Class clusters are a design pattern that the Foundation framework makes extensive use of. Class clusters group a number of private concrete subclasses under a public abstract superclass. The grouping of classes in this way simplifies the publicly visible architecture of an object-oriented framework without reducing its functional richness.
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In the context of an NSOperation object, which runs in an NSOperationQueue, the terms concurrent and non-concurrent do not necessarily refe...
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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... -
Migrating Away from Threads The idea is that you eliminate work on your part, since the paradigm fits MOST code more easily. It reduces ...