To get the most out of this book

It is assumed that you will be familiar with basic computer science and programming in the Swift programming language on Apple devices.

Software/hardware covered in the book	Operating system requirements
macOS	A recent macOS Version, at least Sonoma (14.2.1 or later), in order to follow examples based on Xcode 15.2 for the last chapters.
Xcode	Most examples will run on Xcode 14.3 or later except when indicated at the beginning of the chapter. The chapters on SwiftData and visionOS require Xcode 15.2 or later.
Physical devices	You can follow the examples for iOS and iPadOS by using the simulator; you don’t need physical devices for learning. To run the code in this book on macOS, you will need macOS 14.2.

If you are using the digital version of this book, we advise you to type the code yourself or access the code from the book’s GitHub repository (a link is available in the next section). Doing so will help you avoid any potential errors related to the copying and pasting of code.

You will need a developer’s account only if you want to use physical devices. Xcode can be downloaded for free from the Mac App Store and won’t require a developer’s account in order to run your own applications on the simulator.