November 2025
Beginner
634 pages
12h 20m
English
Content preview from iOS 26 Programming for Beginners - Tenth Edition
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2
Simple Values and Types
Now that you have had a short tour of Xcode in the previous chapter, let’s look at the Swift programming language, which you will use to write your app.
First, you’ll explore Swift playgrounds, interactive environments where you can type in Swift code and have the results immediately displayed. Then, you’ll study how Swift represents and stores various types of data. After that, you’ll look at some cool Swift features, such as type inference and type safety, which help you to write more concise code and avoid common errors. Next, you’ll learn how to perform common operations on data. Finally, you’ll learn how to print messages to the Debug area to help you troubleshoot issues.
By the end of this chapter, you will be ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.