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Use dispatch_once within GCD

/ Published in: Objective C
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  1. dispatch_queue_t get_my_background_queue()
  2. {
  3. 	static dispatch_once_t once;
  4. 	static dispatch_queue_t my_queue;
  5. 	dispatch_once(&once, ^{
  6. 		my_queue = dispatch_queue_create("com.example.background", NULL);
  7. 	});
  8. 	return my_queue;
  9. }
  10.  

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