How To Extend Objective-C Classes With Categories (Part One)

http://howtomakeiphoneapps.com/ Here is how to extend the functionality of existing classes like NSString and NSURL using categories. This is a real clean way to extend and customize objects for your app without creating sub-classes. This makes categories a nice way to get some flexibilty and code reuse.

Category:

Howto & Style

Tags:

• iphonedev
• iPhone programming
• cocoa-touch
• objective-c

[SkupTech]

thanks! nice video