You can't do it in a template, but you COULD conceivably do it using
JessEvents; the FACT | ASSERTED event arrives right before the fact
is pushed through working memory, so you could actually change the
slot contents in a handler; this could be used to set a default value.
On Feb 11, 2008, at 6:27 AM, Henrique Lopes Cardoso wrote:
Hi,
I was wondering if there is a way of setting a default value for a
slot
to be equal to another slot.
Something like:
(deftemplate foo
(slot bar)
(slot qwe (default-dynamic this.bar))))
(assert (foo (bar 1)))
Slot qwe would get the value of slot bar, that is, 1.
---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://www.jessrules.com
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