SWIFT Swift

AI-powered detection and analysis of Swift files.

📂 Code

🏷️ .swift

🎯 text/x-swift

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Instant SWIFT File Detection

Use our advanced AI-powered tool to instantly detect and analyze Swift files with precision and speed.

File Information

File Description

Swift

Swift Programming Language

What is a Swift file?

A Swift (.swift) file is a source code file written in Swift, Apple's modern programming language designed for iOS, macOS, watchOS, and tvOS development. Swift combines the performance and efficiency of compiled languages with the simplicity and interactivity of popular scripting languages. Swift files contain classes, structures, enums, protocols, and other constructs that compile to optimized native code while providing memory safety and modern language features.

More Information

Swift was developed by Apple and first announced at the Worldwide Developers Conference (WWDC) in June 2014, with version 1.0 released in September 2014 alongside iOS 8 and Xcode 6. The language was created by Chris Lattner and his team to eventually replace Objective-C as the primary language for Apple platform development. Swift was designed to be safe, fast, and expressive, addressing many of the pain points developers experienced with Objective-C.

In 2015, Apple open-sourced Swift, making it available for other platforms including Linux and Windows. Swift's design philosophy emphasizes safety, performance, and expressiveness. The language includes features like optionals for null safety, automatic reference counting for memory management, type inference, and powerful error handling. Swift has rapidly gained adoption not only for Apple platform development but also for server-side development and cross-platform applications.

Swift Format

Swift has a clean, readable syntax with modern language features:

Basic Syntax

Type safety - Strong typing with type inference
Optionals - Safe handling of nil values
Automatic Reference Counting - Memory management without garbage collection
Protocol-oriented programming - Composition over inheritance
Value types - Structs and enums as first-class citizens
Functional programming - Higher-order functions and closures

Key Features

Safe by default - Prevents common programming errors
Fast and efficient - Performance comparable to C++
Expressive syntax - Easy to read and write
Interoperability - Seamless integration with Objective-C
Playgrounds - Interactive learning and prototyping
Package Manager - Built-in dependency management

Data Types and Collections

Basic types - Int, Double, String, Bool
Optionals - String?, Int?, etc. for null safety
Collections - Array, Dictionary, Set
Tuples - Compound values
Enums - Powerful enumeration types with associated values
Structs and Classes - Value types and reference types

Common Patterns

import Foundation

// Struct (value type)
struct Person {
    let name: String
    var age: Int
    let email: String?
    
    // Computed property
    var isAdult: Bool {
        return age >= 18
    }
    
    // Method
    func greet() -> String {
        return "Hello, I'm \(name)"
    }
    
    // Mutating method for value types
    mutating func haveBirthday() {
        age += 1
    }
}

// Protocol definition
protocol Drawable {
    func draw()
}

// Class (reference type)
class Shape: Drawable {
    let color: String
    
    init(color: String) {
        self.color = color
    }
    
    func draw() {
        print("Drawing a \(color) shape")
    }
}

class Circle: Shape {
    let radius: Double
    
    init(color: String, radius: Double) {
        self.radius = radius
        super.init(color: color)
    }
    
    override func draw() {
        print("Drawing a \(color) circle with radius \(radius)")
    }
    
    var area: Double {
        return Double.pi * radius * radius
    }
}

// Enum with associated values
enum Result<T, E> {
    case success(T)
    case failure(E)
}

// Extension
extension String {
    var isValidEmail: Bool {
        return self.contains("@") && self.contains(".")
    }
}

// Higher-order function
func processArray<T>(_ array: [T], transform: (T) -> T) -> [T] {
    return array.map(transform)
}

// Main execution
func main() {
    // Creating instances
    var person = Person(name: "Alice", age: 25, email: "[email protected]")
    print(person.greet())
    
    // Optional binding
    if let email = person.email {
        print("Email is valid: \(email.isValidEmail)")
    }
    
    // Pattern matching with switch
    let circle = Circle(color: "red", radius: 5.0)
    circle.draw()
    
    // Closures
    let numbers = [1, 2, 3, 4, 5]
    let doubled = numbers.map { $0 * 2 }
    print("Doubled: \(doubled)")
    
    // Error handling
    enum NetworkError: Error {
        case noConnection
        case timeout
    }
    
    func fetchData() throws -> String {
        // Simulated network call
        throw NetworkError.timeout
    }
    
    do {
        let data = try fetchData()
        print("Data: \(data)")
    } catch NetworkError.timeout {
        print("Request timed out")
    } catch {
        print("Unknown error: \(error)")
    }
    
    // Guard statement
    func processUser(name: String?) {
        guard let validName = name, !validName.isEmpty else {
            print("Invalid name")
            return
        }
        print("Processing user: \(validName)")
    }
}