[Haskell-cafe] Set of reals...?

Keith Wansbrough Keith.Wansbrough at cl.cam.ac.uk
Fri Oct 29 08:42:15 EDT 2004

> >Keith Wansbrough wrote:
> >>Which brings me to a question: is there a better way to write -inf and
> >>+inf in Haskell than "-1/0" and "1/0"?
> Why not do it with types:
> 	data InfDbl = Dbl Double | PositiveInfinity | NegativeInfinity


Double already has +Inf and -Inf; it's just that Haskell doesn't have 
(AFAIK) syntax to write them as constants.

--KW 8-)
Keith Wansbrough <kw217 at cl.cam.ac.uk>
University of Cambridge Computer Laboratory.

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