February 2014
Beginner
336 pages
8h 42m
English
Content preview from Beginning iOS Programming: Building and Deploying iOS Applications
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Chapter 2Introduction to Objective-C
WHAT YOU WILL LEARN IN THIS CHAPTER:
- An overview of Objective-C
- Declaring classes and instancing objects
- Memory management in Objective-C
- The Model-View-Controller design pattern
- Delegates and protocols in Objective-C
- Overview of blocks
- Error handling patterns in Objective-C
The first step to creating the Bands app is to learn about the language it will be written in, Objective-C. Objective-C is the programming language used to develop both Mac and iOS applications. It’s a compiled language, meaning that it gets compiled down to raw machine code as opposed to being interpreted at runtime. As its name implies, it’s based on the C programming language. It’s actually a superset of C that adds object-oriented programming methodologies. Because it’s a descendant of C, its syntax and concepts are similar to other C-based languages. In this chapter you learn the basics of Objective-C by comparing it to Java and C#.
EXPLORING THE HISTORY OF OBJECTIVE-C
Objective-C was developed in the early 1980s by a company called Stepstone. It was working on a legacy system built using C but wanted to add reusability to the code base by using objects and messaging. The concept of object-oriented programming (OOP) had been around for a while. The Smalltalk language developed by Xerox was the most prominent object-oriented language in use at the time. Objective-C got its start by taking some of the concepts and syntax of Smalltalk and adding it to C. This can ...
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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.
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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.