Override number of parameters of pure virtual functions

Question

I have implemented the following interface:

template 
class Variable
{
public:
  Variable (T v) : m_value (v) {}
  virtual void Callback ()         


        

Answer 1

don't think this will be possible, because you can never interface it back to Variable. This is what i mean

int a=0; int b = 0;
Variable* derived = new Derived();
derived->Callback(a, b); //this won't compile because Variable does not have Callback with 2 vars.