virtual variable in C++?
c++, virtual
Solution
Complier will make an indirection/lookup for virtual methods. This only applies to methods (aka. member functions). This indirection/lookup is not applied in C++ to data members (what you called variables).
See following picture which may give a better graphical representation: http://www.yaldex.com/games-programming/FILES/05fig07.gif
So, provide access through [virtual] getter/setter.
Problem
Is it possible to instead of have a virtual function have a virtual variable? ``` class B { virtual int fn(); /*virtual int val;*/ }; class D1: public B { virtual int fn() {return 0;}; /*int D1::val = 0;*/ class D2: public B { virtual int fn() {return 3;}; /*int D2::val = 3;*/ ``` Right now i'm writing `b->fn()` because I have no idea how to have a virtual variable which I think would be more efficient (`b->val`). Is it possible in C++? Basically I want to have a const variable instead of a const function pointer in the vtable.