December 2013
Intermediate to advanced
132 pages
1h 58m
English
Content preview from Objective-C Quick Syntax Reference
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CHAPTER 18
Inheritance
When you want to code a new class that shares most of the properties and methods of another class, you can use inheritance. A class that is inherited from another class takes on all the properties and methods of the superclass.
You use inheritance when you want to leverage the work that has already been completed and then add more properties and methods to customize the new class. This pattern gives us code reuse.
You saw examples of inheritance in Chapter 16: when you created the Project class, you inherited NSObject. This gave Project all the methods and properties of NSObject.
A more interesting application happens when ...
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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.