Just like you would with a function pointer:
- (void) executeBlock:(void(^)(NSString * param))block {
block(@"Hello world!");
}
Cheers,
Dave
On Sep 17, 2010, at 1:32 PM, ico wrote:
> Hi All,
>
> I just wonder how to invoke an inline block which is passed as function
> argument.
> We can invoke a block if we declare a block as a variable, what if you
> simply implement
> them inline where they are required as an argument. It seems you have
> nothing reference
> to that block address.
>
> For example, NSArray class has a method as follow:
> - (NSArray *)sortedArrayUsingComparator:(NSComparator)*cmptr*
> *
> *
> *the argument cmptr can simply be an inline block like:*
> *[stringsArray sortedArrayUsingComparator:^(id string1, id string2) {*
> * blah, blah;*
> *}];*
> *
> *
> *I just wonder inside the sortedArrayUsingComparator method, how to call
> that block for*
> *comparing two string since you don't have a reference to it. Another
> example is qsort_b*
> function. I just can't find the source code for those two methods.
>
> Thanks for your help in advance.
>
> --
> ==========================
> Life isn't about finding yourself.
> Life is about creating yourself.
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