CBHDateKit
CBHDateKit builds on the existing NSDate API adding a number of comfort features including relative date creation, numerous common checks, and convenient methods for decomposing dates. Additionally the NSDateFormatter API is extended to provide convenient factories as well as some pre-built factories for RFC 822 and RFC 3339.
NSDate
#pragma mark - Shared Calendar
+ (NSCalendar *)sharedCalendar;
#pragma mark - Relative Dates
+ (instancetype)dateTomorrow;
+ (instancetype)dateYesterday;
+ (instancetype)dateWithMinutesFromNow:(NSInteger)minutes;
+ (instancetype)dateWithMinutesBeforeNow:(NSInteger)minutes;
+ (instancetype)dateWithHoursFromNow:(NSInteger)hours;
+ (instancetype)dateWithHoursBeforeNow:(NSInteger)hours;
+ (instancetype)dateWithDaysFromNow:(NSInteger)days;
+ (instancetype)dateWithDaysBeforeNow:(NSInteger)days;
#pragma mark - Comparing Dates
- (BOOL)isEqualToDateIgnoringTime:(NSDate *)date;
- (BOOL)isEqualToDateIgnoringNanoSeconds:(NSDate *)date;
- (BOOL)isSameDayAsDate:(NSDate *)date;
@property (nonatomic, readonly) BOOL isToday;
@property (nonatomic, readonly) BOOL isTomorrow;
@property (nonatomic, readonly) BOOL isYesterday;
- (BOOL)isSameWeekAsDate:(NSDate *)date;
@property (nonatomic, readonly) BOOL isThisWeek;
@property (nonatomic, readonly) BOOL isNextWeek;
@property (nonatomic, readonly) BOOL isLastWeek;
- (BOOL)isSameMonthAsDate:(NSDate *)date;
@property (nonatomic, readonly) BOOL isThisMonth;
- (BOOL)isSameYearAsDate:(NSDate *)date;
@property (nonatomic, readonly) BOOL isThisYear;
@property (nonatomic, readonly) BOOL isNextYear;
@property (nonatomic, readonly) BOOL isLastYear;
- (BOOL)isEarlierThanDate:(NSDate *)date;
- (BOOL)isLaterThanDate:(NSDate *)date;
@property (nonatomic, readonly) BOOL isInTheFuture;
@property (nonatomic, readonly) BOOL isInThePast;
#pragma mark - Date Roles
@property (nonatomic, readonly) BOOL isWorkday;
@property (nonatomic, readonly) BOOL isWeekend;
#pragma mark - Adjusting Dates
- (NSDate *)dateByAddingMinutes:(NSInteger)minutes;
- (NSDate *)dateBySubtractingMinutes:(NSInteger)minutes;
- (NSDate *)dateByAddingHours:(NSInteger)hours;
- (NSDate *)dateBySubtractingHours:(NSInteger)hours;
- (NSDate *)dateByAddingDays:(NSInteger)days;
- (NSDate *)dateBySubtractingDays:(NSInteger)days;
@property (nonatomic, readonly) NSDate *dateAtStartOfDay;
#pragma mark - Intervals
- (NSInteger)secondsAfterDate:(NSDate *)date;
- (NSInteger)secondsBeforeDate:(NSDate *)date;
- (NSInteger)minutesAfterDate:(NSDate *)date;
- (NSInteger)minutesBeforeDate:(NSDate *)date;
- (NSInteger)hoursAfterDate:(NSDate *)date;
- (NSInteger)hoursBeforeDate:(NSDate *)date;
- (NSInteger)daysAfterDate:(NSDate *)date;
- (NSInteger)daysBeforeDate:(NSDate *)date;
- (NSInteger)yearsAfterDate:(NSDate *)date;
- (NSInteger)yearsBeforeDate:(NSDate *)date;
#pragma mark - Decomposing Dates
- (NSDateComponents *)components:(NSCalendarUnit)unitFlags;
- (NSDateComponents *)componentsSpanningDates:(NSDate *)date;
- (NSDateComponents *)components:(NSCalendarUnit)unitFlags spanningDates:(NSDate *)date;
@property (nonatomic, readonly) NSDateComponents *dateAndTimeComponents;
@property (nonatomic, readonly) NSDateComponents *timeComponents;
@property (nonatomic, readonly) NSInteger nearestHour;
@property (nonatomic, readonly) NSInteger hour;
@property (nonatomic, readonly) NSInteger minute;
@property (nonatomic, readonly) NSInteger second;
@property (nonatomic, readonly) NSInteger nanosecond;
@property (nonatomic, readonly) NSInteger day;
@property (nonatomic, readonly) NSInteger weekday;
@property (nonatomic, readonly) NSInteger nthWeekday;
@property (nonatomic, readonly) NSInteger weekOfYear;
@property (nonatomic, readonly) NSInteger month;
@property (nonatomic, readonly) NSInteger year;NSDateFormatter
#pragma mark - Factories
+ (instancetype)formatterWithDateFormat:(NSString *)format;
+ (instancetype)formatterWithTimeStyle:(NSDateFormatterStyle)dateStyle;
+ (instancetype)formatterWithDateStyle:(NSDateFormatterStyle)dateStyle;
#pragma mark - RFC's
+ (instancetype)rfc822;
+ (instancetype)rfc3339;Prior Work
I believe this project was originally forked from NSDate-Extensions at some point in 2010 but I am not entirely sure of its origin. Since then I have substantially reworked, expanded, and improved the code and I believe they differ enough to be considered separate works. That being said I wanted to give @erica (Erica Sadun) credit as well as anyone else who may have inspired this project.
Licence
CBHDateKit is available under the ISC license.