MQL5参考标准程序库通用数据集CHashSet<T>Comparer AddCountContainsComparerTrimExcessCopyToClearRemoveExceptWithIntersectWithSymmetricExceptWithUnionWithIsProperSubsetOfIsProperSupersetOfIsSubsetOfIsSupersetOfOverlapsSetEquals Comparer 返回IEqualityComparer<T>接口指针,用于组织一个集合。 IEqualityComparer<T>* Comparer() const; 返回值 返回IEqualityComparer<T>接口的指针。 Contains TrimExcess