Question

Is the following valid? Or how can I get something close to this.

template<class T_> class Template {
   //something
};

class Parent {
public:
   Template<Parent> variable;

   Parent() : variable(this) { }
};

class Derived : public Parent {
public:
   Template<Derived> variable;

   Derived() : Parent() { }
}

Thanks in advance.

Answer 1

It’s technically “valid” in that your compiler has to accept it (it may warn you, and IMHO it should), but it doesn’t do what you think it does: Derived’s variable is separate from Parent‘s, and is not getting explicitly initialized (so it uses the default ctor for Template<>).