString.append(Character(decryptedByte))
}
return decryptedString
}
}
```decryptedString.append(Character(decryptedByte)) // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
for (index, char) in string.enumerated() {
let keyChar = key[index % key.count]
let encryptedChar = UInt8(char.asciiValue!) ^ UInt8(keyChar.asciiValue!)
encryptedData.append(encryptedChar)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyChar = key[index % key.count]
let decryptedChar = UInt8(byte) ^ UInt8(keyChar.asciiValue!)
decryptedString.append(Character(decryptedChar))
}
return decryptedString
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
for (index, char) in string.enumerated() {
let keyChar = key[index % key.count]
let encryptedChar = UInt8(char.asciiValue!) ^ UInt8(keyChar.asciiValue!)
encryptedData.append(encryptedChar)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyChar = key[index % key.count]
let decryptedChar = UInt8(byte) ^ UInt8(keyChar.asciiValue!)
decryptedString.append(Character(decryptedChar))
}
return decryptedString
}
}
```let keyChar = key[index % key.count] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let keyChar = key[index % key.count] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.decryptedString.append(Character(decryptedChar)) // no exact matches in call to initializerprotocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let encryptedByte = byte ^ keyData[keyIndex]
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let decryptedByte = byte ^ keyData[keyIndex]
decryptedData[index] = decryptedByte
}
return String(data: decryptedData, encoding: .utf8)!
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let encryptedByte = byte ^ keyData[keyIndex]
encryptedData[index] = encryptedByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let decryptedByte = byte ^ keyData[keyIndex]
decryptedData[index] = decryptedByte
}
return String(data: decryptedData, encoding: .utf8)!
}
}
```protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(repeating: 0, count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let keyByte = keyData[keyIndex]
encryptedData[index] = byte ^ keyByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(repeating: 0, count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let keyByte = keyData[keyIndex]
decryptedData[index] = byte ^ keyByte
}
if let decryptedString = String(data: decryptedData, encoding: .utf8) {
return decryptedString
} else {
return ""
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(repeating: 0, count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let keyByte = keyData[keyIndex]
encryptedData[index] = byte ^ keyByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(repeating: 0, count: data.count)
for (index, byte) in data.enumerated() {
let keyIndex = index % keyData.count
let keyByte = keyData[keyIndex]
decryptedData[index] = byte ^ keyByte
}
if let decryptedString = String(data: decryptedData, encoding: .utf8) {
return decryptedString
} else {
return ""
}
}
}
```protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
encryptedData[index] = byte ^ keyByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
decryptedData[index] = byte ^ keyByte
}
return String(data: decryptedData, encoding: .utf8)!
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
let data = string.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var encryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
encryptedData[index] = byte ^ keyByte
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
let keyData = key.data(using: .utf8)!
var decryptedData = Data(count: data.count)
for (index, byte) in data.enumerated() {
let keyByte = keyData[index % keyData.count]
decryptedData[index] = byte ^ keyByte
}
return String(data: decryptedData, encoding: .utf8)!
}
}
```protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
for (index, char) in string.enumerated() {
let keyChar = key[index % key.count]
let encryptedChar = Character(Unicode.Scalar(char.unicodeScalars.first?.value ?? 0) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
encryptedData.append(encryptedChar.utf8)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyChar = key[index % key.count]
let decryptedChar = Character(Unicode.Scalar(byte) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
decryptedString.append(decryptedChar)
}
return decryptedString
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
for (index, char) in string.enumerated() {
let keyChar = key[index % key.count]
let encryptedChar = Character(Unicode.Scalar(char.unicodeScalars.first?.value ?? 0) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
encryptedData.append(encryptedChar.utf8)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyChar = key[index % key.count]
let decryptedChar = Character(Unicode.Scalar(byte) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
decryptedString.append(decryptedChar)
}
return decryptedString
}
}
```let keyChar = key[index % key.count] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let encryptedChar = Character(Unicode.Scalar(char.unicodeScalars.first?.value ?? 0) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0)) // binary operator '^' cannot be applied to two 'Unicode.Scalar?' operandslet keyChar = key[index % key.count] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let decryptedChar = Character(Unicode.Scalar(byte) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0)) // referencing operator function '^' on 'SIMD' requires that 'Unicode.Scalar' conform to 'SIMD'protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
for (index, char) in string.enumerated() {
let keyChar = key[index % key.count]
let encryptedChar = Character(Unicode.Scalar(char.unicodeScalars.first?.value ?? 0) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
encryptedData.append(encryptedChar.utf8)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyChar = key[index % key.count]
let decryptedChar = Character(Unicode.Scalar(byte) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
decryptedString.append(decryptedChar)
}
return decryptedString
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Simple XOR encryptor and decryptor that converts plain text into encrypted text by applying the binary 'Exclusive OR' operator implemented according to the protocol.
### Response:
```swift
protocol EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data
func decrypt(_ data: Data, _ key: String) -> String
}
class Encryptor: EncryptorProtocol {
func encrypt(_ string: String, _ key: String) -> Data {
var encryptedData = Data()
for (index, char) in string.enumerated() {
let keyChar = key[index % key.count]
let encryptedChar = Character(Unicode.Scalar(char.unicodeScalars.first?.value ?? 0) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
encryptedData.append(encryptedChar.utf8)
}
return encryptedData
}
func decrypt(_ data: Data, _ key: String) -> String {
var decryptedString = ""
for (index, byte) in data.enumerated() {
let keyChar = key[index % key.count]
let decryptedChar = Character(Unicode.Scalar(byte) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0))
decryptedString.append(decryptedChar)
}
return decryptedString
}
}
```let keyChar = key[index % key.count] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let encryptedChar = Character(Unicode.Scalar(char.unicodeScalars.first?.value ?? 0) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0)) // binary operator '^' cannot be applied to two 'Unicode.Scalar?' operandslet keyChar = key[index % key.count] // 'subscript(_:)' is unavailable: cannot subscript String with an Int, use a String.Index instead.let decryptedChar = Character(Unicode.Scalar(byte) ^ Unicode.Scalar(keyChar.unicodeScalars.first?.value ?? 0)) // referencing operator function '^' on 'SIMD' requires that 'Unicode.Scalar' conform to 'SIMD'protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
while let first = requests.first, first < now - 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 var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
while let first = requests.first, first < now - timeInterval {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expiredTime = now - timeInterval
requests = requests.filter { $0 > expiredTime }
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 var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expiredTime = now - timeInterval
requests = requests.filter { $0 > expiredTime }
if requests.count < maxRequests {
requests.append(now)
return true
}
return false
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expiredTime = now - timeInterval
requests = requests.filter { $0 >= expiredTime }
if requests.count < maxRequests {
requests.append(now)
return true
} else {
return false
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Rate limiter that controls the rate of actions.
Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expiredTime = now - timeInterval
requests = requests.filter { $0 >= expiredTime }
if requests.count < maxRequests {
requests.append(now)
return true
} else {
return false
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
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, oldestRequest < now - 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 var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
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, oldestRequest < now - timeInterval {
requests.removeFirst()
}
return requests.count <= maxRequests
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
// Remove requests that are older than the time interval
requests = requests.filter { $0 > now - timeInterval }
// If the number of requests is within the limit, allow the request
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 var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
// Remove requests that are older than the time interval
requests = requests.filter { $0 > now - timeInterval }
// If the number of requests is within the limit, allow the request
return requests.count <= maxRequests
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let expiredDate = now - timeInterval
requests = requests.filter { $0 >= expiredDate }
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 var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let expiredDate = now - timeInterval
requests = requests.filter { $0 >= expiredDate }
return requests.count <= maxRequests
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var requestTimes: [Date] = []
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expirationTime = now - timeInterval
requestTimes.removeAll { $0 < expirationTime }
if requestTimes.count < maxRequests {
requestTimes.append(now)
return true
} else {
return false
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Rate limiter that controls the rate of actions.
Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var maxRequests: Int
private var timeInterval: TimeInterval
private var requestTimes: [Date] = []
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expirationTime = now - timeInterval
requestTimes.removeAll { $0 < expirationTime }
if requestTimes.count < maxRequests {
requestTimes.append(now)
return true
} else {
return false
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let expirationTime = now - timeInterval
requests = requests.filter { $0 > expirationTime }
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 var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
requests.append(now)
let expirationTime = now - timeInterval
requests = requests.filter { $0 > expirationTime }
return requests.count <= maxRequests
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expiredTime = now - timeInterval
requests = requests.filter { $0 > expiredTime }
if requests.count < maxRequests {
requests.append(now)
return true
} else {
return false
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Rate limiter that controls the rate of actions.
Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private var requests: [Date] = []
private let maxRequests: Int
private let timeInterval: TimeInterval
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let now = Date()
let expiredTime = now - timeInterval
requests = requests.filter { $0 > expiredTime }
if requests.count < maxRequests {
requests.append(now)
return true
} else {
return false
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requestCount = 0
private var lastRequestTime: TimeInterval = 0
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = CFAbsoluteTimeGetCurrent()
if currentTime - lastRequestTime > timeInterval {
requestCount = 1
lastRequestTime = currentTime
return true
} else if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Rate limiter that controls the rate of actions.
