objective-c-blocks
Error trying to assigning __block ALAsset from inside assetForURL:resultBlock:
I am trying to create a method that will return me a ALAsset for a given asset url. (I need upload the asset later and want to do it outside the result block with the result.)[详细]
2023-04-09 18:03 分类：问答What's the harm of retain self in block?(Objective-C, GCD)
In many guide about how to use blocks and GCD, one tip is always mentioned : do not retain self in block.[详细]
2023-04-08 10:56 分类：问答Pass a variable argument list
I would like to create a subclass of UIActionSheet that uses blocks instead of delegation. So I created the following class:[详细]
2023-04-08 01:26 分类：问答Traversing key/values of an NSDictionary, is enumerateKeysAndObjectsUsingBlock more efficient than looping keys and calling objectForkey:?
I need to traverse all key/values pairs of a dictionary and do something with both fields. I am wondering what is more efficient, the traditional \'foreach key\' approach or the blocks approach using[详细]
2023-04-06 13:18 分类：问答How to make a macro to computeTime of block?
I am define TOOLS_COMPUTE_TIME like this #define TOOLS_COMPUTE_TIME(op) [Tools computeTimeWithName:__PRETTY_FUNCTION__ block:(op)][详细]
2023-04-05 20:55 分类：问答Objective-C: Is there an -invoke on blocks that takes parameters?
As you may be aware, blocks take -invoke: void(^foo)() = ^{ NSLog(@\"Do stuff\"); }; [foo invoke];// Logs \'Do stuff\'[详细]
2023-04-05 19:59 分类：问答C w/ Blocks: Stack-based blocks going out of scope
In one of Apple\'s header files for libdispatch, queue.h, the following warning appears: // The declaration of a block allocates storage on the stack.[详细]
2023-04-05 18:59 分类：问答Will ARC tell me when I must use __block?
AFA开发者_StackOverflow社区IK, __block is used when you\'re changing, inside the block, the address that a variable (declared outside the block) points to.[详细]
2023-04-05 18:58 分类：问答Objective C Preserve Changes Made by A Block To A Property
For some reason this code does not work: [request开发者_运维百科 setCompletionBlock:^{ NSString *response = [request responseString];[详细]
2023-04-05 07:25 分类：问答Block in @synchronized
Executing a block inside @synchronized seems to negate the lock. - (void)method { @synchronized(self) {[详细]
2023-04-05 00:13 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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