The 4th edition of the world's bestselling book on Objective-C programming fully updated to cover Xcode 4.2 and Automatic Reference Counting (ARC) Written by bestselling author and popular trainer Stephen Kochan, Programming in Objective-C is a clear, step-by-step tutorial on the fundamentals of Objective-C programming for Apple's iOS and Mac platforms. Programming in Objective-C makes no assumptions about prior experience with either object-oriented programming languages generally or with the C language specifically. Both beginners and experienced programmers alike can use this book to quickly and effectively learn the fundamentals of Objective-C programming. Readers can also learn the concepts of object-oriented programming without having to first learn all of the intricacies of the underlying procedural language (C). This unique approach to learning Objective-C, combined with an abundance of complete code examples, clear diagrams and tables, exercises at the end of each chapter, and an author-supported readers web forum, makes Programming in Objective-C ideally suited for either self-study or classroom use. The fourth edition of Programming in Objective-C includes several critical additions and enhancements: Updates to cover the latest versions of Xcode (4.2) and the iOS SDK (iOS5) Detailed discussion of how to use Automatic Reference Counting (ARC) to improve and simplify memory management in Objective-C programming improvements in key areas to incorporate reader feedback and suggestions Programming in Objective-C, Fourth Edition Table of Contents 1 Introduction Part I: The Objective-C Language 2 Programming in Objective-C 3 Classes, Objects, and Methods 4 Data Types and Expressions 5 Program Looping 6 Making Decisions 7 More on Classes 8 Inheritance 9 Polymorphism, Dynamic Typing, and Dynamic Binding 10 More on Variables and Data Types 11 Categories and Protocols 12 The Preprocessor 13 Underlying C Language Features Part II: The Foundation Framework 14 Introduction to the Foundation Framework 15 Numbers, Strings, and Collections 16 Working with Files 17 Memory Management and Automatic Reference Counting (ARC) 18 Copying Objects 19 Archiving Part III: Cocoa, Cocoa Touch, and the iOS SDK 20 Introduction to Cocoa and Cocoa Touch 21 Writing iOS Applications Appendixes A Glossary B Address Book Program Source Code.