Swift Tutorial

Swift is the programming language Apple made for building apps on iPhone, iPad, Mac, Apple Watch and Apple TV.

Swift is fast, safe and clean. Its code is easy to read, even for beginners, and it catches many mistakes before your app runs.

Why Learn Swift?

• It is the main language for iOS and macOS apps
• Its syntax is simple and modern
• Optionals make it safe to handle missing values
• iOS developers are well paid, both in jobs and in freelancing

What You Will Learn

• How to write and run Swift code
• Constants, variables and data types
• Operators and strings
• Conditions, switch and optionals
• Loops, arrays, dictionaries and sets
• Functions and closures
• Structs and classes

A First Example

let student = "Ayesha"
let course = "App Development"
print("\(student) has joined \(course)")

Ayesha has joined App Development

You can run these examples in Xcode Playgrounds on a Mac, in the Swift Playgrounds app on iPad, or in any online Swift compiler if you use Windows.

Exercises and Quiz

Each lesson ends with an exercise, and the final lesson is a quiz on everything.

What to Learn After Swift

Next, learn SwiftUI to design app screens. If you also want Android apps, try the Kotlin tutorial. For server code, Go is a good next language.