I think Peter Lin wrote: > it is because you're doing combinatorial pattern matching. that rule > is telling the engine to match every new instance with all existing > facts. >
Jess is actually pretty smart about this. It does far fewer actual comparisons than you'd expect due to indexing in working memory. But if you read the O.P.'s question again, you'll see that what should be a trivial change (modifying the data type of a slot) can have a drastic effect on the runtime of the program. And indeed, I tried reproducing this and was able to do so easily. I don't know why this is, yet; I'll report back later. --------------------------------------------------------- Ernest Friedman-Hill Advanced Software 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] --------------------------------------------------------------------
