Elizabeth Mattijsen <[EMAIL PROTECTED]> writes:
> At 04:03 AM 7/23/02 +1000, Ken Williams wrote:
> >> return unless ref($_[0]);
> >I usually just call UNIVERSAL::isa($_[0], 'your::class::name') in these cases.
>
> That's a good tip.
>
> I actually generalized this to:
>
> return unless UNIVERSAL::isa( $_[0],__PACKAGE__ );
>
> This will be implemented in Thread::Pool 0.17... ;-)
Don't you still have a 'subclass problem? Consider some parent class
with children A,B,C & D. If a 'D' gets DESTROYed correctly at first and
then a subsequent spurious DESTROY passes an object that's morphed
into a 'C' then you're protection is stuffed.
--
Piers
"It is a truth universally acknowledged that a language in
possession of a rich syntax must be in need of a rewrite."
-- Jane Austen?