Consists with a maximum number of requests and a time interval, and includes a method to determine if a new request can be made within the defined limits.
### Response:
```swift
protocol RateLimiterProtocol {
init(maxRequests: Int, timeInterval: TimeInterval)
func allowRequest() -> Bool
}
class RateLimiter: RateLimiterProtocol {
private let maxRequests: Int
private let timeInterval: TimeInterval
private var requestCount = 0
private var lastRequestTime: TimeInterval = 0
init(maxRequests: Int, timeInterval: TimeInterval) {
self.maxRequests = maxRequests
self.timeInterval = timeInterval
}
func allowRequest() -> Bool {
let currentTime = CFAbsoluteTimeGetCurrent()
if currentTime - lastRequestTime > timeInterval {
requestCount = 1
lastRequestTime = currentTime
return true
} else if requestCount < maxRequests {
requestCount += 1
return true
} else {
return false
}
}
}
```init(maxRequests: Int, timeInterval: TimeInterval) { // initializer requirement 'init(maxRequests:timeInterval:)' can only be satisfied by a 'required' initializer in non-final class 'RateLimiter'Thread.sleep(forTimeInterval: 1) // class method 'sleep' is unavailable from asynchronous contexts; Use Task.sleep(until:clock:) instead.; this is an error in Swift 6protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Basic number counter with possibility to increment counter and access current value.
Thread-safe for read and write operations.
### Response:
```swift
protocol ThreadSafeCounterProtocol {
init(value: Int)
func increment()
func currentValue() -> Int
}
class ThreadSafeCounter: ThreadSafeCounterProtocol {
private var value: Int
private let lock = NSLock()
init(value: Int) {
self.value = value
}
func increment() {
lock.lock()
value += 1
lock.unlock()
}
func currentValue() -> Int {
lock.lock()
let currentValue = value
lock.unlock()
return currentValue
}
}
```init(value: Int) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ThreadSafeCounter'protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<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
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Functional pipeline builder class conforming to a protocol, allowing chaining transformations with type changes.
Ensure the final output is produced by sequentially applying transformations starting from an initial value.
### Response:
```swift
protocol PipelineProtocol {
associatedtype Output
init(value: Output)
func pipe<U>(_ transform: @escaping (Output) -> U) -> Pipeline<U>
func execute() -> Output
}
class Pipeline<T>: PipelineProtocol {
typealias Output = T
var value: T
init(value: T) {
self.value = value
}
func pipe<U>(_ transform: @escaping (T) -> U) -> Pipeline<U> {
return Pipeline(value: transform(self.value))
}
func execute() -> T {
return self.value
}
}
```init(value: T) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'Pipeline<T>'return Pipeline(value: transform(self.value)) // cannot convert value of type 'U' to expected argument type 'T'return Pipeline(value: transform(self.value)) // cannot convert return expression of type 'Pipeline<T>' to return type 'Pipeline<U>'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
typealias Value = Value
var value: Value {
didSet {
observers.forEach { (id, observer) in
observer(self.value)
}
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
typealias Value = Value
var value: Value {
didSet {
observers.forEach { (id, observer) in
observer(self.value)
}
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
}
```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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}### 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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}
```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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}### 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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}
```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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}### 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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}
```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 {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
var value: Value {
didSet {
observers.values.forEach { $0(self.value) }
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
typealias Value = Value
private var observers: [UUID: (Value) -> Void] = [:]
private var value: Value
init(value: Value) {
self.value = value
}
var value: Value {
didSet {
observers.values.forEach { $0(self.value) }
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
}
```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'observers.values.forEach { $0(self.value) } // ambiguous use of 'value'observable.value = 10 // 'value' is inaccessible due to 'private' protection levelobservable.value = 20 // 'value' is inaccessible due to 'private' protection levelobservable.value = 30 // 'value' is inaccessible due to 'private' protection levelprotocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}### 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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}
```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
}
var value: Value {
get {
return self.value
}
set {
self.value = newValue
for (_, observer) in self.observers {
observer(newValue)
}
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
self.observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
self.observers.removeValue(forKey: observer)
}
}### 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
}
var value: Value {
get {
return self.value
}
set {
self.value = newValue
for (_, observer) in self.observers {
observer(newValue)
}
}
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
self.observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
self.observers.removeValue(forKey: observer)
}
}
```private var value: Value // property 'value' must be declared internal because it matches a requirement in internal protocol 'ObservablePropertyProtocol'init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'var value: Value { // invalid redeclaration of 'value'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
typealias Value = Value
var value: Value {
didSet {
notifyObservers()
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
typealias Value = Value
var value: Value {
didSet {
notifyObservers()
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let uuid = UUID()
observers[uuid] = observer
return uuid
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
private func notifyObservers() {
for (_, observer) in observers {
observer(value)
}
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
private var observers: [UUID: (Value) -> Void] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}### 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] = [:]
var value: Value {
didSet {
for (_, observer) in observers {
observer(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)
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
var value: Value {
didSet {
observers.forEach { (id, observer) in
observer(value)
}
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Generic observable property that notifies observers of value changes.
### Response:
```swift
protocol ObservablePropertyProtocol {
associatedtype Value
init(value: Value)
var value: Value { get set }
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID
func unsubscribe(_ observer: UUID)
}
class ObservableProperty<Value>: ObservablePropertyProtocol {
var value: Value {
didSet {
observers.forEach { (id, observer) in
observer(value)
}
}
}
private var observers: [UUID: (Value) -> Void] = [:]
init(value: Value) {
self.value = value
}
func subscribe(_ observer: @escaping (Value) -> Void) -> UUID {
let id = UUID()
observers[id] = observer
return id
}
func unsubscribe(_ observer: UUID) {
observers.removeValue(forKey: observer)
}
}
```init(value: Value) { // initializer requirement 'init(value:)' can only be satisfied by a 'required' initializer in non-final class 'ObservableProperty<Value>'protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
var projectedValue: T {
didSet {
wrappedValue = min(max(projectedValue, 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<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
var projectedValue: T {
didSet {
wrappedValue = min(max(projectedValue, range.lowerBound), range.upperBound)
}
}
}
```} // return from initializer without initializing all stored propertiesprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
var projectedValue: T {
didSet {
wrappedValue = min(max(projectedValue, 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<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
var projectedValue: T {
didSet {
wrappedValue = min(max(projectedValue, range.lowerBound), range.upperBound)
}
}
}
```} // return from initializer without initializing all stored propertiesprotocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<Value: Comparable>: ClampedProtocol {
var wrappedValue: Value
var range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
mutating func didSet(newValue: Value) {
wrappedValue = min(max(newValue, 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 {
var wrappedValue: Value
var range: ClosedRange<Value>
init(wrappedValue: Value, _ range: ClosedRange<Value>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
mutating func didSet(newValue: Value) {
wrappedValue = min(max(newValue, range.lowerBound), range.upperBound)
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
var projectedValue: T {
get { wrappedValue }
set { wrappedValue = min(max(newValue, 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<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
var projectedValue: T {
get { wrappedValue }
set { wrappedValue = min(max(newValue, range.lowerBound), range.upperBound) }
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.range = range
self.wrappedValue = 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<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.range = range
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T
let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
self.range = range
}
}
``` // XCTAssertEqual failed: (15) is not equal to (10)protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T {
didSet {
if wrappedValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if wrappedValue > range.upperBound {
wrappedValue = range.upperBound
}
}
}
private let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
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<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T {
didSet {
if wrappedValue < range.lowerBound {
wrappedValue = range.lowerBound
} else if wrappedValue > range.upperBound {
wrappedValue = range.upperBound
}
}
}
private let range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.range = range
self.wrappedValue = wrappedValue
}
}
```protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T {
didSet {
wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}
var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = wrappedValue
self.range = range
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that clamps value within a specified range.
