c++17

c++17

std::invoke

#include 
#include     //c++17 std::invoke

using namespace std;
class MyClass {
public:
    int memberVariable = 10;
    void memberFunction(int a, int b) {
        std::cout << "Member function called! a:" << a << " b:" << b << std::endl;
    }
};

int main() {
    MyClass obj;

    // 使用 std::invoke 调用成员函数指针
    void (MyClass::*funcPtr)(int,int) = &MyClass::memberFunction;
    std::invoke(funcPtr, obj,10,20);

    // 使用 std::invoke 访问成员对象指针
    int MyClass::*v = &MyClass::memberVariable;
    int value = std::invoke(v, obj);

    std::cout << "Value: " << value << std::endl;

    return 0;
}