Objective-C Language Blocks Blocks as local variables
Example
returnType (^blockName)(parameterType1, parameterType2, ...) = ^returnType(argument1, argument2, ...) {...};
float (^square)(float) = ^(float x) {return x*x;};
square(5); // resolves to 25
square(-7); // resolves to 49
Here's an example with no return and no parameters:
NSMutableDictionary *localStatus;
void (^logStatus)() = ^(void){ [MYUniversalLogger logCurrentStatus:localStatus]};
// Insert some code to add useful status information
// to localStatus dictionary
logStatus(); // this will call the block with the current localStatus