### Response:
```swift
protocol ClampedProtocol {
associatedtype Value: Comparable
init(wrappedValue: Value, _ range: ClosedRange<Value>)
}
@propertyWrapper
struct Clamped<T: Comparable>: ClampedProtocol {
typealias Value = T
var wrappedValue: T {
didSet {
wrappedValue = min(max(wrappedValue, range.lowerBound), range.upperBound)
}
}
var range: ClosedRange<T>
init(wrappedValue: T, _ range: ClosedRange<T>) {
self.wrappedValue = wrappedValue
self.range = range
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}
```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(Event.get, value)
return value
}
set {
logger(Event.set, newValue)
value = newValue
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: 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(Event.get, value)
return value
}
set {
logger(Event.set, newValue)
value = newValue
}
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value
let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<Value> {
get {
logger(.get, wrappedValue)
return self
}
set {
logger(.set, newValue.wrappedValue)
wrappedValue = newValue.wrappedValue
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value
let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
}
var projectedValue: Logged<Value> {
get {
logger(.get, wrappedValue)
return self
}
set {
logger(.set, newValue.wrappedValue)
wrappedValue = newValue.wrappedValue
}
}
}
``` // XCTAssertEqual failed: ([]) is not equal to (["Accessing value: 0"])enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, oldValue)
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, oldValue)
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}
``` // XCTAssertEqual failed: (["Accessing value: 0", "Setting value: 0", "Setting value: 10"]) is not equal to (["Accessing value: 0", "Setting value: 10"])enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}
```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(Event.get, value)
return value
}
set {
logger(Event.set, newValue)
value = newValue
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: 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(Event.get, value)
return value
}
set {
logger(Event.set, newValue)
value = newValue
}
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
private let logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}
// Usage
var loggedInt = Logged(wrappedValue: 0, logger: { event, value in
print("Event: \(event), Value: \(value)")
})
loggedInt.wrappedValue = 10
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value: Any>: 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
}
}
}### 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: Any>: 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
}
}
}
```enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: LoggedProtocol {
var wrappedValue: Value {
didSet {
logger(.set, wrappedValue)
}
}
var logger: (Event, Value) -> Void
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void) {
self.wrappedValue = wrappedValue
self.logger = logger
logger(.get, wrappedValue)
}
}
// Usage
var loggedInt = Logged(wrappedValue: 0) { (event, value) in
switch event {
case .get:
print("Getting value: \(value)")
case .set:
print("Setting value: \(value)")
}
}
loggedInt.wrappedValue = 5
```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(Event.get, value)
return value
}
set {
logger(Event.set, newValue)
value = newValue
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Property wrapper that logs access and modification of the wrapped property.
### Response:
```swift
enum Event {
case get, set
}
protocol LoggedProtocol {
associatedtype Value
init(wrappedValue: Value, logger: @escaping (Event, Value) -> Void)
}
@propertyWrapper
struct Logged<Value>: 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(Event.get, value)
return value
}
set {
logger(Event.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 var provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else { return nil }
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private var provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else { return nil }
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private var provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if let index = searchBarText.index(searchBarText.startIndex, offsetBy: -1) {
searchBarText.removeSubrange(index..<searchBarText.endIndex)
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private var provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if let index = searchBarText.index(searchBarText.startIndex, offsetBy: -1) {
searchBarText.removeSubrange(index..<searchBarText.endIndex)
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'if let index = searchBarText.index(searchBarText.startIndex, offsetBy: -1) { // initializer for conditional binding must have Optional type, not 'String.Index'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private var provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else {
return nil
}
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private var provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else {
return nil
}
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
var searchBarText: String = ""
var weatherProvider: WeatherProvider
init(provider: WeatherProvider) {
self.weatherProvider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else {
return nil
}
do {
let forecast = try weatherProvider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
var searchBarText: String = ""
var weatherProvider: WeatherProvider
init(provider: WeatherProvider) {
self.weatherProvider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else {
return nil
}
do {
let forecast = try weatherProvider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return ApplicationFeedback.success(city: searchBarText, forecast: forecast)
} catch {
return ApplicationFeedback.failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return ApplicationFeedback.success(city: searchBarText, forecast: forecast)
} catch {
return ApplicationFeedback.failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else { return nil }
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if !searchBarText.isEmpty {
searchBarText.removeLast()
}
return nil
case .searchButtonPress:
guard !searchBarText.isEmpty else { return nil }
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var currentCity: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
currentCity.append(character)
return nil
case .keyboardDeleteBackwards:
if !currentCity.isEmpty {
currentCity.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: currentCity)
return .success(city: currentCity, forecast: forecast)
} catch {
return .failure(city: currentCity)
}
}
}
}### 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 currentCity: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
currentCity.append(character)
return nil
case .keyboardDeleteBackwards:
if !currentCity.isEmpty {
currentCity.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: currentCity)
return .success(city: currentCity, forecast: forecast)
} catch {
return .failure(city: currentCity)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var currentCity: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
currentCity.append(character)
return nil
case .keyboardDeleteBackwards:
if !currentCity.isEmpty {
currentCity.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: currentCity)
return .success(city: currentCity, forecast: forecast)
} catch {
return .failure(city: currentCity)
}
}
}
}### 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 currentCity: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
currentCity.append(character)
return nil
case .keyboardDeleteBackwards:
if !currentCity.isEmpty {
currentCity.removeLast()
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: currentCity)
return .success(city: currentCity, forecast: forecast)
} catch {
return .failure(city: currentCity)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if let index = searchBarText.index(searchBarText.startIndex, offsetBy: -1) {
searchBarText.removeSubrange(index..<searchBarText.endIndex)
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Weather application provider.
Handle user actions to fill search bar results and use WeatherProvider to check forecast.
### Response:
```swift
protocol WeatherProvider {
func forecast(for city: String) throws -> String
}
enum UserAction {
case keyboardCharacterSelect(Character)
case keyboardDeleteBackwards
case searchButtonPress
}
enum ApplicationFeedback: Equatable {
case success(city: String, forecast: String)
case failure(city: String)
}
protocol WeatherApplicationDependencies {
init(provider: WeatherProvider)
}
protocol WeatherApplicationInteractions {
func handle(action: UserAction) -> ApplicationFeedback?
}
typealias WeatherApplicationProtocol = WeatherApplicationDependencies & WeatherApplicationInteractions
class WeatherApplication: WeatherApplicationProtocol {
private let provider: WeatherProvider
private var searchBarText: String = ""
init(provider: WeatherProvider) {
self.provider = provider
}
func handle(action: UserAction) -> ApplicationFeedback? {
switch action {
case .keyboardCharacterSelect(let character):
searchBarText.append(character)
return nil
case .keyboardDeleteBackwards:
if let index = searchBarText.index(searchBarText.startIndex, offsetBy: -1) {
searchBarText.removeSubrange(index..<searchBarText.endIndex)
}
return nil
case .searchButtonPress:
do {
let forecast = try provider.forecast(for: searchBarText)
return .success(city: searchBarText, forecast: forecast)
} catch {
return .failure(city: searchBarText)
}
}
}
}
```init(provider: WeatherProvider) { // initializer requirement 'init(provider:)' can only be satisfied by a 'required' initializer in non-final class 'WeatherApplication'if let index = searchBarText.index(searchBarText.startIndex, offsetBy: -1) { // initializer for conditional binding must have Optional type, not 'String.Index'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 {
return self.balance
}
func deposit(amount: Double) async {
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return self.balance
}
func deposit(amount: Double) async {
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return self.balance
}
func deposit(amount: Double) async {
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return self.balance
}
func deposit(amount: Double) async {
self.balance += amount
}
func withdraw(amount: Double) async -> Bool {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}### 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 {
return balance
}
func deposit(amount: Double) async {
balance += amount
}
func withdraw(amount: Double) async -> Bool {
if balance >= amount {
balance -= amount
return true
} else {
return false
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return self.balance
}
func deposit(amount: Double) async {
await MainActor.run {
self.balance += amount
}
}
func withdraw(amount: Double) async -> Bool {
return await MainActor.run {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Thread-safe bank account class using an actor that allows asynchronous deposits and withdrawals, ensuring that the account balance remains consistent and transactions are atomic.
### Response:
```swift
protocol BankAccountProtocol {
init(balance: Double)
var balance: Double { get async }
func deposit(amount: Double) async
func withdraw(amount: Double) async -> Bool
}
actor BankAccount: BankAccountProtocol {
private var balance: Double
init(balance: Double) {
self.balance = balance
}
var balance: Double {
return self.balance
}
func deposit(amount: Double) async {
await MainActor.run {
self.balance += amount
}
}
func withdraw(amount: Double) async -> Bool {
return await MainActor.run {
if self.balance >= amount {
self.balance -= amount
return true
} else {
return false
}
}
}
}
```private var balance: Double // property 'balance' must be declared internal because it matches a requirement in internal protocol 'BankAccountProtocol'var balance: Double { // invalid redeclaration of 'balance'self.balance += amount // actor-isolated property 'balance' can not be mutated from the main actorif self.balance >= amount { // actor-isolated property 'balance' can not be referenced from the main actorself.balance -= amount // actor-isolated property 'balance' can not be mutated from the main actorprotocol 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 let value = self.value, !condition() {
return value
} else {
let newValue = computeValue()
self.value = newValue
return newValue
}
}
set {
self.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 let value = self.value, !condition() {
return value
} else {
let newValue = computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
}
```self.value = newValue // 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.value = wrappedValue()
self.condition = condition
self.computeValue = wrappedValue
}
var wrappedValue: Value {
get {
if 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 condition: () -> Bool
private let computeValue: () -> Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.value = wrappedValue()
self.condition = condition
self.computeValue = wrappedValue
}
var wrappedValue: Value {
get {
if 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 let compute: () -> Value
private let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if cachedValue == nil || !condition() {
cachedValue = compute()
}
return cachedValue!
}
set {
cachedValue = 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 let compute: () -> Value
private let condition: () -> Bool
private var cachedValue: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if cachedValue == nil || !condition() {
cachedValue = compute()
}
return cachedValue!
