如何在 C++11 中将元组转换为字节数组

How to convert tuple to byte array in c++11(如何在 C++11 中将元组转换为字节数组)

问题描述

我需要编写一个函数来将元组转换为字节数组.元组的类型可能包括int、long、double、std::string、char*等.元组的大小和类型是任意的，比如

I need to write a function to convert tuple to byte array. The type of tuple may include int, long, double, std::string, char*,etc. The size and type of tuple are arbitrary, such as

std:tuple<string, int, double> t1("abc", 1, 1.3);

或

std:tuple<char*, int, int, float, double, string> t2("abc", 1, 2, 1.3, 1.4, "hello");

我想使用这些元组作为输入，字节数组作为返回值.我该怎么办 ?

I want use these tuple as input, and the byte array as return value. What should I do ?

推荐答案

还有精彩的C++ API 用于 消息包，它原生支持元组

There is also the brilliant C++ API for message pack which supports tuples natively

#include <string>
#include <sstream>
#include <tuple>

#include <msgpack.hpp>

int main() {
    auto t = std::make_tuple("1", 1, 1.0);
    auto buffer = std::stringstream{};

    // easy peezy
    msgpack::pack(buffer, t);
    auto tuple_as_string = buffer.str();
}

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