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Expose useful helpers #23

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Expose useful helpers
cmditch Jun 13, 2020
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cmditch Jun 13, 2020
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2 changes: 1 addition & 1 deletion elm.json
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
"name": "justinmimbs/date",
"summary": "Work with dates without times or zones",
"license": "BSD-3-Clause",
"version": "3.2.1",
"version": "3.3.0",
"exposed-modules": [
"Date"
],
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20 changes: 17 additions & 3 deletions src/Date.elm
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Expand Up @@ -10,7 +10,7 @@ module Date exposing
, Interval(..), ceiling, floor
, range
, compare, isBetween, min, max, clamp
, monthToNumber, numberToMonth, weekdayToNumber, numberToWeekday
, monthToNumber, numberToMonth, daysInMonth, weekdayToNumber, numberToWeekday, isLeapYear
)

{-|
Expand Down Expand Up @@ -65,9 +65,9 @@ module Date exposing
@docs compare, isBetween, min, max, clamp


# Month and Weekday helpers
# Month, Year, and Weekday helpers

@docs monthToNumber, numberToMonth, weekdayToNumber, numberToWeekday
@docs monthToNumber, numberToMonth, daysInMonth, weekdayToNumber, numberToWeekday, isLeapYear

-}

Expand Down Expand Up @@ -153,6 +153,13 @@ toRataDie (RD rd) =
-- CALCULATIONS


{-| See if a given year has 366 days (29th of Februrary).

isLeapYear 2019 == False

isLeapYear 2020 == True

-}
isLeapYear : Int -> Bool
isLeapYear y =
modBy 4 y == 0 && modBy 100 y /= 0 || modBy 400 y == 0
Expand Down Expand Up @@ -1466,6 +1473,13 @@ clamp ((RD a) as dateA) ((RD b) as dateB) ((RD x) as dateX) =
-- NUMBERS OF DAYS


{-| Return the number of days in the month, accounting for leap years.

daysInMonth 2019 Feb == 28

daysInMonth 2020 Feb == 29

-}
daysInMonth : Int -> Month -> Int
daysInMonth y m =
case m of
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