On Tue, Apr 16, 2013 at 01:53:19PM +0100, Oliver Charles wrote: > On 04/16/2013 01:47 PM, Lyndon Maydwell wrote: > >You could do: > > > >runKleisli . mconcat . map Kleisli :: Monoid (Kleisli m a b) => [a > >-> m b] -> a -> m b > > > >Would that work for you? > I can't find an instance for Monoid (Kleisli m a b) in `base`, so > presumably the author would also have to write this instance? If so > - would that really be any different to using that fold?
It doesn't make sense anyway. It would have to be "Kleisli m a a" which would presumably require a newtype. Tom _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
