Method advance_to_occupied

src/fl/stl/unordered_map.h:228–234

        bool operator!=(const iterator &o) const { return !(*this == o); }

        void advance_to_occupied() {
            if (!_map)
                return;
            fl::size cap = _map->_buckets.size();
            while (_idx < cap && !_map->is_occupied(_idx))
                ++_idx;
        }

      private:
        unordered_map *_map;