Kevin Atkinson wrote:
>
> Is this legal Haskell 98 Code:
>
> module Test where
>
> class A a where
> foo :: a -> a
>
> class (A a) => B a where
> boo :: a -> a
>
> foo a = a
>
> GHC compiles it just fine but the latest vesion of Hugs98 gives me
> ERROR "test.hs" (line 10): No member "foo" in class "B"
After trying to make instances of this in GHC I realized that it also
doesn't work in GHC. I guess it just ignored it.
Anyway I will still like to know if there are any plans on supporting
something like this and if there are any known workarounds.
>
> So I was wondering if giving default definitions for base member in a
> derived class is legal is Haskell 98. If it is not legal is it a
> proposed extension that Hugs will eventually support?
--
Kevin Atkinson
[EMAIL PROTECTED]
http://metalab.unc.edu/kevina/
