[Haskell-cafe] ANN: signed-multiset-0.1
stefan at vectorfabrics.com
Wed Apr 18 10:40:01 CEST 2012
>> This package provides an efficient implementation of so-called
>> signed multisets, which generalise multisets by allowing for
>> negative membership.
>> That is, elements in a signed multiset can have negative multiplicities.
> Wait, something can be not in the multiset more than once? :o
That's correct. :)
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