Method skip_empty_containers

cpp/icm/flat_iterator.hpp:181–187

    }

    void skip_empty_containers()
    {
        while (parent_iterator_ != containers_->end() - 1 && child_iterator_ == (*parent_iterator_).end()) {
            ++parent_iterator_;
            child_iterator_ = parent_iterator_->begin();
        }
    }

    const std::vector<C>* containers_;
    const std::vector<value_type>* offsets_;