So, let's get going with a rapid rundown of Swift's basic types and syntax. As befits a book aimed at developers with some experience of programming under their belts, this chapter will not be about the basics of programming, but simply an overview of what we will assume you know as we move through the following chapters. Think of it as a kind of Swift comments cheat-sheet, if you like.
You already understand something of variable declaration, control flow, arrays and dictionaries, and functions. Make sure you fully understand everything that is presented in this chapter, and if there are any concepts you don't understand by the end of it, it's probably a good idea to delve into them somewhat before moving on to Chapter 5, Advanced Swift.
I have tried in this chapter to flag a few typical gotchas that occur when coming from other languages or earlier versions of Swift. Some of...
