2 The Swift Language
Swift is a new language that Apple introduced in 2014. It replaces Objective-C as the recommended development language for iOS and Mac. In this chapter, you are going to focus on the basics of Swift. You will not learn everything, but you will learn enough to get started. Then, as you continue through the book, you will learn more Swift while you learn iOS development.
Swift maintains the expressiveness of Objective-C while introducing a syntax that is safer, succinct, and readable. It emphasizes type safety and introduces advanced features such as optionals, generics, and sophisticated structures and enumerations. Most importantly, Swift allows the use of these new features while relying on the same tested, ...
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