| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Data.Time.Calendar.Jalaali
Description
Functions for working with Jalaali calendar systems. This library mimics the API of Data.Time.Calendar.Gregorian.
Synopsis
- isJalaaliLeapYear :: Integer -> Bool
- toJalaali :: Day -> (Integer, Int, Int)
- fromJalaali :: Integer -> Int -> Int -> Day
- fromJalaaliValid :: Integer -> Int -> Int -> Maybe Day
- jalaaliMonthLength :: Integer -> Int -> Int
- showJalaali :: Day -> String
- addJalaaliMonthsClip :: Integer -> Day -> Day
- addJalaaliMonthsRollOver :: Integer -> Day -> Day
- addJalaaliYearsClip :: Integer -> Day -> Day
- addJalaaliYearsRollOver :: Integer -> Day -> Day
- addJalaaliDurationClip :: CalendarDiffDays -> Day -> Day
- addJalaaliDurationRollOver :: CalendarDiffDays -> Day -> Day
Documentation
isJalaaliLeapYear :: Integer -> Bool Source #
Is this year a leap year according to the Jalaali calendar?
toJalaali :: Day -> (Integer, Int, Int) Source #
Convert to Jalaali calendar. First element of result is year, second month number (1-12), third day (1-31).
fromJalaali :: Integer -> Int -> Int -> Day Source #
Convert from Jalaali 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.
fromJalaaliValid :: Integer -> Int -> Int -> Maybe Day Source #
Convert from Jalaali calendar. First argument is year, second month number (1-12), third day (1-31). Invalid values will return Nothing.
jalaaliMonthLength :: Integer -> Int -> Int Source #
The number of days in a given month according to the Jalaali calendar. First argument is year, second is month.
showJalaali :: Day -> String Source #
Show in slash-separated format (yyyymmdd).
addJalaaliMonthsClip :: Integer -> Day -> Day Source #
Add months, with days past the last day of the month clipped to the last day. For instance, 14000531 + 7 months = 14001229.
addJalaaliMonthsRollOver :: Integer -> Day -> Day Source #
Add months, with days past the last day of the month rolling over to the next month. For instance, 14000531 + 7 months = 14010102.
addJalaaliYearsClip :: Integer -> Day -> Day Source #
Add years, matching month and day, with Esfand 30th clipped to Esfand 29th if necessary. For instance, 13991230 + 1 year = 14001229.
addJalaaliYearsRollOver :: Integer -> Day -> Day Source #
Add years, matching month and day, with Esfand 30th rolled over to Farvardin 1st if necessary. For instance, 13991230 + 1 year = 14010101.
addJalaaliDurationClip :: CalendarDiffDays -> Day -> Day Source #
Add months (clipped to last day), then add days.
addJalaaliDurationRollOver :: CalendarDiffDays -> Day -> Day Source #
Add months (rolling over to next month), then add days.