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Explain the difference between NSOperationQueue concurrent and non-concurrent.
In the context of an NSOperation object, which runs in an NSOperationQueue, the terms concurrent and non-concurrent do not necessarily refe...
What is retain counts?
Retain counts are the way in which memory is managed in Objective-C. When you create an object, it has a retain count of 1. When you send a...
NSThread vs GCD
Migrating Away from Threads The idea is that you eliminate work on your part, since the paradigm fits MOST code more easily. It reduces ...