Fumiaki Kinoshita fumiexcel at
Tue Mar 31 03:33:30 UTC 2015

Well, I see. It'd be nice.

That aside, the absence of traverse_ doesn't seem to be intended (even the
documentation for mapM_ says "mapM_ is just traverse_"!)

2015-03-30 16:54 GMT+09:00 Herbert Valerio Riedel <hvr at>:

> On 2015-03-30 at 07:05:56 +0200, Fumiaki Kinoshita wrote:
> [...]
> > I found out that (<>) (in Data.Monoid) is missing, also. It would be nice
> > to reexamine Prelude to export things we want to export.
> Fwiw, (<>) was actually left-out as it wasn't required (it's just a an
> alias for `mappend`), *and* to keep our options open (or at least not
> make it more difficult) in terms of possible migration-plans available
> for the case we'd be moving 'Semigroup' to base/Prelude at some point in
> the future.
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