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__weak and strong variable behaviour with blocks...

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method returns before completionhandler...

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What is the purpose of using blocks...

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Block completion handler reference is nil after completing background fetch...

MKDirections calculateETAWithCompletionHandler: in background state...

When I use Y-Combinator and block in C, I meet a strange thing in parameter value...

Retain Cycles for Blocks Inside of Blocks...

Correct management of addObserverForName:object:queue:usingBlock:...

Method that returns block...

Confusion regarding blocks in ios...

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invalidate NSTimer inside dispatch_async...

Objective C - release blocks individually...

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Is it correct to use local variable name "self" in blocks?...

Block Syntax Objective C...