#pragma once

namespace saw {

template <class T, class... TL> struct parameter_pack_index;

template <class T, class... TL> struct parameter_pack_index<T, T, TL...> {
	static constexpr size_t value = 0u;
};

template <class T, class TL0, class... TL>
struct parameter_pack_index<T, TL0, TL...> {
	static constexpr size_t value =
		1u + parameter_pack_index<T, TL...>::value;
};
}