March 2014
Beginner
368 pages
8h 22m
English
Content preview from Sams Teach Yourself Objective-C in 24 Hours, Second Edition
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Hour 18. Extending a Class with Categories and Extensions
What You’ll Learn in This Hour
Differentiating categories and protocols
Choosing when to use a category
Comparing categories and subclasses
Building and testing a category
Comparing Categories and Protocols
In Hour 17, “Extending a Class with Protocols and Delegates,” you saw how to specify ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.