Haskell's typeclasses are still a few hacks away from perfection :-) See the last part of this document: http://www.haskell.org/tutorial/numbers.html http://www

Haskell's typeclasses are still a few hacks away from perfection :-) See the last part of this document: http://www.haskell.org/tutorial/numbers.html http://www.haskell.org/tutorial/numbers.html