That concludes your whirlwind tour of the Objective-C language. In this chapter, you learned about two core concepts: memory management and properties. If it all seems a bit overwhelming right now, don’t worry; you will have plenty of opportunities during the next several chapters to try out what you learned here.
This chapter also concludes Part 1 of this book. In Part 2, you learn how to use some of the excellent user interface elements offered by the UIKit framework. You will also begin to code in earnest, so get ready to put your Objective-C knowledge to good use!
The Least You Need to Know
• Instead of garbage collection, the iPhone uses reference counting.
• The golden rule of memory management: if you retain it, ...