On 05-Dec-2003, Christian Maeder <[EMAIL PROTECTED]> wrote:
> >instance Show a => Show (List a) where
> >showsPrec _ Nil = showString "[]"
> >showsPrec _ l =
> >showString "[" . showsl l . showString "]"
> >where -- showsl :: List a -> ShowS-- for ghc
> > -
I've just noticed that I used ghc with -fglasgow-exts.
Without extensions hugs, ghc und nhc98 consistently need the constraint
in the type signature (below)
showsl :: Show a => List a -> ShowS
Switching the extensions on, breaks this code, however (ghc only).
Christian
I wrote:
Hi,
if I tr
Hi,
if I try to supply a signatur for the local function "showsl" below,
then ghc rejects a constraint (Show a) whereas hugs (and nhc98) needs
this constraint.
What should be the correct notation? (apart from omitting any signature)
Cheers Christian
(BTW, I would appreciate if the (instantiat
