[jhc] Classes

[Samuel Bronson]

On 3/10/08, John Meacham <john at repetae.net> wrote:
> On Mon, Mar 10, 2008 at 01:50:09PM -0400, Samuel Bronson wrote:
> > On 3/10/08, John Meacham <john at repetae.net> wrote:
> > > instance Foo Char where
> > >        foo c = ord c
> > >
> > > produces the following core
> > >
> > > Instance at .Main.Foo.foo.Prelude.Char :: Char -> Int
> > > Instance at .Main.Foo.foo.Prelude.Char c = ord c
> > >
> > > {-# RULES "foo/char/instance"  Main.foo Char = Instance at .Main.Foo.foo.Prelude.Char #-}
> >
> > Hmm. What should I name default implementations?
>
> Those are named 'Instance at .Main.Foo.foo.default' and have the type
> 'forall a . a -> Int' . A default method
> always exists, even if it is just an error saying no default method was
> supplied. RULES are generated for the default methods as well in the
> same fashion.

Well, I meant the additional default methods offered by class
aliasses... and what can I do to keep track of what the proper method
name is so I can generate the RULES later...