(Posted to both perl-qa and perl-internals. Reply-To set to perl-internals) What do you think of creating a mechanism for attaching pre-, post-, invariant conditions to the internals? How is for another time. I'm wondering about the effort to design the internals properly. Then during alpha and beta testing, the conditionals would be active and verifying the specifications. During ship and user testing, they would be off. <chaim> -- Chaim Frenkel Nonlinear Knowledge, Inc. chaimf@pobox.com +1-718-236-0183