Swift Quick Syntax Reference

Chapter    31

Classes

Use classes to define types in Swift that you want to use as objects. Like structures, classes give you a way of grouping related information and behavior together.

To define a Swift class, use the class keyword (see Listing 31-1).

Listing 31-1. Defining Classes

class Person {    var name: String = "Name"    var age:Int = 0    func profile() -> String {       return "I'm \(self.name) and I'm \(self.age) years old."    }}

In Listing 31-1, you defined a class named Person. Your Person class consists of a string for a person’s name and an integer for a person’s age.

When used like this in structures (Chapter 30) and classes, these variable and constant types are called properties.

Class Instances (Objects)

In Listing 31-1 ...