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/Haskell 8

Data.Time.Calendar

Safe Haskell Safe
Language Haskell2010

Days

newtype Day Source

The Modified Julian Day is a standard count of days, with zero being the day 1858-11-17.

Instances
Enum Day
Instance details

Defined in Data.Time.Calendar.Days

Eq Day
Instance details

Defined in Data.Time.Calendar.Days

Methods

(==) :: Day -> Day -> Bool

(/=) :: Day -> Day -> Bool

Data Day
Instance details

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 :: (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

Ord Day
Instance details

Defined in Data.Time.Calendar.Days

Methods

compare :: Day -> Day -> Ordering

(<) :: Day -> Day -> Bool

(<=) :: Day -> Day -> Bool

(>) :: Day -> Day -> Bool

(>=) :: Day -> Day -> Bool

max :: Day -> Day -> Day

min :: Day -> Day -> Day

Read Day
Instance details

Defined in Data.Time.Format.Parse

Show Day
Instance details

Defined in Data.Time.Calendar.Gregorian

Methods

showsPrec :: Int -> Day -> ShowS Source

show :: Day -> String Source

showList :: [Day] -> ShowS Source

Ix Day
Instance details

Defined in Data.Time.Calendar.Days

Methods

range :: (Day, Day) -> [Day] Source

index :: (Day, Day) -> Day -> Int Source

unsafeIndex :: (Day, Day) -> Day -> Int

inRange :: (Day, Day) -> Day -> Bool Source

rangeSize :: (Day, Day) -> Int Source

unsafeRangeSize :: (Day, Day) -> Int

NFData Day
Instance details

Defined in Data.Time.Calendar.Days

Methods

rnf :: Day -> () Source

ParseTime Day
Instance details

Defined in Data.Time.Format.Parse

Methods

buildTime :: TimeLocale -> [(Char, String)] -> Maybe Day Source

FormatTime Day
Instance details

Defined in Data.Time.Format

addDays :: Integer -> Day -> Day Source

diffDays :: Day -> Day -> Integer Source

Gregorian calendar

toGregorian :: Day -> (Integer, Int, Int) Source

Convert to proleptic Gregorian calendar. First element of result is year, second month number (1-12), third day (1-31).

fromGregorian :: Integer -> Int -> Int -> Day Source

Convert from proleptic Gregorian calendar. First argument is year, second month number (1-12), third day (1-31). Invalid values will be clipped to the correct range, month first, then day.

fromGregorianValid :: Integer -> Int -> Int -> Maybe Day Source

Convert from proleptic Gregorian calendar. First argument is year, second month number (1-12), third day (1-31). Invalid values will return Nothing

showGregorian :: Day -> String Source

Show in ISO 8601 format (yyyy-mm-dd)

gregorianMonthLength :: Integer -> Int -> Int Source

The number of days in a given month according to the proleptic Gregorian calendar. First argument is year, second is month.

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.

isLeapYear :: Integer -> Bool Source

Is this year a leap year according to the proleptic Gregorian calendar?

© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/8.6.1/docs/html/libraries/time-1.8.0.2/Data-Time-Calendar.html