DDC compiler and effects; better than Haskell? (was Re: [Haskell-cafe] unsafeDestructiveAssign?)

[Dan Doel]

On Wednesday 12 August 2009 11:46:29 pm Ben Lippmeier wrote:
> Dan Doel wrote:
> > Off hand, I'd say I don't write foo and fooM versions of functions much
> > in actual programs, either. Such duplication goes into libraries...
>
> It would be ok if the duplication /was/ actually in the libraries,
> but often it's not.
>
> Note the lack of Data.Map.mapM and Data.Map.foldM. Want to apply a monadic
> computation to all the elements of a Data.Map? Convert it to a list and
> back..

Or use Data.Traversable.mapM and Data.Foldable.foldM.