C
Crash Course in Objective-C
Objective-C is an object-oriented programming language used by Apple primarily for programming Mac OS X and iOS applications. It is an extension to the standard ANSI C language and hence it should be an easy language to pick up if you are already familiar with the C programming language. This appendix assumes that you already have some background in C programming and focuses on the object-oriented aspects of the language. If you are coming from a Java or .NET background, many of the concepts should be familiar to you; you just have to understand the syntax of Objective-C and, in particular, pay attention to the section on memory management.
Objective-C source code files are contained in two types of files:
- .h — header files
- .m — implementation files
For the discussions that follow, assume that you have created a Single View Application project using Xcode named LearningObjC and added an empty NSObject class named SomeClass to your project (see Figure C-1).
FIGURE C-1
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