id.h

#pragma once

#include "df.h"

class Id : public DF
{
public:
	Id();
	Id(const DF &);
	bool operator<(const Id &) const;

	Id &append_idx(const std::vector<int> &);

	Id with_idx(const std::vector<int> &) const;

	std::string to_string() const;
};