Overview of Swift

Key Features of Swift:

Type Safety: Swift enforces type safety, ensuring that variables are always used consistently, reducing errors at runtime. This feature promotes better code quality and reliability. Learn more
Optionals: Swift introduces optionals, a powerful feature that helps manage the absence of a value safely. It allows developers to define whether a variable can hold a value or not. Learn more
Closures: Swift supports closures, which are self-contained blocks of functionality that can be passed around and used in your code. This feature enhances flexibility and reusability. Learn more

Basic Syntax

Here’s a simple example of Swift code:

let message = "Hello, Swift!"
    print(message)

This example demonstrates Swift's ability to handle strings and print them to the console using the print function.

Swift Examples:

Here are several examples of Swift code that demonstrate different programming concepts:

1. Basic Function

func add(a: Int, b: Int) -> Int {
        return a + b
    }
    
    print(add(5, 3)) // Output: 8

This function takes two parameters and returns their sum. Learn more

2. Class Example

class Animal {
        var name: String
    
        init(name: String) {
            self.name = name
        }
    
        func speak() -> String {
            return "\(name) makes a noise."
        }
    }
    
    let dog = Animal(name: "Dog")
    print(dog.speak()) // Output: Dog makes a noise.

This example shows how to create a class and instantiate an object in Swift. Learn more

3. Protocol Example

protocol Speak {
        func speak() -> String
    }
    
    class Person: Speak {
        func speak() -> String {
            return "Hello!"
        }
    }
    
    let person = Person()
    print(person.speak()) // Output: Hello!

Protocols define a blueprint of methods, properties, and other requirements. Classes can conform to protocols, allowing for a structured approach to code organization. Learn more

4. Conditional Statements

Conditional statements are essential in programming to execute different code paths based on conditions:

func checkAge(age: Int) -> String {
        if age >= 18 {
            return "You are an adult."
        } else {
            return "You are a minor."
        }
    }

Input

Output