June 2011
Intermediate to advanced
590 pages
19h 31m
English
Content preview from iOS Programming: The Big Nerd Ranch Guide, Second EditionBecome 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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Reference Counting
In the Cocoa Touch framework, Apple has adopted manual reference counting to manage memory and avoid premature deallocation and memory leaks.
To understand reference counting, imagine a puppy. When the puppy is born, it has an owner. That owner later gets married, and the new spouse also becomes an owner of that dog. The dog is alive because they feed it. Later on, the couple gives the dog away. The new owner of the dog decides he doesn’t like the dog and lets it know by kicking it out of the house. Having no owner, the dog runs away and, after a series of unfortunate events, ends up in doggy heaven.
What is the moral of this story? As long as the dog had an owner to care for it, it was fine. When it no longer had an owner, ...
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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.