}
set {
cachedValue = newValue
}
}
}
```cachedValue = 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 let value = self.value, condition() {
return value
} else {
let newValue = computeValue()
self.value = newValue
return newValue
}
}
set {
self.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 let value = self.value, condition() {
return value
} else {
let newValue = computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
}
```self.value = newValue // 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 let value = self.value, self.condition() {
return value
} else {
let newValue = self.computeValue()
self.value = newValue
return newValue
}
}
set {
self.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 let value = self.value, self.condition() {
return value
} else {
let newValue = self.computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
}
```self.value = newValue // 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 shouldRecalculate: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.computeValue = wrappedValue
self.shouldRecalculate = condition
}
var wrappedValue: Value {
get {
if value == nil || shouldRecalculate() {
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 shouldRecalculate: () -> Bool
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.computeValue = wrappedValue
self.shouldRecalculate = condition
}
var wrappedValue: Value {
get {
if value == nil || shouldRecalculate() {
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 let compute: () -> Value
private let condition: () -> Bool
private var cache: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if cache == nil || !condition() {
cache = compute()
}
return cache!
}
set {
cache = 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 let compute: () -> Value
private let condition: () -> Bool
private var cache: Value?
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool) {
self.compute = wrappedValue
self.condition = condition
}
var wrappedValue: Value {
get {
if cache == nil || !condition() {
cache = compute()
}
return cache!
}
set {
cache = newValue
}
}
}
```cache = compute() // cannot assign to property: 'self' is immutableprotocol CachedProperty {
associatedtype Value
init(wrappedValue: @autoclosure @escaping () -> Value, condition: @escaping () -> Bool)
}
@propertyWrapper
struct Cached<Value>: CachedProperty {
private var 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 let value = self.value, self.condition() {
return value
} else {
let newValue = self.computeValue()
self.value = newValue
return newValue
}
}
set {
self.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 let value = self.value, self.condition() {
return value
} else {
let newValue = self.computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
}
```self.value = newValue // 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 let value = self.value, !condition() {
return value
} else {
let newValue = computeValue()
self.value = newValue
return newValue
}
}
set {
self.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 let value = self.value, !condition() {
return value
} else {
let newValue = computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
}
```self.value = newValue // 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 let value = self.value {
return value
} else {
let newValue = self.computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
mutating func invalidate() {
self.value = nil
}
}### 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 let value = self.value {
return value
} else {
let newValue = self.computeValue()
self.value = newValue
return newValue
}
}
set {
self.value = newValue
}
}
mutating func invalidate() {
self.value = nil
}
}
```self.value = newValue // cannot assign to property: 'self' is immutableinfix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(lhs: @escaping (T) -> U, rhs: @escaping (U) -> V) -> (T) -> V {
return { input in
rhs(lhs(input))
}
}### 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: MultiplicationPrecedence
}
func >>> <T, U, V>(lhs: @escaping (T) -> U, rhs: @escaping (U) -> V) -> (T) -> V {
return { input in
rhs(lhs(input))
}
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { a in g(f(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: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { a in g(f(a)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C {
return { x in g(f(x)) }
}
```infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Custom infix operator >>> that composes two functions. The operator should take two functions and return a new function that represents the composition of the two functions (i.e., the output of the first function becomes the input of the second function).
### Response:
```swift
infix operator >>>: FunctionCompositionPrecedence
precedencegroup FunctionCompositionPrecedence {
associativity: left
higherThan: MultiplicationPrecedence
}
func >>> <T, U, V>(f: @escaping (T) -> U, g: @escaping (U) -> V) -> (T) -> V {
return { x in g(f(x)) }
}
```import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
var context = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 {
context.update(bytes: buffer, count: bytesRead)
}
return context.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? {
var context = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 {
context.update(bytes: buffer, count: bytesRead)
}
return context.finalize()
}
```while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 { // binary operator '>' cannot be applied to operands of type '()' and 'Int'context.update(bytes: buffer, count: bytesRead) // missing argument for parameter 'bufferPointer' in callcontext.update(bytes: buffer, count: bytesRead) // extra arguments at positions #1, #2 in callimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == 0 {
break
}
hash.update(bytes: buffer[0..<bytesRead])
}
return hash.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 {
var hash = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == 0 {
break
}
hash.update(bytes: buffer[0..<bytesRead])
}
return hash.finalize()
}
```hash.update(bytes: buffer[0..<bytesRead]) // incorrect argument label in call (have 'bytes:', expected 'data:')import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 {
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 {
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile (bytesRead = inputStream.read(&buffer, maxLength: bufferSize)) > 0 { // binary operator '>' cannot be applied to operands of type '()' and 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == 0 {
break
}
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == 0 {
break
}
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == 0 {
break
}
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while true {
bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
if bytesRead == 0 {
break
}
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializersimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer)) > 0 {
hash.update(bytes: buffer[0..<bytesRead])
}
return hash.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 {
var hash = SHA256()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer)) > 0 {
hash.update(bytes: buffer[0..<bytesRead])
}
return hash.finalize()
}
```while (bytesRead = inputStream.read(&buffer)) > 0 { // missing argument for parameter 'maxLength' in callwhile (bytesRead = inputStream.read(&buffer)) > 0 { // binary operator '>' cannot be applied to operands of type '()' and 'Int'hash.update(bytes: buffer[0..<bytesRead]) // incorrect argument label in call (have 'bytes:', expected 'data:')import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer)) > 0 {
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
var bytesRead: Int
while (bytesRead = inputStream.read(&buffer)) > 0 {
hash.update(bytes: buffer[0..<bytesRead])
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile (bytesRead = inputStream.read(&buffer)) > 0 { // missing argument for parameter 'maxLength' in callwhile (bytesRead = inputStream.read(&buffer)) > 0 { // binary operator '>' cannot be applied to operands of type '()' and 'Int'import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer) {
hash.update(bytesRead)
}
return hash
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest? {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer) {
hash.update(bytesRead)
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer) { // missing argument for parameter 'maxLength' in callimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer) {
hash.update(bytesRead)
}
return hash
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function that computes the SHA-256 hash of data read from a stream with a specified buffer size using Apple's CryptoKit framework.
### Response:
```swift
import CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var hash = SHA256Digest()
var buffer = [UInt8](repeating: 0, count: bufferSize)
while let bytesRead = inputStream.read(&buffer) {
hash.update(bytesRead)
}
return hash
}
```var hash = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer) { // missing argument for parameter 'maxLength' in callimport CryptoKit
func computeSHA256Hash(of inputStream: InputStream, bufferSize: Int) -> SHA256Digest {
var buffer = [UInt8](repeating: 0, count: bufferSize)
var digest = SHA256Digest()
var context = SHA256()
while let bytesRead = inputStream.read(&buffer) {
context.update(bytesRead)
}
digest = context.finalize()
return digest
}### 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 {
var buffer = [UInt8](repeating: 0, count: bufferSize)
var digest = SHA256Digest()
var context = SHA256()
while let bytesRead = inputStream.read(&buffer) {
context.update(bytesRead)
}
digest = context.finalize()
return digest
}
```var digest = SHA256Digest() // 'SHA256Digest' cannot be constructed because it has no accessible initializerswhile let bytesRead = inputStream.read(&buffer) { // missing argument for parameter 'maxLength' in callcontext.update(bytesRead) // missing argument label 'bufferPointer:' 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 bytes = [Int8](tuple16)
bytes.removeLast() // Remove the null terminator
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) {
var bytes = [Int8](tuple16)
bytes.removeLast() // Remove the null terminator
self = String(bytes: bytes, encoding: .utf8) ?? ""
}
}
```var bytes = [Int8](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 array = [Int8]()
for i in 0..<16 {
let value = tuple16.0
if value == 0 {
break
}
array.append(value)
tuple16 = tuple16.1
}
self = String(bytes: array, 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 array = [Int8]()
for i in 0..<16 {
let value = tuple16.0
if value == 0 {
break
}
array.append(value)
tuple16 = tuple16.1
}
self = String(bytes: array, encoding: .utf8) ?? ""
}
}
```tuple16 = tuple16.1 // cannot assign to value: 'tuple16' is a 'let' constanttuple16 = tuple16.1 // cannot assign value of type 'Int8' to type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)')self = String(bytes: array, encoding: .utf8) ?? "" // type of expression is ambiguous without a type annotationtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes = [Int8](repeating: 0, count: 16)
bytes[0] = tuple16.0
bytes[1] = tuple16.1
bytes[2] = tuple16.2
bytes[3] = tuple16.3
bytes[4] = tuple16.4
bytes[5] = tuple16.5
bytes[6] = tuple16.6
bytes[7] = tuple16.7
bytes[8] = tuple16.8
bytes[9] = tuple16.9
bytes[10] = tuple16.10
bytes[11] = tuple16.11
bytes[12] = tuple16.12
bytes[13] = tuple16.13
bytes[14] = tuple16.14
bytes[15] = tuple16.15
let data = Data(bytes: bytes)
self = String(data: data, encoding: .utf8)!
