On Sun, Jan 9, 2011 at 7:45 AM, Sebastian Fischer <fisc...@nii.ac.jp> wrote: > [...] > Only conversion to the underlying Set type requires an Ord constraint. > getSet :: Ord a => Set a -> S.Set a > getSet a = a >>- S.singleton
this unfortunately also means that duplicated elements only get filtered out at the points where you use getSet, so in "getSet ((return 1 `mplus` return 1) >>= k)" k gets still called twice _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
