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下面你将看到一些关于Objective-C 宏定义的收集，你也可以把你收集的给我（谢谢你！）

// 度数 转为 弧度#define degreesToRadians(x) (M_PI * x / 180.0)// 使定时器失效#define UA_invalidateTimer(t) [t invalidate]; t = nil;// 设备信息#define UA_isIPad   (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)#define UA_isIPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)#define UA_isRetinaDevice ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] && [[UIScreen mainScreen] scale] >= 2)#define UA_isMultiTaskingSupported ([[UIDevice currentDevice] respondsToSelector:@selector(isMultitaskingSupported)] && [[UIDevice currentDevice] isMultitaskingSupported])// 线程#define UA_runOnMainThread if (![NSThread isMainThread]) { dispatch_sync(dispatch_get_main_queue(), ^{ [self performSelector:_cmd]; }); return; };// 颜色#define UA_rgba(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]#define UA_rgb(r,g,b) UA_rgba(r, g, b, 1.0f)// 调试和日志#ifdef DEBUG<  #define UA_log( s, ... ) NSLog( @"<%@:%d> %@", [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__,  [NSString stringWithFormat:(s), ##__VA_ARGS__] )#else  #define UA_log( s, ... )#endif#define UA_logBounds(view) UA_log(@"%@ bounds: %@", view, NSStringFromRect([view bounds]))#define UA_logFrame(view)  UA_log(@"%@ frame: %@", view, NSStringFromRect([view frame]))// 其它的#define NSStringFromBool(b) (b ? @"YES" : @"NO")#define UA_SHOW_VIEW_BORDERS YES#define UA_showDebugBorderForViewColor(view, color) if (UA_SHOW_VIEW_BORDERS) { view.layer.borderColor = color.CGColor; view.layer.borderWidth = 1.0; }#define UA_showDebugBorderForView(view) UA_showDebugBorderForViewColor(view, [UIColor colorWithWhite:0.0 alpha:0.25])