Casting from member function pointer to another type and back, strict-aliasing issue?
铸造成员函数指针到另一个类型和背部，严格的混叠问题？
If the base member took different arguments than the derived-class member, there would be no way to call the derived function from a reference or pointer to the base type.
如果基类成员与派生类成员接受的实参不同，就没有办法通过基类类型的引用或指针调用派生类函数。
How can I use a private member variable in a non-member function, when the variable happens to be a pointer?
我如何能在非成员函数使用私有成员变量时，变量是指针？
How do I declare and use a pointer to a class member function?
我如何申报，并使用一个指向类成员函数？
How do I declare and use a pointer to a class member function?
我如何申报，并使用一个指向类成员函数？
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