I must be doing something wrong, 开发者_C百科but the Automatic Reference Counting docs don\'t give me a hint on what it might be. What I\'m doing is calling a method with a block callback from inside
Here\'s a weird one.My application sends a shutdown message to an object controlling a hardware device, with a completion block as an argument.The shutdown message returns a BOOL, depending on whether
I write a black box class that does heavy processing in the background using Grand Central Dispatch. I intend to provide a continuation style API, something like:
This is an extension of this queston: Is it possible to create a category of the "Block" object in Objective-C.
Just noticed the __block keyword 开发者_Go百科in some Objective-c code like the following: // myString passed into the method
Touching my _f开发者_Python百科ollow button, the ^ block for the _learn button is triggered. It looks as if it is firing the wrong block because it is an anonymous or unnamed block. I tried to name it
I\'ve decided to try to use blocks for control flow in Objective-C and am running into some issues with calling multiple blocks inline.
If one def开发者_JAVA技巧ines a block within a block within a function, what scope does the inner block have access to.
I’m writing an Objective-C library and I’d like it to offer a simple pluggable logging mechanism, so that the library use开发者_如何学Pythonr can turn the logging on and off. I thought an interestin
I am using GCD on iOS to perform a a time-consuming task on a background thread. The API has a start method that takes two blocks as arguments, both called on the main queue. The first is called when
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