DocumentationMQL5 ReferenceStandard LibraryGeneric Data CollectionsCHashSet<T>ComparerComparerComparerReturns a pointer to the IEqualityComparer interface, used to organize a set.IEqualityComparer<T>* Comparer() const;Return Value Returns a pointer to the IEqualityComparer interface.Last updated on 2026-07-24ContainsTrimExcess