OC得Block语法使用
//// main.m// Block//// Created by Rayln Guan on 8/29/13.// Copyright (c) 2013 Rayln Guan. All rights reserved.//#import <Foundation/Foundation.h>typedef int (^MySum) (int, int);void test1(){ int (^Sum) (int, int) = ^(int a, int b){ return a + b; }; NSLog(@"%i", Sum(2, 3));}void test2(){ MySum sum = ^(int a, int b){ return a + b; }; NSLog(@"%i", sum(10, 2));}int main(int argc, const char * argv[]){ @autoreleasepool { test1(); test2(); } return 0;}