Natural numbers http://darcs.wolfgang.jeltsch.info/haskell/natural-numbers
|Latest on Hackage:||0.1.2.0|
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This package provides a type of all natural numbers, that is, non-negative integers.
In contrast to the
naturals package, it does not use an “indeterminate value” to
represent underflows, but raises errors on underflows. We think this is more
reasonable, as this “indeterminate value” is not really a natural.