GPT5给了个更现代的写法，替换了不再使用的一些废弃方式。我也不知道写的咋样，没细看

class ThreadPool {
public:
    template <class F, class... Args>
    auto Enqueue(F&& f, Args&&... args)
        -> std::future<std::invoke_result_t<F, Args...>>
    {
        using return_type = std::invoke_result_t<F, Args...>;

        // 用 lambda 代替 bind
        auto task = std::make_shared<std::packaged_task<return_type()>>(
            [func = std::forward<F>(f), ... args = std::forward<Args>(args)]() mutable {
                return std::invoke(std::move(func), std::move(args)...);
            }
        );

        std::future<return_type> res = task->get_future();

        {
            std::unique_lock<std::mutex> lock(queue_mutex);
            tasks.emplace([task]() { (*task)(); });
        }
        condition.notify_one();

        return res;
    }

private:
    std::mutex queue_mutex;
    std::condition_variable condition;
    std::queue<std::function<void()>> tasks;
};
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