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes = [Int8](repeating: 0, count: 16)
bytes[0] = tuple16.0
bytes[1] = tuple16.1
bytes[2] = tuple16.2
bytes[3] = tuple16.3
bytes[4] = tuple16.4
bytes[5] = tuple16.5
bytes[6] = tuple16.6
bytes[7] = tuple16.7
bytes[8] = tuple16.8
bytes[9] = tuple16.9
bytes[10] = tuple16.10
bytes[11] = tuple16.11
bytes[12] = tuple16.12
bytes[13] = tuple16.13
bytes[14] = tuple16.14
bytes[15] = tuple16.15
let data = Data(bytes: bytes)
self = String(data: data, encoding: .utf8)!
}
}
```let data = Data(bytes: bytes) // 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 bytes = [Int8](tuple16)
bytes.removeLast() // remove the null terminator
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) {
var bytes = [Int8](tuple16)
bytes.removeLast() // remove the null terminator
self = String(bytes: bytes, encoding: .utf8) ?? ""
}
}
```var bytes = [Int8](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 bytes = [Int8](tuple16)
bytes.removeLast()
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) {
var bytes = [Int8](tuple16)
bytes.removeLast()
self = String(bytes: bytes, encoding: .utf8) ?? ""
}
}
```var bytes = [Int8](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 bytes = [Int8](tuple16)
bytes.removeLast() // remove the null terminator
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) {
var bytes = [Int8](tuple16)
bytes.removeLast() // remove the null terminator
self = String(bytes: bytes, encoding: .utf8) ?? ""
}
}
```var bytes = [Int8](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 bytes = [Int8](repeating: 0, count: 16)
bytes[0] = tuple16.0
bytes[1] = tuple16.1
bytes[2] = tuple16.2
bytes[3] = tuple16.3
bytes[4] = tuple16.4
bytes[5] = tuple16.5
bytes[6] = tuple16.6
bytes[7] = tuple16.7
bytes[8] = tuple16.8
bytes[9] = tuple16.9
bytes[10] = tuple16.10
bytes[11] = tuple16.11
bytes[12] = tuple16.12
bytes[13] = tuple16.13
bytes[14] = tuple16.14
bytes[15] = tuple16.15
let data = Data(bytes: bytes)
let string = String(data: data, encoding: .utf8)
self = string ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes = [Int8](repeating: 0, count: 16)
bytes[0] = tuple16.0
bytes[1] = tuple16.1
bytes[2] = tuple16.2
bytes[3] = tuple16.3
bytes[4] = tuple16.4
bytes[5] = tuple16.5
bytes[6] = tuple16.6
bytes[7] = tuple16.7
bytes[8] = tuple16.8
bytes[9] = tuple16.9
bytes[10] = tuple16.10
bytes[11] = tuple16.11
bytes[12] = tuple16.12
bytes[13] = tuple16.13
bytes[14] = tuple16.14
bytes[15] = tuple16.15
let data = Data(bytes: bytes)
let string = String(data: data, encoding: .utf8)
self = string ?? ""
}
}
```let data = Data(bytes: bytes) // 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 bytes = [Int8](repeating: 0, count: 16)
bytes[0] = tuple16.0
bytes[1] = tuple16.1
bytes[2] = tuple16.2
bytes[3] = tuple16.3
bytes[4] = tuple16.4
bytes[5] = tuple16.5
bytes[6] = tuple16.6
bytes[7] = tuple16.7
bytes[8] = tuple16.8
bytes[9] = tuple16.9
bytes[10] = tuple16.10
bytes[11] = tuple16.11
bytes[12] = tuple16.12
bytes[13] = tuple16.13
bytes[14] = tuple16.14
bytes[15] = tuple16.15
let data = Data(bytes: bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Extension to the String type that allows initializing a String from a tuple of 16 Int8 values, where the tuple represents a C-style null-terminated string.
### Response:
```swift
typealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes = [Int8](repeating: 0, count: 16)
bytes[0] = tuple16.0
bytes[1] = tuple16.1
bytes[2] = tuple16.2
bytes[3] = tuple16.3
bytes[4] = tuple16.4
bytes[5] = tuple16.5
bytes[6] = tuple16.6
bytes[7] = tuple16.7
bytes[8] = tuple16.8
bytes[9] = tuple16.9
bytes[10] = tuple16.10
bytes[11] = tuple16.11
bytes[12] = tuple16.12
bytes[13] = tuple16.13
bytes[14] = tuple16.14
bytes[15] = tuple16.15
let data = Data(bytes: bytes)
self = String(data: data, encoding: .utf8) ?? ""
}
}
```let data = Data(bytes: bytes) // 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 array = [Int8]()
for i in 0..<16 {
let value = tuple16.0
if value == 0 {
break
}
array.append(value)
tuple16 = tuple16.1
}
self = String(bytes: array, 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 array = [Int8]()
for i in 0..<16 {
let value = tuple16.0
if value == 0 {
break
}
array.append(value)
tuple16 = tuple16.1
}
self = String(bytes: array, encoding: .utf8) ?? ""
}
}
```tuple16 = tuple16.1 // cannot assign to value: 'tuple16' is a 'let' constanttuple16 = tuple16.1 // cannot assign value of type 'Int8' to type 'Tuple16' (aka '(Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)')self = String(bytes: array, encoding: .utf8) ?? "" // type of expression is ambiguous without a type annotationtypealias Tuple16 = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
extension String {
init(tuple16: Tuple16) {
var bytes: [Int8] = []
for i in 0..<16 {
let byte = tuple16.0
if byte == 0 {
break
}
bytes.append(byte)
}
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) {
var bytes: [Int8] = []
for i in 0..<16 {
let byte = tuple16.0
if byte == 0 {
break
}
bytes.append(byte)
}
self = String(bytes: bytes, encoding: .utf8)!
}
}
```self = String(bytes: bytes, encoding: .utf8)! // type of expression is ambiguous without a type annotationimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsImageBuffer = CMSampleBufferCreateImageBuffer(kCFAllocatorDefault, lhs) else { return false }
guard let rhsImageBuffer = CMSampleBufferCreateImageBuffer(kCFAllocatorDefault, rhs) else { return false }
let lhsImage = CIImage(cvImageBuffer: lhsImageBuffer)
let rhsImage = CIImage(cvImageBuffer: rhsImageBuffer)
guard let lhsContext = CIContext(options: nil) else { return false }
guard let rhsContext = CIContext(options: nil) else { return false }
let lhsData = lhsContext.createCGImage(lhsImage, from: lhsImage.extent)
let rhsData = rhsContext.createCGImage(rhsImage, from: rhsImage.extent)
guard let lhsCGImage = lhsData else { return false }
guard let rhsCGImage = rhsData else { return false }
let lhsSize = lhsCGImage.size
let rhsSize = rhsCGImage.size
if lhsSize != rhsSize {
return false
}
let lhsPixelData = lhsCGImage.dataProvider?.data
let rhsPixelData = rhsCGImage.dataProvider?.data
guard let lhsPixelBytes = lhsPixelData, let rhsPixelBytes = rhsPixelData else { return false }
return lhsPixelBytes.isEqual(rhsPixelBytes)
}### 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 let lhsImageBuffer = CMSampleBufferCreateImageBuffer(kCFAllocatorDefault, lhs) else { return false }
guard let rhsImageBuffer = CMSampleBufferCreateImageBuffer(kCFAllocatorDefault, rhs) else { return false }
let lhsImage = CIImage(cvImageBuffer: lhsImageBuffer)
let rhsImage = CIImage(cvImageBuffer: rhsImageBuffer)
guard let lhsContext = CIContext(options: nil) else { return false }
guard let rhsContext = CIContext(options: nil) else { return false }
let lhsData = lhsContext.createCGImage(lhsImage, from: lhsImage.extent)
let rhsData = rhsContext.createCGImage(rhsImage, from: rhsImage.extent)
guard let lhsCGImage = lhsData else { return false }
guard let rhsCGImage = rhsData else { return false }
let lhsSize = lhsCGImage.size
let rhsSize = rhsCGImage.size
if lhsSize != rhsSize {
return false
}
let lhsPixelData = lhsCGImage.dataProvider?.data
let rhsPixelData = rhsCGImage.dataProvider?.data
guard let lhsPixelBytes = lhsPixelData, let rhsPixelBytes = rhsPixelData else { return false }
return lhsPixelBytes.isEqual(rhsPixelBytes)
}
```guard let lhsImageBuffer = CMSampleBufferCreateImageBuffer(kCFAllocatorDefault, lhs) else { return false } // cannot find 'CMSampleBufferCreateImageBuffer' in scopeguard let rhsImageBuffer = CMSampleBufferCreateImageBuffer(kCFAllocatorDefault, rhs) else { return false } // cannot find 'CMSampleBufferCreateImageBuffer' in scopelet lhsImage = CIImage(cvImageBuffer: lhsImageBuffer) // cannot find 'CIImage' in scopelet rhsImage = CIImage(cvImageBuffer: rhsImageBuffer) // cannot find 'CIImage' in scopeguard let lhsContext = CIContext(options: nil) else { return false } // cannot find 'CIContext' in scopeguard let lhsContext = CIContext(options: nil) else { return false } // 'nil' requires a contextual typeguard let rhsContext = CIContext(options: nil) else { return false } // cannot find 'CIContext' in scopeguard let rhsContext = CIContext(options: nil) else { return false } // 'nil' requires a contextual typelet lhsPixelData = lhsCGImage.dataProvider?.data // type of expression is ambiguous without a type annotationlet rhsPixelData = rhsCGImage.dataProvider?.data // type of expression is ambiguous without a type annotationimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsImageBuffer = CIImage(cvPixelBuffer: lhs) else { return false }
