型から値をだすmap Type to Value map on C++

Type2ValueMap.hpp

#include<boost\any.hpp>
#include<unordered_map>
#include<typeindex>
#include<iostream>
#include<string>

class Type2ValueMap
{
public:
	template<class T>
	const T&get()const
	{
		return boost::any_cast<const T&>(map.at(typeid(T)));
	}
	template<class T>
	void set(const T&x){map[typeid(T)] = x;}
private:
	std::unordered_map<std::type_index, boost::any> map;
};