Objective-C Programming

Objective-C is an object-oriented programming language. It was named after the concept of adding objects to the C language.

Objective C was introduced with NeXTSTEP and OPENSTEP, and was considerably extended in application due to its use with the Cocoa libraries under Mac OS X or the GNUstep libraries. However, you can program in Objective-C without these libraries if you wish.

Because not everyone uses OPENSTEP or Mac OS X, we will introduce these library-specific details later.

Familiarity with the C programming language is required, as Objective-C shares a lot with it, hence its name.

Contents

 * Objective-C concepts
 * The basic concepts of object-oriented programming in terms of Objective-C terminology.
 * Getting Started
 * Invoking Objective-C compilers
 * Objective-C syntax
 * The basic details of how to write classes in Objective-C. Writing the interface and implementation.
 * Objective-C in depth
 * Objective-C techniques, using the `Object` class, categories, protocols.
 * Objective-C advanced features
 * Advanced Objective-C, selectors, message forwarding, archiving.