gistfile1.txt

#define BLOCK(name, return, ...) return(^name)(__VA_ARGS__)
#define BLOCKTYPE(return, ...) return(^)(__VA_ARGS__)

// Example Usage:

// To declare a block inside a function/method:
//
// BLOCK(foo, int, BOOL) = ^(BOOL bar) { return bar ? 4 : 3; }
//
// NSLog(@"%d", foo(NO)); // "3"

// To write a method that returns one kind of block (which returns a NSDictionary*, and takes an NSArray* and a float) and takes 
// another block (which returns an NSString* and takes an int and a bool) and  you would write:
//
// -(BLOCKTYPE(NSDictionary*, NSArray*, float)) myMethodWithBlock:(BLOCKTYPE(NSString*, int, bool))myBlock
//
// Obviously that's a mess, and highly unlikely, but it's an example