time-1.8.0.2: A time library

Safe HaskellSafe
LanguageHaskell2010

Data.Time.Calendar

Contents

Synopsis

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 Source # 
Instance details

Defined in Data.Time.Calendar.Days

Eq Day Source # 
Instance details

Defined in Data.Time.Calendar.Days

Methods

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

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

Data Day Source # 
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 Source # 
Instance details

Defined in Data.Time.Calendar.Days

Methods

compare :: Day -> Day -> Ordering Source #

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

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

(>) :: Day -> Day -> Bool Source #

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

max :: Day -> Day -> Day Source #

min :: Day -> Day -> Day Source #

Read Day Source # 
Instance details

Defined in Data.Time.Format.Parse

Show Day Source # 
Instance details

Defined in Data.Time.Calendar.Gregorian

Ix Day Source # 
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 Source # 
Instance details

Defined in Data.Time.Calendar.Days

Methods

rnf :: Day -> () Source #

ParseTime Day Source # 
Instance details

Defined in Data.Time.Format.Parse

FormatTime Day Source # 
Instance details

Defined in Data.Time.Format

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?