Method operator++

include/tabulate/table.hpp:127–130

    explicit RowIterator(std::vector<std::shared_ptr<Row>>::iterator ptr) : ptr(ptr) {}

    RowIterator operator++() {
      ++ptr;
      return *this;
    }
    bool operator!=(const RowIterator &other) const { return ptr != other.ptr; }
    Row &operator*() { return **ptr; }