On Mon, Jun 6, 2011 at 7:52 AM, Yitzchak Gale <[email protected]> wrote: > You almost never want to use UndecidableInstances > when writing practical programs in Haskell.
Surprisingly enough, mtl uses UndecidableInstances, so almost every practical Haskell program uses it in one way or another. G -- Gregory Collins <[email protected]> _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
