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@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?

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