iOS Programming: The Big Nerd Ranch Guide, Second Edition

21Instruments

In Chapter 4, you learned about using the debugger to find and fix problems in your code. Now we’re going to look at other tools available to iOS programmers and how to integrate them into application development.

The Static Analyzer

There is a memory leak in your TouchTracker application. When the user double-taps, the screen clears. At this point, all instances of Line should be deallocated, but they aren’t. In the first part of this chapter, you’ll examine this leak with Xcode’s static analyzer.

When you build an application, you can ask Xcode to analyze your code. The static analyzer then makes educated guesses about what would happen if that code were to be executed and informs you of potential problems, like a memory leak. ...