Re: [Haskell-cafe] Phantoms

Henning Thielemann wrote:

...

instance on Foo a?

Btw. was anything bad about the suggested Haskell98 solution?

You called it 'non-hacky'; I would call it 'slightly hacky' since, IMO, it qualifies as a hack around a deficiency in the class system. However, I don't think there is anything wrong with it. After all it's the same trick the Prelude uses for instance Show [Char]. Jules