On Oct 17, 2008, at 10:30 AM, Peter Van Weert wrote:
Ernest Friedman-Hill schreef:
On Oct 17, 2008, at 9:06 AM, Henrique Lopes Cardoso wrote:
The rule fires in both runs. Is this the intended behavior?
It's traditional behavior for Rete engines, yes.
Is it so that modify is semantically completely equivalent with a
retract followed by an assert?
Well, yes, but you've put the cart before the horse a bit. It behaves
this way *because* modify is equivalent to a retract/assert.
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Ernest Friedman-Hill
Informatics & Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
http://www.jessrules.com
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