见见这段代码是否完美

看看这段代码是否完美

C/C++ code

bit(const bit &other) noexcept {}bit(bit &&other) noexcept {    // Reset source object}auto operator=(const bit &other) noexcept -> bit &{    if (this != &other)    {        bit tmp(other);        std::swap(*this, tmp);    }        return *this;}auto operator=(bit &&other) noexcept -> bit &{    if (this != &other)    {        bit tmp(forward<bit>(other));// 总觉得这里不够好, 为何不能直接 std::swap(*this, forward<bit>(other))?        std::swap(*this, tmp);    }        return *this;}