November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
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Fast Enumeration
Fast enumeration was added to Objective-C in version 2.0. It is a feature to simplify enumerating the objects in a collection and performing activities on the enumerated objects. Before fast enumeration, there were two approaches to enumerating the objects in a collection. The first approach, which works with collection types such as NSSet, NSArray, and NSDictionary, is to use an NSEnumerator to iterate over the objects (or also keys for an NSDictionary) in a collection.
NSArray *myArray = @[@"Item One", @"Item Two", @"Item Three"];NSEnumerator *enumerator = [myArray objectEnumerator];NSString *arrayString;while ((arrayString = [enumerator nextObject]) != nil){ NSLog(@"String is: %@",arrayString); ...
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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.