| Safe Haskell | Safe |
|---|---|
| Language | Haskell2010 |
Data.Time.Calendar
Synopsis
- newtype Day = ModifiedJulianDay {}
- addDays :: Integer -> Day -> Day
- diffDays :: Day -> Day -> Integer
- calendarDay :: CalendarDiffDays
- calendarMonth :: CalendarDiffDays
- calendarWeek :: CalendarDiffDays
- calendarYear :: CalendarDiffDays
- scaleCalendarDiffDays :: Integer -> CalendarDiffDays -> CalendarDiffDays
- data CalendarDiffDays = CalendarDiffDays {}
- type Year = Integer
- type MonthOfYear = Int
- type DayOfMonth = Int
- toGregorian :: Day -> (Year, MonthOfYear, DayOfMonth)
- fromGregorian :: Year -> MonthOfYear -> DayOfMonth -> Day
- pattern YearMonthDay :: Year -> MonthOfYear -> DayOfMonth -> Day
- fromGregorianValid :: Year -> MonthOfYear -> DayOfMonth -> Maybe Day
- showGregorian :: Day -> String
- gregorianMonthLength :: Year -> MonthOfYear -> DayOfMonth
- addGregorianMonthsClip :: Integer -> Day -> Day
- addGregorianMonthsRollOver :: Integer -> Day -> Day
- addGregorianYearsClip :: Integer -> Day -> Day
- addGregorianYearsRollOver :: Integer -> Day -> Day
- addGregorianDurationClip :: CalendarDiffDays -> Day -> Day
- addGregorianDurationRollOver :: CalendarDiffDays -> Day -> Day
- diffGregorianDurationClip :: Day -> Day -> CalendarDiffDays
- diffGregorianDurationRollOver :: Day -> Day -> CalendarDiffDays
- isLeapYear :: Year -> Bool
- data DayOfWeek
- dayOfWeek :: Day -> DayOfWeek
- dayOfWeekDiff :: DayOfWeek -> DayOfWeek -> Int
- firstDayOfWeekOnAfter :: DayOfWeek -> Day -> Day
Days
The Modified Julian Day is a standard count of days, with zero being the day 1858-11-17.
Constructors
| ModifiedJulianDay | |
Fields | |
Instances
| Data Day # | |
Defined in Data.Time.Calendar.Days Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Day -> c Day Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Day Source # toConstr :: Day -> Constr Source # dataTypeOf :: Day -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Day) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Day) Source # gmapT :: (forall b. Data b => b -> b) -> Day -> Day Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Day -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Day -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Day -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Day -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Day -> m Day Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Day -> m Day Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Day -> m Day Source # | |
| Enum Day # | |
Defined in Data.Time.Calendar.Days | |
| Ix Day # | |
| Read Day # | |
| Show Day # | |
| NFData Day # | |
Defined in Data.Time.Calendar.Days | |
| Eq Day # | |
| Ord Day # | |
| FormatTime Day # | |
Defined in Data.Time.Format.Format.Instances | |
| ISO8601 Day # |
|
Defined in Data.Time.Format.ISO8601 Methods | |
| ParseTime Day # | |
Defined in Data.Time.Format.Parse.Instances | |
Calendar Duration
scaleCalendarDiffDays :: Integer -> CalendarDiffDays -> CalendarDiffDays Source #
Scale by a factor. Note that scaleCalendarDiffDays (-1) will not perfectly invert a duration, due to variable month lengths.
data CalendarDiffDays Source #
Constructors
| CalendarDiffDays | |
Instances
Year, month and day
type MonthOfYear = Int Source #
Month of year, in range 1 (January) to 12 (December).
type DayOfMonth = Int Source #
Day of month, in range 1 to 31.
Gregorian calendar
toGregorian :: Day -> (Year, MonthOfYear, DayOfMonth) Source #
Convert to proleptic Gregorian calendar.
fromGregorian :: Year -> MonthOfYear -> DayOfMonth -> Day Source #
Convert from proleptic Gregorian calendar. Invalid values will be clipped to the correct range, month first, then day.
pattern YearMonthDay :: Year -> MonthOfYear -> DayOfMonth -> Day Source #
Bidirectional abstract constructor for the proleptic Gregorian calendar. Invalid values will be clipped to the correct range, month first, then day.
fromGregorianValid :: Year -> MonthOfYear -> DayOfMonth -> Maybe Day Source #
Convert from proleptic Gregorian calendar. Invalid values will return Nothing
showGregorian :: Day -> String Source #
Show in ISO 8601 format (yyyy-mm-dd)
gregorianMonthLength :: Year -> MonthOfYear -> DayOfMonth Source #
The number of days in a given month according to the proleptic Gregorian calendar.
addGregorianMonthsClip :: Integer -> Day -> Day Source #
Add months, with days past the last day of the month clipped to the last day. For instance, 2005-01-30 + 1 month = 2005-02-28.
addGregorianMonthsRollOver :: Integer -> Day -> Day Source #
Add months, with days past the last day of the month rolling over to the next month. For instance, 2005-01-30 + 1 month = 2005-03-02.
addGregorianYearsClip :: Integer -> Day -> Day Source #
Add years, matching month and day, with Feb 29th clipped to Feb 28th if necessary. For instance, 2004-02-29 + 2 years = 2006-02-28.
addGregorianYearsRollOver :: Integer -> Day -> Day Source #
Add years, matching month and day, with Feb 29th rolled over to Mar 1st if necessary. For instance, 2004-02-29 + 2 years = 2006-03-01.
addGregorianDurationClip :: CalendarDiffDays -> Day -> Day Source #
Add months (clipped to last day), then add days
addGregorianDurationRollOver :: CalendarDiffDays -> Day -> Day Source #
Add months (rolling over to next month), then add days
diffGregorianDurationClip :: Day -> Day -> CalendarDiffDays Source #
Calendrical difference, with as many whole months as possible
diffGregorianDurationRollOver :: Day -> Day -> CalendarDiffDays Source #
Calendrical difference, with as many whole months as possible.
Same as diffGregorianDurationClip for positive durations.
isLeapYear :: Year -> Bool Source #
Is this year a leap year according to the proleptic Gregorian calendar?