An Elm language package for working with dates and times. ---
Only major (and recent) changes are listed here.
floorfor Floats for dates called
floorfor reducing date fields below a given date field granularity to its minimum value.
import Date.Extra.Config.Config_en_au exposing (config) import Date.Extra.Format as Format exposing (format, formatUtc, isoMsecOffsetFormat) displayString1 = Result.withDefault "Failed to get a date." <| Result.map (format config config.format.dateTime) (Date.fromString "2015-06-01 12:45:14.211Z") displayString2 = Result.withDefault "Failed to get a date." <| Result.map (formatUtc config isoMsecOffsetFormat) (Date.fromString "2015-06-01 12:45:14.211Z")
Please be warned that there are many ways to manipulate dates that produce basically incorrect results. This library does not yet have much in the way of prevention of doing the wrong thing. Dates, times, timezones and offsets can make working with dates a challenge. This library is quite new and even though it has tests and written in Elm it might eat your lunch if you are not careful.
It is hoped that with feedback from users and reviewers with deep Type-zen it will be possible to improve the API to reduce the chances of doing the wrong thing with out realising it.
This library is new and knowing what can or should be done with Elm types is very much a learning process for me and I suspect many people. It is quite likely the API may change quite a bit, so version numbers may climb rapidly.
I think there may be value in creating Types for each type of date. Types as covered in the Noda Time documentation such as
This library has a simple Period and Duration modules at the moment, I hope this is a step in the right direction and does not muddy the water.
In the long run this may require writing a date parser and introducing Elm native time zone structures in.
Many ideas and concepts shamelessly borrowed from the following.