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

[Keean Schupke]

I think someone else mentioned using functions earlier,
rather than a datatype why not define:
   data Interval = Interval { isin :: Float -> Bool }
Then each range becomes a function definition, for example:
   myInterval = Interval {
      isin r
         | r == 0.6 = True
         | r > 0.7 && r < 1.0 = True
         | otherwise = False
      }
Then you can test with:
   (isin myInterval 0.6)
Keean
  


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