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

[Herbert Valerio Riedel]

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?