Re: [boost] Re: Sealed/Final implementation.

From: Jonathan Wakely (cow_at_[hidden])
Date: 2005-01-13 13:05:03

On Thu, Jan 13, 2005 at 03:53:30PM +0000, Tom Widmer wrote:

> How about:
> 
> class Finaliser
> {
>   friend class Final;
>   Finaliser(){}
> };
> 
> class Final : private virtual Finaliser
> {
> };
> 
> ?

Yeah, that works, but Finaliser has to know about Final in advance, you
can't just (virtually) derive an existing class from Final to make it
final (which is what I think the OP's solution was trying to achieve
with templates - but you're not allowed template params as friends).

jon

-- 
"That which needs to be proved cannot be worth much."
	- Nietzsche