Update 8/4/17: Updated for Swift 4 and Xcode 9.

Sometimes when learning a new language it’s handy to have a cheat sheet as you are getting used to syntax.

So I’ve made this cheat sheet for learning Swift 4:

It summarizes the most important Swift syntax on one page to get you up to speed quickly, including:

Class Implementation

Methods

Creating/Using an Object

Declaring Variables

Control Flow

String Quick Examples

Array Quick Examples

Dictionary Quick Examples

You can also download a Swift 4 playground with the examples from the cheat sheet.

Let me know if you have any comments/suggestions on how to improve this. I’ll be updating this periodically as Swift changes.

Want to learn more? Check out out our new Swift 4 books – covering everything you need to know about Swift 4, iOS 11, and more!