August 2011
Intermediate to advanced
552 pages
23h 48m
English
Content preview from Advanced Mac OS X Programming: The Big Nerd Ranch GuideBecome 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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Memory Ownership Issues
One of the difficulties involved when using dynamic memory is determining who is responsible for freeing a piece of allocated memory when nobody else is using it. This is known as memory ownership. There are many different solutions to this problem, each with their own tradeoffs and benefits, as witnessed by Java and Cocoa garbage collection, C++ RAII (resource acquisition is initialization), and Cocoa’s reference counting.
There are no uniform rules for memory ownership for Unix and C library calls, so you pretty much need to check the manpage for the calls in question (which is usually a good idea anyway). For instance:
getenv() returns a char *, but you do not need to free it since the environment variables are all ...
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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.