[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 _______________________________________________ Haskell mailing list Haskell@haskell.org http://www.haskell.org/mailman/listinfo/haskell