Obj-C: __block variables

Question

Is it possible to assign a local variable a value whose scope is outside a block and have it retain its value? In particular, I\'m coding for iOS and I have a nested block i

Answer 1

you are simply defining your block but not calling it.

Try this :)

__block NSString *str;
void (^someBlock)(id) =  ^(id param1)
{
    str = @"iPhone";
};
someBlock(nil);
[str getCharAtIndex:1];

In this case I call it directly but usually the block itself is a parameter of some method or function.