I think Alan Moore wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] > Is there a difference between the following: > > (not (MyJavaObject)) > and > > (not (exists (MyJavaObject))) > > beyond performance or internal jess overhead?
No, they should mean the same thing. > I was running into a problem (I am using 6.1b1) where the rule was firing > when there *was* an instance of MyJavaObject definstance'd. If this is the case, it's a bug. Although if it were, it's likely fixed in 6.1b2 already, I'd very much like to reproduce it to make sure. > > After reading the manual and the cautionary note about calling reset() when > working with the (not) conditional element, I discovered that reset() was > not being called anywhere - could this explain the behavior? > reset really only matters for (not) conditional elements that are the first CE in a group of CEs -- i.e., the first on the LHS of a rule, or the first in an (and) group or branch of an (or). Please try to send me some code that replicates the problem so we can make sure it's gone. You can also upgrade to 6.1b2 and find out how that works for you. --------------------------------------------------------- Ernest Friedman-Hill Distributed Systems Research Phone: (925) 294-2154 Sandia National Labs FAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] --------------------------------------------------------------------
