打印BOOL
NSLog(@"%@",flag == YES ? @"YES" : @"NO");
≈
≈≈≈
強(qiáng)轉(zhuǎn)
NSHTTPURLResponse *httpRes = (NSHTTPURLResponse *)response
??
?
?
宏定義
/**
* 語法: #define 宏名 (變量值)
* 編譯器是使用完全替換的語法來解析
*/
#define hasLaunch (@"hasLaunch")
áá
∏∏
__weak typeof(self) weakSelf = self;
