i. What You Need

To follow along with the tutorials in this book, you’ll need the following:

• A Mac running macOS Sonoma 14.5 or later. with the latest point release and security patches installed. This is so you can install the latest version of the required development tool: Xcode.
• Xcode 16.2 or later. Xcode is the main development tool for writing code in Swift. You need Xcode 16.2 at a minimum, since that version includes Swift 6 Xcode playgrounds. You can download the latest version of Xcode for free from the Mac App Store, here: apple.co/1FLn51R

If you haven’t installed the latest version of Xcode, be sure to do that before continuing with the book. The code covered in this book depends on Swift 6 and Xcode 16.2 — you may get lost if you try to work with an older version or work outside the playground environment that this book assumes.