Sorting in Elixir is based on the structure so there is no way Enum.sort
can be made to work for DateTime. You need to give a sorter or an
operation, like Paul described, if you would like to change its behaviour.



*José Valim*
www.plataformatec.com.br
Skype: jv.ptec
Founder and Director of R&D

On Fri, Jan 20, 2017 at 1:03 PM, Josh Crews <[email protected]> wrote:

> Hi. I love Timex so much!
>
> Regarding work around... I guess?
>
> What do you think of the main thread question, "should Enum.sort work on
> Date types"?
>
> On Friday, January 20, 2017 at 1:42:20 PM UTC-6, Paul Schoenfelder wrote:
>>
>> Probably easier to use `Enum.sort_by(dates, &DateTime.to_unix/1)`, no?
>>
>> Paul
>>
>> On Fri, Jan 20, 2017 at 1:39 PM, Josh Crews <[email protected]> wrote:
>>
>>> Current behavior:
>>>
>>>
>>> iex(3)> [~D[2017-01-04], ~D[2017-04-03], ~D[2017-01-05]] |> Enum.sort
>>>
>>> [~D[2017-04-03], ~D[2017-01-04], ~D[2017-01-05]]
>>>
>>>
>>> Proposed:
>>>
>>> iex(3)> [~D[2017-01-04], ~D[2017-04-03], ~D[2017-01-05]] |> Enum.sort
>>>
>>> [~D[2017-01-04], ~D[2017-01-05], ~D[2017-04-03]]
>>>
>>>
>>> What I'm currently doing is:
>>>
>>> iex(4)> [~D[2017-01-04], ~D[2017-04-03], ~D[2017-01-05]] |>
>>> Enum.map(&(Date.to_erl/1)) |> Enum.sort |> Enum.map(&(Date.from_erl!/1))
>>>
>>> [~D[2017-01-04], ~D[2017-01-05], ~D[2017-04-03]]
>>>
>>>
>>> which is working great, but would be cool to have Enum.sort work on Date
>>> types too.
>>>
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