[containers] Proposal: Change to the Data.Map Monoid

[Edward Kmett]

There is always the option of folding Default into base, resolving concerns
about where you get instances for it and the ensuing package explosion once
and for all.

-Edward


On Wed, May 21, 2014 at 11:12 AM, João Cristóvão <jmacristovao at gmail.com>wrote:

> Sorry for continuing the off-topic, and for promoting a package of mine:
>
> If you only need the class definition,
> http://hackage.haskell.org/package/data-default-class is a better choice,
> with no dependencies.
>
> If you prefer a single package with all the dependencies (and with
> additional generics support), my own fork might be useful:
> http://hackage.haskell.org/package/data-default-generics
>
> Although I mirrored the original package dependencies, many of which might
> actually be unnecessary... (given the generics implementation).
>
> Cheers
>
>
> 2014-05-21 15:59 GMT+01:00 Michael Snoyman <michael at snoyman.com>:
>
> At the risk of veering terribly off-topic... the splitting of data-default
>> into all of those packages caused me a bunch of dependency headaches, most
>> of which I still don't fully comprehend. I miss the good ol' days of a
>> single package.
>>
>>
>> On Wed, May 21, 2014 at 5:53 PM, Edward Kmett <ekmett at gmail.com> wrote:
>>
>>> I find myself rather hesitant to recommend that instantiation of the
>>> idea ever since it exploded into a half-dozen packages full of orphan
>>> instances, but yes.
>>>
>>> -Edward
>>>
>>>
>>> On Wed, May 21, 2014 at 6:38 AM, Herbert Valerio Riedel <hvr at gnu.org>wrote:
>>>
>>>> On 2014-05-21 at 00:23:44 +0200, Andreas Abel wrote:
>>>> >>> _Lots_ of users initialize empty maps with mempty
>>>> >
>>>> > Well, this is another issue, empty should be overloaded via
>>>> >
>>>> > class Empty a where
>>>> >   empty :: a
>>>>
>>>> Btw, isn't this what
>>>>
>>>>   http://hackage.haskell.org/package/data-default
>>>>
>>>> provides?
>>>> _______________________________________________
>>>> Libraries mailing list
>>>> Libraries at haskell.org
>>>> http://www.haskell.org/mailman/listinfo/libraries
>>>>
>>>
>>>
>>> _______________________________________________
>>> Libraries mailing list
>>> Libraries at haskell.org
>>> http://www.haskell.org/mailman/listinfo/libraries
>>>
>>>
>>
>> _______________________________________________
>> Libraries mailing list
>> Libraries at haskell.org
>> http://www.haskell.org/mailman/listinfo/libraries
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.haskell.org/pipermail/libraries/attachments/20140521/9793afc7/attachment-0001.html>