重写 NSLog

• 重写NSLog

#if DEBUG
#define NSLog(format, ...) do {                                             \
fprintf(stderr, "<%s : %d> %s\n",                                           \
[[[NSString stringWithUTF8String:__FILE__] lastPathComponent]   UTF8String],  \
__LINE__, __func__);                                                        \
(NSLog)((format), ##__VA_ARGS__);                                           \
fprintf(stderr, "-------\n");                                               \
} while (0)
#else
#define NSLog(FORMAT, ...) nil
#endif

使用上述宏，需要build settings的macro中DEBUG设置正确。

• 常用输出：

#define NSLogRect(rect) NSLog(@"%s x:%.4f, y:%.4f, w:%.4f, h:%.4f",       #rect, rect.origin.x, rect.origin.y, rect.size.width, rect.size.height)
#define NSLogSize(size) NSLog(@"%s w:%.4f, h:%.4f", #size, size.width, size.height)
#define NSLogPoint(point) NSLog(@"%s x:%.4f, y:%.4f", #point, point.x, point.y)