JESS: In function

[Michael Beaulieu]

I'm brand new to Jess and I was wondering if there was already a 
function available to facilitate the matching of a slot value being in a 
list of valid values

(deftemplate bla
 (slot data) )
(defrule foobar
 (bla (data (in ('foo','bar') ) ) )
=>
...
I am a little confused how I would approach this type of problem ( or is 
this a proper use of the rule engine?? ) - if I've glossed over the 
section in the book I'd appreciate someone pointing out what chapter I 
should look in.

Thanks for your time.

Mike

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