Technical requirements
The Xcode playground for this chapter is in the Chapter06
folder of the code bundle for this book, which can be downloaded here:
Check out the following video to see the code in action:
https://youtu.be/H9KeyLWJwTU
If you wish to start from scratch, create a new playground and name it FunctionsAndClosures
.
You can type in and run all the code in this chapter as you go along. Let’s start by learning about functions.