Swift Programming: The Big Nerd Ranch Guide

Playing in a Playground

As you can see in Figure 1.4, a Swift playground opens with two sections. On the left, you have the Swift code editor. On the right, you have the results sidebar. The code in the editor is evaluated and run, if possible, every time the source changes. The results of the code are displayed in the results sidebar.

Figure 1.4 Your new playground

The command prompt reads: //: Playground - noun: a place where people can play import Cocoa var str = “Hello, playground” The result pane on the right reads, "Hello, playground”

Let’s take a look at your new playground. Notice that the first line of text is ...