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Mastering Grand Central Dispatch

Serial and Concurrent Dispatch Queues

Mastering Grand Central Dispatch
1 What Is Grand Central Dispatch Plus 07:40
2 Working With Dispatch Queues Plus 10:22
3 Serial and Concurrent Dispatch Queues Plus 11:12
4 Main and Global Dispatch Queues Plus 09:04

You should now have a fundamental understanding of dispatch queues. A dispatch queue is responsible for managing the execution of blocks of work. Grand Central Dispatch determines which thread is used for the execution of a block of work. Developers unfamiliar with Grand Central Dispatch wrongly assume that a dispatch queue is tied to a particular thread. Remember that Grand Central Dispatch doesn't make a guarantee as to which thread is used for the execution of a block of work submitted to a dispatch queue.

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