Hi!

On Wed, 11 Nov 2009, Russell N Hyer wrote:

> So you're really talking about having two types of null?
>
No. I'm talking about letting a set contain nil. Try evaluating Set with: 
nil. and you will see what my problem is.

> nil being the set that contains nothing
>
nil is not a set. Set new gives you an empty set.

Cheers,
Levente