August 2016
Intermediate to advanced
1027 pages
23h 11m
English
Content preview from Swift: Developing iOS ApplicationsBecome 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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Projects
Now that we have a pretty good understanding of Objective-C, let's discuss what Objective-C code looks like in a project. Unlike the Swift code, Objective-C is written in two different types of files. One of the types is called a header file and ends in the extension h. The other type is called an implementation file and ends in the extension m.
Before we can really discuss what the difference is between the two, we first have to discuss code exposure. In Swift, all the code you write is accessible to all other code in your project. This is not true with Objective-C. In Objective-C, you must explicitly indicate that you want to have access to the code in another file.
Header files
The header files are the types of files that can be included ...
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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.