Functor I_USet.Make

module Make (O : Immutable_types.Comparable) : Immutable_types.RSet  with
  type elt = O.t
Creates an add / remove set of elements satisfying Immutable_types.Comparable
Parameters:
O : Immutable_types.Comparable

include Immutable_types.GSet
val remove : elt -> t -> t
remove el t removes el from t only if el is in t. Returns t otherwise.