[Haskell-beginners] Intervals?

[Edward Z. Yang]

Excerpts from nathanmholden's message of Tue May 19 15:07:26 -0400 2009:
> Yeah, it would. But I always write code like that, it feels ungainly...
> writing super-long, case-by-case instance declarations (So that I can add in
> one little caveat at the end, or something), and stuff. Makes me feel like I
> must be dumb!

It seems to me, in this particular case, that you don't actually want an
algebraic datatype (which seems to be what you're implementation is using).

Cheers,
Edward