May 2014
Intermediate to advanced
624 pages
19h 43m
English
Content preview from Xcode 5 Start to Finish: iOS and OS X Development
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Diagnostics
The Diagnostics tab controls a number of diagnostic and logging options for both OS X and iOS that historically were controlled by environment variables. The most famous is detecting overreleased objects by setting NSZombieEnabled to YES. Diagnostics presents the most frequently used options as checkboxes. Search the Documentation browser for Technical Note TN2124, “Mac OS X Debugging Magic,” for a description of them and their use. The “Debugging Magic” notes (the iOS version is TN2239) are worth reading all the way through.
Note
The “zombie” technique is a useful way to track down attempts to use an object that had been deallocated by Cocoa’s memory-management system. Ordinarily, accessing a disposed-of object would crash, usually ...
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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.