define.pch

1. nslog輸出與否

#ifdef DEBUG
#define XFLog(…) NSLog(VA_ARGS)
#else
#define XFLog(…)
#endif

2 .RGB顏色

define XFColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]

3 隨機色

define XFRandomColor XFColor(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))