c++ 多线程， 处理数据转换

示例代码，

#include <iostream>
#include <future>
#include <thread>
#include <vector>


template <typename T, typename R>
struct Task{
    typedef  std::vector<T>     value_source;
    typedef  std::vector<R>     value_result;

    Task(uint32_t numbers = 4):m_thread(numbers){

    }

    template <typename CONVERT>
    void go_task(const value_source &source, value_result &result, CONVERT conver_func){
        std::vector<std::vector<T>>  split_source(m_thread);
        std::vector<std::vector<R>>  split_result(m_thread);

        auto one_size = source.size() / m_thread;
        auto sp_size = source.size() % one_size;        //find surplus
        std::vector<std::future<value_result>> vec_ff;


        for(int i = 0; i < m_thread; i++){
            if(i == m_thread - 1 && sp_size != 0){  //add