6 Jun
2011
6 Jun
'11
7:52 a.m.
On Mon, Jun 6, 2011 at 7:52 AM, Yitzchak Gale
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