guard let rhsImageBuffer = CIImage(cvPixelBuffer: rhs) else { return false }
guard let lhsContext = CIContext(options: nil) else { return false }
guard let rhsContext = CIContext(options: nil) else { return false }
guard let lhsImage = lhsContext.createCGImage(lhsImageBuffer, from: lhsImageBuffer.extent) else { return false }
guard let rhsImage = rhsContext.createCGImage(rhsImageBuffer, from: rhsImageBuffer.extent) else { return false }
guard let lhsData = lhsImage.dataProvider?.data else { return false }
guard let rhsData = rhsImage.dataProvider?.data else { return false }
return lhsData == rhsData
}### 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 let lhsImageBuffer = CIImage(cvPixelBuffer: lhs) else { return false }
guard let rhsImageBuffer = CIImage(cvPixelBuffer: rhs) else { return false }
guard let lhsContext = CIContext(options: nil) else { return false }
guard let rhsContext = CIContext(options: nil) else { return false }
guard let lhsImage = lhsContext.createCGImage(lhsImageBuffer, from: lhsImageBuffer.extent) else { return false }
guard let rhsImage = rhsContext.createCGImage(rhsImageBuffer, from: rhsImageBuffer.extent) else { return false }
guard let lhsData = lhsImage.dataProvider?.data else { return false }
guard let rhsData = rhsImage.dataProvider?.data else { return false }
return lhsData == rhsData
}
```guard let lhsImageBuffer = CIImage(cvPixelBuffer: lhs) else { return false } // cannot find 'CIImage' in scopeguard let rhsImageBuffer = CIImage(cvPixelBuffer: rhs) else { return false } // cannot find 'CIImage' in scopeguard let lhsContext = CIContext(options: nil) else { return false } // cannot find 'CIContext' in scopeguard let lhsContext = CIContext(options: nil) else { return false } // 'nil' requires a contextual typeguard let rhsContext = CIContext(options: nil) else { return false } // cannot find 'CIContext' in scopeguard let rhsContext = CIContext(options: nil) else { return false } // 'nil' requires a contextual typeimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs)
let rhsFormat = CVPixelBufferGetPixelFormatType(rhs)
if lhsFormat != rhsFormat {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 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 let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs)
let rhsFormat = CVPixelBufferGetPixelFormatType(rhs)
if lhsFormat != rhsFormat {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 0
}
``` // XCTAssertTrue failedimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
if CVPixelBufferGetPixelFormatType(lhs) != CVPixelBufferGetPixelFormatType(rhs) {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 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 let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
if CVPixelBufferGetPixelFormatType(lhs) != CVPixelBufferGetPixelFormatType(rhs) {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 0
}
``` // XCTAssertTrue failedimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsImageBuffer = CIImage(cvPixelBuffer: lhs),
let rhsImageBuffer = CIImage(cvPixelBuffer: rhs) else {
return false
}
guard let lhsContext = CIContext(options: nil),
let rhsContext = CIContext(options: nil) else {
return false
}
guard let lhsImage = lhsContext.createCGImage(lhsImageBuffer, from: lhsImageBuffer.extent),
let rhsImage = rhsContext.createCGImage(rhsImageBuffer, from: rhsImageBuffer.extent) else {
return false
}
return lhsImage.isEqual(rhsImage)
}### 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 let lhsImageBuffer = CIImage(cvPixelBuffer: lhs),
let rhsImageBuffer = CIImage(cvPixelBuffer: rhs) else {
return false
}
guard let lhsContext = CIContext(options: nil),
let rhsContext = CIContext(options: nil) else {
return false
}
guard let lhsImage = lhsContext.createCGImage(lhsImageBuffer, from: lhsImageBuffer.extent),
let rhsImage = rhsContext.createCGImage(rhsImageBuffer, from: rhsImageBuffer.extent) else {
return false
}
return lhsImage.isEqual(rhsImage)
}
```guard let lhsImageBuffer = CIImage(cvPixelBuffer: lhs), // cannot find 'CIImage' in scopelet rhsImageBuffer = CIImage(cvPixelBuffer: rhs) else { // cannot find 'CIImage' in scopeguard let lhsContext = CIContext(options: nil), // cannot find 'CIContext' in scopeguard let lhsContext = CIContext(options: nil), // 'nil' requires a contextual typelet rhsContext = CIContext(options: nil) else { // cannot find 'CIContext' in scopelet rhsContext = CIContext(options: nil) else { // 'nil' requires a contextual typeimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs)
let rhsFormat = CVPixelBufferGetPixelFormatType(rhs)
if lhsFormat != rhsFormat {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 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 let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs)
let rhsFormat = CVPixelBufferGetPixelFormatType(rhs)
if lhsFormat != rhsFormat {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 0
}
``` // XCTAssertTrue failedimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsWidth = CVPixelBufferGetWidth(lhs)
let lhsHeight = CVPixelBufferGetHeight(lhs)
let rhsWidth = CVPixelBufferGetWidth(rhs)
let rhsHeight = CVPixelBufferGetHeight(rhs)
if lhsWidth != rhsWidth || lhsHeight != rhsHeight {
return false
}
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs)
let rhsFormat = CVPixelBufferGetPixelFormatType(rhs)
if lhsFormat != rhsFormat {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
if lhsBytesPerRow != rhsBytesPerRow {
return false
}
let lhsSize = lhsWidth * lhsHeight * 4 // Assuming 4 bytes per pixel
let rhsSize = rhsWidth * rhsHeight * 4 // Assuming 4 bytes per pixel
if lhsSize != rhsSize {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 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 let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsWidth = CVPixelBufferGetWidth(lhs)
let lhsHeight = CVPixelBufferGetHeight(lhs)
let rhsWidth = CVPixelBufferGetWidth(rhs)
let rhsHeight = CVPixelBufferGetHeight(rhs)
if lhsWidth != rhsWidth || lhsHeight != rhsHeight {
return false
}
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs)
let rhsFormat = CVPixelBufferGetPixelFormatType(rhs)
if lhsFormat != rhsFormat {
return false
}
let lhsBytesPerRow = CVPixelBufferGetBytesPerRow(lhs)
let rhsBytesPerRow = CVPixelBufferGetBytesPerRow(rhs)
if lhsBytesPerRow != rhsBytesPerRow {
return false
}
let lhsSize = lhsWidth * lhsHeight * 4 // Assuming 4 bytes per pixel
let rhsSize = rhsWidth * rhsHeight * 4 // Assuming 4 bytes per pixel
if lhsSize != rhsSize {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 0
}
``` // XCTAssertTrue failedimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
if CVPixelBufferGetPixelFormatType(lhs) != CVPixelBufferGetPixelFormatType(rhs) {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 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 let lhsData = CVPixelBufferGetBaseAddress(lhs),
let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetWidth(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetWidth(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
if CVPixelBufferGetPixelFormatType(lhs) != CVPixelBufferGetPixelFormatType(rhs) {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 0
}
``` // XCTAssertTrue failedimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetBytesPerRow(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetBytesPerRow(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
if CVPixelBufferGetPixelFormatType(lhs) != CVPixelBufferGetPixelFormatType(rhs) {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 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 let lhsData = CVPixelBufferGetBaseAddress(lhs), let rhsData = CVPixelBufferGetBaseAddress(rhs) else {
return false
}
let lhsSize = CVPixelBufferGetBytesPerRow(lhs) * CVPixelBufferGetHeight(lhs)
let rhsSize = CVPixelBufferGetBytesPerRow(rhs) * CVPixelBufferGetHeight(rhs)
if lhsSize != rhsSize {
return false
}
if CVPixelBufferGetPixelFormatType(lhs) != CVPixelBufferGetPixelFormatType(rhs) {
return false
}
return memcmp(lhsData, rhsData, lhsSize) == 0
}
``` // XCTAssertTrue failedimport CoreVideo
func ==(lhs: CVPixelBuffer, rhs: CVPixelBuffer) -> Bool {
guard let lhsImageBuffer = CMSampleBufferGetImageBuffer(lhs) else { return false }
guard let rhsImageBuffer = CMSampleBufferGetImageBuffer(rhs) else { return false }
let lhsSize = CVPixelBufferGetPixelBufferWidth(lhs) == CVPixelBufferGetPixelBufferWidth(rhs) &&
CVPixelBufferGetPixelBufferHeight(lhs) == CVPixelBufferGetPixelBufferHeight(rhs)
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs)
var lhsData: UnsafeMutablePointer<UInt8>?
var rhsData: UnsafeMutablePointer<UInt8>?
