[EMAIL PROTECTED] wrote:
> One thing that hasn't come up yet is that empty instance declarations
> are the only decent option (that I know of) that we have in the
> absence of real class aliases.
It does seem to me that compilers could reasonably distinguish between
incomplete definition:
> > class (Monad m, Ord t) => ReVars m t where { }
> > instance (Monad m, Ord t) => ReVars m t where { }
and intentionally incomplete definition:
class (Monad m, Ord t) => ReVars m t
instance (Monad m, Ord t) => ReVars m t
Both syntaxes (with and without the 'where') are currently legal, but
the latter is more obviously deliberate (at least to this human reader).
Regards,
Malcolm
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