OC技巧收集

NSLog

#ifdef DEBUG

#define NSLog(FORMAT, ...) fprintf(stderr, "\n\n******(class)%s(begin)******\n(SEL)%s\n(line)%zd\n(data)%s\n******(class)%s(end)******\n\n", [[[NSString stringWithUTF8String: __FILE__] lastPathComponent] UTF8String], __FUNCTION__, __LINE__, [[NSString stringWithFormat: FORMAT, ## __VA_ARGS__] UTF8String], [[[NSString stringWithUTF8String: __FILE__] lastPathComponent] UTF8String]);

#else

#define NSLog(FORMAT, ...) nil

#endif

ViewController的简单"瘦身"

奉上Demo