小编J-Q*_*J-Q的帖子

这不是一个微不足道的问题StackOverFlow,在此之前,至少我没有发现任何类似的东西,当然我也是googled它,并阅读大多数高排名的结果.

顺便说一句,如果这里的任何人对Objective C’s block语法感觉不舒服,请访问此页面 http://fuckingblocksyntax.com,
然后再抛出任何与块相关的问题.

我的问题的第一部分是:the background of declaration of block-parameter, as well as invoking a method which has a block-parameter ( in many cases, a completionBlock )

calleE-methodMyWorker类中的" ":......

@implementation MyWorker
-(void) aWorkerMethodNeedsABlockInput: ((void)(^)( NSObject *, double )) blockParam
{
       NSObject *anObj=[[ NSObject alloc] init];
       double *aDouble;
       [self retrieveTimeConsumingResults: anObj withNumberOfTry: aDouble ];
       blockParam ( anObj, * aDouble ); 

}

@end

calleR-methodMyManager类中的" ":

@interface myManager()
@property …