December 2011
Beginner
600 pages
11h 25m
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 Mac OS X. As a convenience, you can simply use the following import:
#import <Foundation/Foundation.h>
Because the Foundation.h file imports virtually all the other Foundation header files, you don’t have to worry about whether you are importing the correct header file. Xcode automatically inserts this header ...
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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.