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Mastering Grand Central Dispatch

Main and Global Dispatch Queues

The application we worked with in the previous episodes creates and manages a serial dispatch queue and a concurrent dispatch queue. Creating a dispatch queue manually is fine, but it isn't always necessary.

Grand Central Dispatch manages a handful of dispatch queues your application can use. The main dispatch queue is one of these dispatch queues. In this episode, we find out which dispatch queues Grand Central Dispatch provides and when you should consider using them.

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Next Episode "Synchronous and Asynchronous Execution"