Others have pointed out your first bug. To get floating-point numeric literals you will need to define instances of Num and then Fractional for your symbolic type.
On 19 August 2011 21:40, Paul Reiners <paul.rein...@gmail.com> wrote: > *Main> let pi = 3.14 :: MathExpression > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
