获得可变模板类的第N个参数的最简单方法是什么？

#include <iostream>
#include <tuple>
#include <type_traits>

template <typename Tuple, std::size_t N>
struct getter {
    constexpr static auto get(Tuple&& t) {
        if constexpr (N == std::tuple_size_v<Tuple>) {
            return std::move(t);
        } else {
            return std::get<N>(std::move(t));
        }
    }
};

int main() {
    std::tuple<int, double, std::string> my_tuple = {1, 3.14, "Hello, world!"};
    auto nth_parameter = getter<std::tuple<int, double, std::string>, 2>{};
    auto result = nth_parameter.get(my_tuple);
    
    if (std::is_same_v<std::tuple_element_t<2, std::tuple<int, double, std::string>>, std::string>) {
        std::cout << "The second element is a string: " << result << std::endl;
    } else {
        std::cout << "The second element is a " << std::result_of<decltype(result)>::type() << std::endl;
    }
    
    return 0;
}