---
tags: codebook
---

# dvector

template<typename T,int level>
struct dvector{
	using value_type = dvector<T, level-1>;
	vector<value_type> data;
	template<typename... Args>
	dvector(int n, Args... args){
		data.assign(n, value_type(args...));
	}
	auto& operator[](int index){
		return data[index];
	}
};

template<typename T>
struct dvector<T, 1>{
	using value_type = T;
	vector<value_type> data;
	dvector(int n){
		data.assign(n, 0);
	}
	auto& operator[](int index){
		return data[index];
	}
};