Method enqueue_task

tenseal/cpp/utils/threadpool.h:61–74

     **/
    template <typename F, typename... Args>
    auto enqueue_task(F&& f, Args&&... args)
        -> std::future<typename std::result_of<F(Args...)>::type> {
        using return_type = typename std::result_of<F(Args...)>::type;

        auto task = std::make_shared<std::packaged_task<return_type()>>(
            std::bind(std::forward<F>(f), std::forward<Args>(args)...));
        std::future<return_type> res = task->get_future();
        auto work = [task]() { (*task)(); };

        unsigned int i = m_index++;
        m_queues[i % m_count].push(work);

        return res;
    }

   private:
    using Proc = std::function<void(void)>;