Method operator-

libCacheSim/dataStructure/sparsepp/spp.h:842–854

    }

    friend size_t operator-(iterator l, iterator f)
    {
        if (f.row_current->is_marked())
            return 0;

        size_t diff(0);
        while (f != l)
        {
            ++diff;
            ++f;
        }
        return diff;
    }

    iterator& operator++()
    {