How to require operator overloading in interface

[Jesse Phillips]

On Saturday, 20 July 2013 at 18:53:44 UTC, JS wrote:
> if they want to allow the same op in there class, which they 
> probably do, they have to override the long hand anyways and 
> redirect.

Nope, that is why you make the template final and forwards, all 
derived classes will be able to instantiate the template and 
behavior will be overridden by the forwarded function.