摘要: NSLog(@"%@",[NSStringstringWithFormat:@"%@",nil]); NSArray* array = [NSArrayarrayWithObjects:[NSNullnull],[NSStringstringWithFormat:@"%@",nil], nil]; NSObject* o1 = [array objectAtIndex:0]; NSObject* o2 = [array objectAtIndex:1]; BOOL inull = (NSNull*)responsibility == 阅读全文
posted @ 2013-03-08 10:59 zander 阅读(241) 评论(0) 推荐(0)