如何在c++11中将元组转换为字节数组

#include <tuple>
#include <array>

template <typename T>
std::array<unsigned char, sizeof(T)> toByteArray(const T& value) {
    std::array<unsigned char, sizeof(T)> bytes;
    const unsigned char* begin = reinterpret_cast<const unsigned char*>(&value);
    const unsigned char* end = begin + sizeof(T);
    std::copy(begin, end, bytes.begin());
    return bytes;
}

template <typename... Args, std::size_t... Indices>
std::array<unsigned char, sizeof...(Args)> tupleToByteArrayHelper(const std::tuple<Args...>& tuple, std::index_sequence<Indices...>) {
    return std::array<unsigned char, sizeof...(Args)>{toByteArray(std::get<Indices>(tuple))...};
}

template <typename... Args>
std::array<unsigned char, sizeof...(Args)> tupleToByteArray(const std::tuple<Args...>& tuple) {
    return tupleToByteArrayHelper(tuple, std::index_sequence_for<Args...>{});
}

int main() {
    std::tuple<int, float, double> myTuple(42, 3.14f, 2.71828);
    auto byteArray = tupleToByteArray(myTuple);

    // 打印字节数组的内容
    for (const auto& byte : byteArray) {
        std::cout << static_cast<int>(byte) << " ";
    }
    std::cout << std::endl;

    return 0;
}