Comparing objects of different classes derived from the same base

Question

I have two classes, let's say DerivedOne and DerivedTwo, derived from a base class Base.

Assuming I have these:

DerivedOne d1;
DerivedTwo d2;

when I compare d1 and d2, I'd like d1 to always be smaller, in other words an object of DerivedOne should have a higher priority than an object of DerivedTwo. What is the best/nicest way to do that?

Answer 1

I do not know if this is the nicest, but I would recommend using the instanceof operator inside the comparator.