Monadic disjoint set https://github.com/clintonmead/disjoint-set-stateful
|Latest on Hackage:||0.1.1.0|
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This package includes a monadic disjoint int set datatype, which can also be "frozen" into a non-monadic queriable disjoint set (which however can not be modified).
In the future, I will write a wrapper that allows disjoint sets for all datatypes.
One common use case for disjoint sets is for creating equivalence classes.