Swift Programming Language — this tutorial takes you step by step from the basics all the way up to the foundation you need to build iOS, macOS, watchOS, and tvOS apps. Swift has clean syntax and strong type safety, which makes it easy to pick up if you're just starting out with app development, while still being genuinely useful in real projects.
On this page, each concept is explained together with a code example, its output, points to watch out for, common mistakes, and practical usage. Feel free to copy the code and try it out in Xcode Playground or an online Swift playground.
- Swift syntax, variables, constants, data types
- Operators, strings, arrays, dictionaries
- if, switch, for-in, while control flow
- Functions, optionals, structs, classes, enums
- Protocols, closures, error handling
- Combining concepts together in a mini project
Pick a lesson from the menu on the left and work through them step by step. Try out short snippets of code early on, and as you gradually tie project logic together later, you'll find yourself understanding Swift faster and faster.