Chapter 2. Making a Good Application Architecture in Swift

Swift is a high-performance programming language, as you learned in the previous chapter. You also learned that writing good code is even more important than making it high-performance code. In this chapter, we will put the all-powerful features of Swift together and create an application. We will do this by covering the following topics:

• Writing clean code

• Immutability

• Value types and immutability

• Representing the state with classes

• Representing the absence of values with optionals

• Functional programming

• Generics