December 2013
Beginner
576 pages
16h 4m
English
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15. Numbers, Strings, and Collections
This chapter describes how to work with some of the basic objects provided in the Foundation framework. These include numbers, strings, and collections, which refer to the capability to work with groups of objects in the form of arrays, dictionaries, and sets.
The Foundation framework contains a plethora of classes, methods, and functions for you to use. Approximately 125 header files are available under OS X. As a convenience, you can simply use the following import:
#import <Foundation/Foundation.h>
Because the Foundation.h file imports nearly all the other Foundation header files, you don’t have to worry about whether you are importing the correct header file. Xcode automatically ...
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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.