CVPixelBufferLockBaseAddress(lhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
CVPixelBufferLockBaseAddress(rhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
CVPixelBufferGetBaseAddress(lhsImageBuffer, &lhsData)
CVPixelBufferGetBaseAddress(rhsImageBuffer, &rhsData)
let lhsContent = lhsData?.assumingMemoryBound(to: UInt8.self)
let rhsContent = rhsData?.assumingMemoryBound(to: UInt8.self)
let contentEqual = lhsContent?.baseAddress == rhsContent?.baseAddress
CVPixelBufferUnlockBaseAddress(lhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
CVPixelBufferUnlockBaseAddress(rhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
return lhsSize && lhsFormat && contentEqual
}### 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 let lhsImageBuffer = CMSampleBufferGetImageBuffer(lhs) else { return false }
guard let rhsImageBuffer = CMSampleBufferGetImageBuffer(rhs) else { return false }
let lhsSize = CVPixelBufferGetPixelBufferWidth(lhs) == CVPixelBufferGetPixelBufferWidth(rhs) &&
CVPixelBufferGetPixelBufferHeight(lhs) == CVPixelBufferGetPixelBufferHeight(rhs)
let lhsFormat = CVPixelBufferGetPixelFormatType(lhs) == CVPixelBufferGetPixelFormatType(rhs)
var lhsData: UnsafeMutablePointer<UInt8>?
var rhsData: UnsafeMutablePointer<UInt8>?
CVPixelBufferLockBaseAddress(lhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
CVPixelBufferLockBaseAddress(rhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
CVPixelBufferGetBaseAddress(lhsImageBuffer, &lhsData)
CVPixelBufferGetBaseAddress(rhsImageBuffer, &rhsData)
let lhsContent = lhsData?.assumingMemoryBound(to: UInt8.self)
let rhsContent = rhsData?.assumingMemoryBound(to: UInt8.self)
let contentEqual = lhsContent?.baseAddress == rhsContent?.baseAddress
CVPixelBufferUnlockBaseAddress(lhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
CVPixelBufferUnlockBaseAddress(rhsImageBuffer, CVPixelBufferLockFlags(rawValue: 0))
return lhsSize && lhsFormat && contentEqual
}
```guard let lhsImageBuffer = CMSampleBufferGetImageBuffer(lhs) else { return false } // cannot find 'CMSampleBufferGetImageBuffer' in scopeguard let rhsImageBuffer = CMSampleBufferGetImageBuffer(rhs) else { return false } // cannot find 'CMSampleBufferGetImageBuffer' in scopelet lhsSize = CVPixelBufferGetPixelBufferWidth(lhs) == CVPixelBufferGetPixelBufferWidth(rhs) && // cannot find 'CVPixelBufferGetPixelBufferWidth' in scopelet lhsSize = CVPixelBufferGetPixelBufferWidth(lhs) == CVPixelBufferGetPixelBufferWidth(rhs) && // cannot find 'CVPixelBufferGetPixelBufferWidth' in scopeCVPixelBufferGetPixelBufferHeight(lhs) == CVPixelBufferGetPixelBufferHeight(rhs) // cannot find 'CVPixelBufferGetPixelBufferHeight' in scopeCVPixelBufferGetPixelBufferHeight(lhs) == CVPixelBufferGetPixelBufferHeight(rhs) // cannot find 'CVPixelBufferGetPixelBufferHeight' in scopeCVPixelBufferGetBaseAddress(lhsImageBuffer, &lhsData) // extra argument in callCVPixelBufferGetBaseAddress(rhsImageBuffer, &rhsData) // extra argument in calllet lhsContent = lhsData?.assumingMemoryBound(to: UInt8.self) // value of type 'UnsafeMutablePointer<UInt8>' has no member 'assumingMemoryBound'let rhsContent = rhsData?.assumingMemoryBound(to: UInt8.self) // value of type 'UnsafeMutablePointer<UInt8>' has no member 'assumingMemoryBound'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}
```Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count)) // cannot convert value of type 'UnsafeRawPointer' to expected argument type 'UnsafePointer<PublicItem>'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}
```Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count)) // cannot convert value of type 'UnsafeRawPointer' to expected argument type 'UnsafePointer<PublicItem>'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) -> [PublicItem] in
return Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) -> [PublicItem] in
return Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}
```return Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count)) // cannot convert value of type 'UnsafeRawPointer' to expected argument type 'UnsafePointer<PublicItem>'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}
```Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count)) // cannot convert value of type 'UnsafeRawPointer' to expected argument type 'UnsafePointer<PublicItem>'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) -> [PublicItem] in
let count = items.count
return Array(UnsafeBufferPointer(start: buffer.baseAddress, count: count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) -> [PublicItem] in
let count = items.count
return Array(UnsafeBufferPointer(start: buffer.baseAddress, count: count))
}
}
```return Array(UnsafeBufferPointer(start: buffer.baseAddress, count: count)) // cannot convert value of type 'UnsafeRawPointer' to expected argument type 'UnsafePointer<PublicItem>'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return UnsafePointer<PublicItem>(items.baseAddress).assumingMemoryBound(to: PublicItem.self).baseAddress.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] {
return UnsafePointer<PublicItem>(items.baseAddress).assumingMemoryBound(to: PublicItem.self).baseAddress.bindMemory(to: PublicItem.self, capacity: items.count)
}
```return UnsafePointer<PublicItem>(items.baseAddress).assumingMemoryBound(to: PublicItem.self).baseAddress.bindMemory(to: PublicItem.self, capacity: items.count) // reference to member 'assumingMemoryBound' cannot be resolved without a contextual typereturn UnsafePointer<PublicItem>(items.baseAddress).assumingMemoryBound(to: PublicItem.self).baseAddress.bindMemory(to: PublicItem.self, capacity: items.count) // value of type '[PrivateItem]' has no member 'baseAddress'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return MemoryLayout<PrivateItem>.size * items.count == MemoryLayout<PublicItem>.size * items.count ?
items.withUnsafeBytes { [PublicItem]($0) } :
[]
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return MemoryLayout<PrivateItem>.size * items.count == MemoryLayout<PublicItem>.size * items.count ?
items.withUnsafeBytes { [PublicItem]($0) } :
[]
}
```items.withUnsafeBytes { [PublicItem]($0) } : // initializer 'init(_:)' requires the types 'PublicItem' and 'UnsafeRawBufferPointer.Element' (aka 'UInt8') be equivalentstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return MemoryLayout<PrivateItem>.size * items.count == MemoryLayout<PublicItem>.size * items.count ?
items.withUnsafeBytes { [PublicItem]($0) } :
[]
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return MemoryLayout<PrivateItem>.size * items.count == MemoryLayout<PublicItem>.size * items.count ?
items.withUnsafeBytes { [PublicItem]($0) } :
[]
}
```items.withUnsafeBytes { [PublicItem]($0) } : // initializer 'init(_:)' requires the types 'PublicItem' and 'UnsafeRawBufferPointer.Element' (aka 'UInt8') be equivalentstruct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { buffer in
Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count))
}
}
```Array(UnsafeBufferPointer(start: buffer.baseAddress, count: items.count)) // cannot convert value of type 'UnsafeRawPointer' to expected argument type 'UnsafePointer<PublicItem>'struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) -> [PublicItem] in
let ptr = buffer.baseAddress?.assumingMemoryBound(to: PublicItem.self)
return Array(UnsafeBufferPointer(start: ptr, count: items.count))
}
}### Instruction:
Write code in Swift programming language. Don't include usage examples or tests.
Function to convert an array of structs with private integer fields into an array of public structs with identical integer fields by directly reinterpreting memory, assuming the structs have the same memory layout and alignment.
