模板变成2

Posted 2022-02-14 osbreak

 

void PrintT(int& t)

    std::cout << "lvalue" << std::endl;


template <typename T>
void PrintT(T&& t)

    std::cout << "rvalue" << std::endl;


template <typename T>
void TestForward(T&& v)

    PrintT(v);
    PrintT(std::forward<T>(v));
    PrintT(std::move(v));


void Test()

    TestForward(1);
    int x = 1;
    TestForward(x);
    TestForward(std::forward<int>(x));


int main(void)

    Test();
    system("pause");
    return 0;