There is no keyboard shortcut to show and hide the variables view within the debug area (as there is for the console), so if it's not showing, click on the left disclosure button in the bottom--right corner of the window, next to the trash icon:
First we're going to need an app to test. We will create a command--line tool (meaning simply a program that has no UI), that will allow us to focus on the features we are looking at, without having to whip up a full app.
Yes, a full app doesn't take much work, we can use the Xcode template and that will be fine. In fact, later in this chapter, we will. But it's a good idea first to ...
