[Haskell-cafe] Equations for `foo' have different numbers of arguments

24 Mar 2009

      Hi.

There is a limitation, in Haskell, that I'm not sure to understand.
Here is an example:

module Main where

divide :: Float -> Float -> Float
divide _ 0 = error "division by 0"
divide = (/)

main = do
   print $ divide 1.0 0.0
   print $ divide 4.0 2.0

With GHC I get:
Equations for `divide' have different numbers of arguments

With HUGS:
Equations give different arities for "divide"

However the two equations really have the same number of arguments.

What's the problem?

Thanks  Manlio Perillo