[boost] Re: Sealed/Final implementation.

13 Jan 2005


      Jonathan Wakely wrote:
...
On Thu, Jan 13, 2005 at 12:49:33PM +1000, kalin wrote:
...
Hi All, I've made a simple implementation of making a class non-derivable.
I can't compile this with GCC3 or Comeau.
GCC2 lets me compile it (due to its flakey friend implementation) but it
also allows Bar to inherit from Foo!
This is a simpler way of preventing inheritance:
class Finaliser
  {
  protected:
    Finaliser(){}
  };
class Final : private virtual Finaliser
  {
    // rest of class as normal
  };
How about:

class Finaliser
{
   friend class Final;
   Finaliser(){}
};

class Final : private virtual Finaliser
{
};

?

Tom

[boost] Re: Sealed/Final implementation.

Tom Widmer