[boost] Re: Sealed/Final implementation.

From: Daniel Wesslén (wesslen_at_[hidden])
Date: 2005-01-13 07:45:59

Jonathan Wakely skrev:
> On Thu, Jan 13, 2005 at 12:49:33PM +1000, kalin wrote:
> 
> This is a simpler way of preventing inheritance:
> 
>   class Finaliser
>   {
>   protected:
>     Finaliser(){}
>   };
> 
>   class Final : private virtual Finaliser
>   {
>     // rest of class as normal
>   };
> 
> [...]
> There's another problem with Final that lets you derive from it in a
> class with user-defined constructors, if you know how. Our wiki where
> I work offers a chocolate bar to anyone who points it out but noone's
> claimed it from me yet :)

class WillCompile : public Final, virtual Finaliser {
public:
        WillCompile() {}
};

Will you mail the chocolate bar to me then?

Daniel