C++11 integer_sequence

integer_sequence.hpp

#pragma once

namespace std14
{
	template<typename T, T... Ints>
	struct integer_sequence
	{
		typedef T value_type;
		static constexpr std::size_t size() { return sizeof...(Ints); }
	};
	
	template<std::size_t... Ints>
	using index_sequence = integer_sequence<std::size_t, Ints...>;
	
	template<typename T, std::size_t N, T... Is>
	struct make_integer_sequence : make_integer_sequence<T, N-1, N-1, Is...> {};
	
	template<typename T, T... Is>
	struct make_integer_sequence<T, 0, Is...> : integer_sequence<T, Is...> {};
	
	template<std::size_t N>
	using make_index_sequence = make_integer_sequence<std::size_t, N>;
	
	template<typename... T>
	using index_sequence_for = make_index_sequence<sizeof...(T)>;
}