elm/libraries/Date.elm
2014-01-28 23:56:24 +01:00

76 lines
2.2 KiB
Elm

module Date where
{-| Library for working with dates. Email the mailing list if you encounter
issues with internationalization or locale formatting.
# Conversions
@docs read, toTime, fromTime
# Extractions
@docs year, month, Month, day, dayOfWeek, Day, hour, minute, second
-}
import Native.Date
import Time (Time)
import Maybe (Maybe)
data Date = Date
{-| Represents the days of the week. -}
data Day = Mon | Tue | Wed | Thu | Fri | Sat | Sun
{-| Represents the month of the year. -}
data Month = Jan | Feb | Mar | Apr
| May | Jun | Jul | Aug
| Sep | Oct | Nov | Dec
{-| Attempt to read a date from a string. -}
read : String -> Maybe Date
read = Native.Date.read
{-| Convert a date into a time since midnight (UTC) of 1 January 1990 (i.e.
[UNIX time](http://en.wikipedia.org/wiki/Unix_time)). Given the date 23 June
1990 at 11:45AM this returns the corresponding time. -}
toTime : Date -> Time
toTime = Native.Date.toTime
{-| Take a UNIX time and convert it to a `Date` -}
fromTime : Time -> Date
fromTime = Native.Date.fromTime
{-| Extract the year of a given date. Given the date 23 June 1990 at 11:45AM
this returns the integer `1990`. -}
year : Date -> Int
year = Native.Date.year
{-| Extract the month of a given date. Given the date 23 June 1990 at 11:45AM
this returns the Month `Jun` as defined below. -}
month : Date -> Month
month = Native.Date.month
{-| Extract the day of a given date. Given the date 23 June 1990 at 11:45AM
this returns the integer `23`. -}
day : Date -> Int
day = Native.Date.day
{-| Extract the day of the week for a given date. Given the date 23 June
1990 at 11:45AM this returns the Day `Thu` as defined below. -}
dayOfWeek : Date -> Day
dayOfWeek = Native.Date.dayOfWeek
{-| Extract the hour of a given date. Given the date 23 June 1990 at 11:45AM
this returns the integer `11`. -}
hour : Date -> Int
hour = Native.Date.hour
{-| Extract the minute of a given date. Given the date 23 June 1990 at 11:45AM
this returns the integer `45`. -}
minute : Date -> Int
minute = Native.Date.minute
{-| Extract the second of a given date. Given the date 23 June 1990 at 11:45AM
this returns the integer `0`. -}
second : Date -> Int
second = Native.Date.second