Re: unapprehended about block in code
Re: unapprehended about block in code
- Subject: Re: unapprehended about block in code
- From: Viacheslav Karamov <email@hidden>
- Date: Fri, 08 Aug 2014 10:58:52 +0300
"completion" is a block with return type void which has a parameter of
type BOOL.
A user could pass nil instead of block, so we need to check if block is
supplied before invoke it.
08.08.14 10:45, User Mac wrote:
- (void)dismissAnimated:(BOOL)animated completion:(void(^)(BOOL finished))completion
{
void(^completionBlock)(BOOL) = ^(BOOL finished){
[self somefunction];
if(completion)
{
completion(finished);
}
};
…………
………...
}
I want to know what type of “completion",is it boolean or block? Why use “if” to judge “completion"? And what is the result of code”completion(finished)”.
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