我们应该从派生类调用基类移动副本/赋值构造函数

I understand that whenever a custom copy constructor or an assignment operator is defined in a derived class then it is the responsibility of those methods to call the respective methods of the base class. Now my focus is on the move constructors. Suppose the following is my move constructor. I have two ways of calling the base class constructor. Taken from I understand that whenever a custom copy constr