### Response:
```swift
struct PrivateItem {
private let value: Int
init(value: Int) {
self.value = value
}
}
struct PublicItem {
let value: Int
}
func reveal(items: [PrivateItem]) -> [PublicItem] {
return items.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) -> [PublicItem] in
let ptr = buffer.baseAddress?.assumingMemoryBound(to: PublicItem.self)
return Array(UnsafeBufferPointer(start: ptr, count: items.count))
}
}
```enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major > rhs.major {
return false
} else if lhs.minor < rhs.minor {
return true
} else if lhs.minor > rhs.minor {
return false
} else if lhs.patch < rhs.patch {
return true
} else if lhs.patch > rhs.patch {
return false
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return lhs.prerelease != 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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major > rhs.major {
return false
} else if lhs.minor < rhs.minor {
return true
} else if lhs.minor > rhs.minor {
return false
} else if lhs.patch < rhs.patch {
return true
} else if lhs.patch > rhs.patch {
return false
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return lhs.prerelease != nil
}
}
}
```self.patch = patch // value of optional type 'Int?' must be unwrapped to a value of type 'Int'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return lhs.prerelease != 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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return lhs.prerelease != nil
}
}
}
```self.patch = patch // value of optional type 'Int?' must be unwrapped to a value of type 'Int'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
let build: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count >= 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2]) ?? 0
var prerelease: String?
var build: String?
if components.count > 3 {
let prereleaseAndBuild = components[3].split(separator: "+")
prerelease = prereleaseAndBuild[0]
if prereleaseAndBuild.count > 1 {
build = prereleaseAndBuild[1]
}
}
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
self.build = build
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major > rhs.major {
return false
} else if lhs.minor < rhs.minor {
return true
} else if lhs.minor > rhs.minor {
return false
} else if lhs.patch < rhs.patch {
return true
} else if lhs.patch > rhs.patch {
return false
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else if let lhsPrerelease = lhs.prerelease {
return false
} else if let rhsPrerelease = rhs.prerelease {
return true
} else {
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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
let build: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count >= 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2]) ?? 0
var prerelease: String?
var build: String?
if components.count > 3 {
let prereleaseAndBuild = components[3].split(separator: "+")
prerelease = prereleaseAndBuild[0]
if prereleaseAndBuild.count > 1 {
build = prereleaseAndBuild[1]
}
}
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
self.build = build
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major > rhs.major {
return false
} else if lhs.minor < rhs.minor {
return true
} else if lhs.minor > rhs.minor {
return false
} else if lhs.patch < rhs.patch {
return true
} else if lhs.patch > rhs.patch {
return false
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else if let lhsPrerelease = lhs.prerelease {
return false
} else if let rhsPrerelease = rhs.prerelease {
return true
} else {
return false
}
}
}
```prerelease = prereleaseAndBuild[0] // cannot assign value of type 'Substring.SubSequence' (aka 'Substring') to type 'String?'build = prereleaseAndBuild[1] // cannot assign value of type 'Substring.SubSequence' (aka 'Substring') to type 'String?'} else if let lhsPrerelease = lhs.prerelease { // value 'lhsPrerelease' was defined but never used; consider replacing with boolean test} else if let rhsPrerelease = rhs.prerelease { // value 'rhsPrerelease' was defined but never used; consider replacing with boolean testenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
guard let major = Int(components[0]),
let minor = Int(components[1]),
let patch = Int(components[2]) else {
fatalError("Invalid version string")
}
let prerelease = string.components(separatedBy: ".").last?.components(separatedBy: "-").last
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
}
if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
}
if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
}
if let lhsPrerelease = lhs.prerelease,
let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
}
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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
guard let major = Int(components[0]),
let minor = Int(components[1]),
let patch = Int(components[2]) else {
fatalError("Invalid version string")
}
let prerelease = string.components(separatedBy: ".").last?.components(separatedBy: "-").last
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
}
if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
}
if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
}
if let lhsPrerelease = lhs.prerelease,
let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
}
return false
}
}
``` // Fatal error: Invalid version stringenum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return false
}
}
}
```self.patch = patch // value of optional type 'Int?' must be unwrapped to a value of type 'Int'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String
init(string: String) {
let components = string.split(separator: ".")
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2]) ?? 0
let prerelease = components[3] ?? ""
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major == rhs.major {
if lhs.minor < rhs.minor {
return true
} else if lhs.minor == rhs.minor {
if lhs.patch < rhs.patch {
return true
} else if lhs.patch == rhs.patch {
return lhs.prerelease < rhs.prerelease
}
}
}
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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String
init(string: String) {
let components = string.split(separator: ".")
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2]) ?? 0
let prerelease = components[3] ?? ""
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major == rhs.major {
if lhs.minor < rhs.minor {
return true
} else if lhs.minor == rhs.minor {
if lhs.patch < rhs.patch {
return true
} else if lhs.patch == rhs.patch {
return lhs.prerelease < rhs.prerelease
}
}
}
return false
}
}
```let prerelease = components[3] ?? "" // left side of nil coalescing operator '??' has non-optional type 'String.SubSequence' (aka 'Substring'), so the right side is never usedself.prerelease = prerelease // cannot assign value of type 'String.SubSequence' (aka 'Substring') to type 'String'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return false
}
}
}
```self.patch = patch // value of optional type 'Int?' must be unwrapped to a value of type 'Int'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return lhs.prerelease != 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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String?
init(string: String) {
let components = string.split(separator: ".")
guard components.count == 3 else {
fatalError("Invalid version string")
}
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-").first ?? "0")
let prerelease = components[2].split(separator: "-").dropFirst().joined(separator: "-")
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease.isEmpty ? nil : prerelease
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major != rhs.major {
return lhs.major < rhs.major
} else if lhs.minor != rhs.minor {
return lhs.minor < rhs.minor
} else if lhs.patch != rhs.patch {
return lhs.patch < rhs.patch
} else if let lhsPrerelease = lhs.prerelease, let rhsPrerelease = rhs.prerelease {
return lhsPrerelease < rhsPrerelease
} else {
return lhs.prerelease != nil
}
}
}
```self.patch = patch // value of optional type 'Int?' must be unwrapped to a value of type 'Int'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String
let build: String
init(string: String) {
let components = string.split(separator: ".")
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-")[0]) ?? 0
let prerelease = components[2].split(separator: "-")[1] ?? ""
let build = components[3] ?? ""
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
self.build = build
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major > rhs.major {
return false
} else if lhs.minor < rhs.minor {
return true
} else if lhs.minor > rhs.minor {
return false
} else if lhs.patch < rhs.patch {
return true
} else if lhs.patch > rhs.patch {
return false
} else if lhs.prerelease < rhs.prerelease {
return true
} else if lhs.prerelease > rhs.prerelease {
return false
} else if lhs.build < rhs.build {
return true
} else {
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 lhsVersion = Version(string: lhs)
let rhsVersion = Version(string: rhs)
if lhsVersion == rhsVersion {
return .orderedSame
} else if lhsVersion < rhsVersion {
return .orderedAscending
} else {
return .orderedDescending
}
}
struct Version: Comparable {
let major: Int
let minor: Int
let patch: Int
let prerelease: String
let build: String
init(string: String) {
let components = string.split(separator: ".")
let major = Int(components[0]) ?? 0
let minor = Int(components[1]) ?? 0
let patch = Int(components[2].split(separator: "-")[0]) ?? 0
let prerelease = components[2].split(separator: "-")[1] ?? ""
let build = components[3] ?? ""
self.major = major
self.minor = minor
self.patch = patch
self.prerelease = prerelease
self.build = build
}
static func < (lhs: Version, rhs: Version) -> Bool {
if lhs.major < rhs.major {
return true
} else if lhs.major > rhs.major {
return false
} else if lhs.minor < rhs.minor {
return true
} else if lhs.minor > rhs.minor {
return false
} else if lhs.patch < rhs.patch {
return true
} else if lhs.patch > rhs.patch {
return false
} else if lhs.prerelease < rhs.prerelease {
return true
} else if lhs.prerelease > rhs.prerelease {
return false
} else if lhs.build < rhs.build {
return true
} else {
return false
}
}
}
```let prerelease = components[2].split(separator: "-")[1] ?? "" // left side of nil coalescing operator '??' has non-optional type 'Substring.SubSequence' (aka 'Substring'), so the right side is never usedlet build = components[3] ?? "" // left side of nil coalescing operator '??' has non-optional type 'String.SubSequence' (aka 'Substring'), so the right side is never usedself.prerelease = prerelease // cannot assign value of type 'Substring.SubSequence' (aka 'Substring') to type 'String'self.build = build // cannot assign value of type 'String.SubSequence' (aka 'Substring') to type 'String'enum ComparisonResult {
case orderedSame
case orderedAscending
case orderedDescending
}
func compareVersions(_ lhs: String, _ rhs: String) -> ComparisonResult {
let lhsComponents = lhs.split(separator: ".")
let rhsComponents = rhs.split(separator: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if let lhsNumber = Int(lhsComponent), let rhsNumber = Int(rhsComponent) {
if lhsNumber < rhsNumber {
return .orderedAscending
} else if lhsNumber > rhsNumber {
return .orderedDescending
}
} else {
if lhsComponent < rhsComponent {
return .orderedAscending
} else if lhsComponent > rhsComponent {
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.split(separator: ".")
let rhsComponents = rhs.split(separator: ".")
for (lhsComponent, rhsComponent) in zip(lhsComponents, rhsComponents) {
if let lhsNumber = Int(lhsComponent), let rhsNumber = Int(rhsComponent) {
if lhsNumber < rhsNumber {
return .orderedAscending
} else if lhsNumber > rhsNumber {
return .orderedDescending
}
} else {
if lhsComponent < rhsComponent {
return .orderedAscending
} else if lhsComponent > rhsComponent {
return .orderedDescending
}
}
}
if lhsComponents.count < rhsComponents.count {
return .orderedAscending
} else if lhsComponents.count > rhsComponents.count {
return .orderedDescending
}
return .orderedSame
}
``` // XCTAssertTrue failed