I don't know about VW but sets are often implemented (VAST) with nils as empty place holders as a memory allocation efficiency but the nils are not considered part of the set or the count of items in the set. So:
Set with: nil
and
Set new add: nil; yourself
might create valid sets but I expect they are empty.
Lou
On Sun, 18 Sep 2005 14:47:48 -0500, Andres Valloud sqrmax@optonline.net wrote:
Hello Andreas,
AR> That's hillarious! In particular considering that VW allows nil in AR> sets...
The expressions
Set with: nil
and
Set new add: nil; yourself
answer an empty set in VW 7.2.1. Has this changed in VW 7.3.x?
----------------------------------------------------------- Louis LaBrunda Keystone Software Corp. SkypeMe callto://PhotonDemon mailto:Lou@Keystone-Software.com http://www.Keystone-Software.com