src/utils/is_one_of.hpp


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#pragma once

#include <type_traits>

template <typename...>
struct is_one_of_implem {
    static constexpr bool value = false;
};

template <typename F, typename S, typename... T>
struct is_one_of_implem<F, S, T...> {
    static constexpr bool value =
        std::is_same<F, S>::value || is_one_of_implem<F, T...>::value;
};

template<typename... T>
constexpr bool is_one_of = is_one_of_implem<T...>::value;