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See Also

Managing Dispatch Queues

class DispatchQueue

DispatchQueue manages the execution of work items. Each work item submitted to a queue is processed on a pool of threads managed by the system.

class DispatchSpecificKey

DispatchSpecificKey is a class that encapsulates keys that can be associated with a contextual value on a DispatchQueue using the setSpecific<T>(key:value:) method, and accessed using the getSpecific<T>(key:) method.

func dispatch_get_current_queue()

Returns the queue on which the currently executing block is running.

func setTarget(queue: DispatchQueue?)

Sets the target queue for the given object.

func dispatchMain()

Executes blocks submitted to the main queue.