MQL5 ReferenceStandard LibraryGeneric Data CollectionsCHashSet<T>Comparer AddCountContainsComparerTrimExcessCopyToClearRemoveExceptWithIntersectWithSymmetricExceptWithUnionWithIsProperSubsetOfIsProperSupersetOfIsSubsetOfIsSupersetOfOverlapsSetEquals Comparer Returns a pointer to the IEqualityComparer<T> interface, used to organize a set. IEqualityComparer<T>* Comparer() const; Return Value Returns a pointer to the IEqualityComparer<T> interface. Contains TrimExcess