November 2012
Beginner
480 pages
12h 18m
English
book
Learning Objective-C 2.0: A Hands-on Guide to Objective-C for Mac and iOS Developers, Second Edition
by Robert Clair
Content preview from Learning Objective-C 2.0: A Hands-on Guide to Objective-C for Mac and iOS Developers, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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6. Classes and Objects
Objects are the basis for object-oriented programming. This chapter gets down to the business of making objects. The chapter is divided into five main sections:
• Defining classes
• Extending classes by subclassing
• Creating objects (instances of a class)
• Destroying objects
• Copying objects
Some of these topics were covered briefly in Chapter 3, “An Introduction to Object-Oriented Programming.” They are presented here in greater detail.
Defining a Class
When you define an Objective-C class, you have to provide the compiler with two sets of information. The first set is essentially a blueprint for constructing instances of the class. You have to specify the class’s name, the class’s superclass, a list of the names and ...
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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.
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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.