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Created December 2, 2014 16:59
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objective C defining useful constants
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iOS
#define TimeZone [[NSTimeZone localTimeZone] name]
#define IS_IPHONE_6_PLUS ([[UIScreen mainScreen] respondsToSelector:@selector(nativeScale)] && [UIScreen mainScreen].nativeScale > 2.1)
#define IS_IPHONE_4 (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)480) < DBL_EPSILON)
#define IS_IPHONE_5 (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)568) < DBL_EPSILON)
#define IS_IPHONE_6 (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)667) < DBL_EPSILON)
#define IS_IPHONE5 (([[UIScreen mainScreen] bounds].size.height-568)?NO:YES)
#define IS_OS_5_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 5.0)
#define IS_OS_6_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 6.0)
#define IS_OS_7_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)
#define IS_OS_8_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
#define IS_IOS_6 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 6.0 && [[[UIDevice currentDevice] systemVersion] floatValue] < 7.0)
#define IS_IOS_7 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0 && [[[UIDevice currentDevice] systemVersion] floatValue] < 8.0)
#define IS_IOS_8 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0 && [[[UIDevice currentDevice] systemVersion] floatValue] < 9.0)
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