Indeed, the "return" function is effectively overloaded; it does
something entirely different when called from the RHS of a rule than
it does when called anywhere else. Your expectation is correct: the
"return" in the function will not affect the focus stack.
On Jul 20, 2007, at 11:29 AM, D Moon wrote:
Dr. EF-H and other Jess Users,
I would like to confirm that Jess functions are not partitioned by
module (like rules and facts are) and therefore do not affect
module focus.
E.g. I have a global.clp that contains a set of rules defmodule'd
into MAIN:: but I also define in global.clp some functions for use
from the MAIN::, as well as from other modules. (I have organized
my code so that all non-module specific code goes into global.clp.)
So in another module (e.g. SCORE), I'm firing a rule with a RHS
that calls the function defined in global.clp. If I have an
explicit (return) in the function, I hope that *the function*
returns, but that the SCORE module is not popped from the focus
stack -- as is the case in a (return) from the RHS of a rule. Due
to the facts I have in working memory, even with (watch all) I am
having difficulty determining whether my function is popping the
SCORE module or whether SCORE is popping due to no more activated
SCORE rules to fire.
I am using Jess 7.0b5 (1/5/2006).
V/R,
Moon
---------------------------------------------------------
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://www.jessrules.com
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