Did you try the (break)<http://www.jessrules.com/jess/docs/71/functions.html#break>function?
Arguments:NoneReturns:N/ADescription: Immediately exit any enclosing loop or control scope. Can be used inside of for<http://www.jessrules.com/jess/docs/71/functions.html#for>, while <http://www.jessrules.com/jess/docs/71/functions.html#while>, and foreach <http://www.jessrules.com/jess/docs/71/functions.html#foreach>loops, as well as within the body of a deffunction<http://www.jessrules.com/jess/docs/71/constructs.html#deffunction>or the right hand side of a defrule <http://www.jessrules.com/jess/docs/71/constructs.html#defrule>. If called anywhere else, will throw an exception. *Jason C. Morris* President, Principal Consultant Morris Technical Solutions LLC President, Rules Fest Association Chairman, IntelliFest 2012: International Conference on Reasoning Technologies -------------------------------------------- phone: +01.517.376.8314 skype: jcmorris-mts email: consult...@morris-technical-solutions.com mybio: http://www.linkedin.com/in/jcmorris www.intellifest.org Invent * Innovate * Implement at IntelliFest! On Thu, May 23, 2013 at 12:43 PM, Przemyslaw Woznowski < p.r.woznow...@cs.cf.ac.uk> wrote: > Hi Jess users, > > I have the following function: > > (deffunction similarity-score (?base ?other) > (bind ?score 0) > (bind ?totalDistance 0) > (bind ?counter 0) > (foreach ?x ?base > (bind ?counter (+ ?counter 1)) > (printout t "counter is:" ?counter) > (bind ?partialDistance 0) > (printout t "partialDist is:" ?partialDistance) > (foreach ?y ?other > (bind ?partialDistance (+ ?partialDistance 1)) > (printout t "foreach partialDist is:" ?partialDistance) > (if (eq ?x ?y) then > (bind ?score (+ ?score 1)) > (printout t "score is:" ?score) > (return) > ) > ) > (bind ?totalDistance (/ ?counter ?partialDistance)) > ) > (return (- (/ ?score (length$ ?base)) (* (- 1 (/ (length$ ?base) > ?totalDistance)) 0.1) )) > ) > > As you can see, the above function has a nested foreach loop, which upon > finding equal values in both list should skip to the next iteration of the > outer loop. In java, instead of (return) one would normally put a break > statement. As far as the documentation of the (foreach) construct reads, it > says: "The return function can be used to break the iteration". However, > what I am finding is that the (return) function terminates the outer loop > too - unless I seriously messed up the code - but this is the result of my > observation of the (printout t) function. Moreover, when I remove the > (return) function, the function iterates over the outer and inner loops > just fine. > > Any advice on how can I break the inner's loop iteration? I know I can use > a variable to flag that the match has been found and add it to the if > statement, but I am hoping that there is an equivalent of break in Jess. > > > Cheers, > Pete >
