Dear all, While following the "Jess in action" book to learn JESS, I run into a question.
On page 207 of the book, there is one line of code that I cannot understand fully. The part of the Listing 13.1 has (bind ?s ?question " ") and I don't quite understand why the additional " " was used in this bind method. I tried to see the effect of the additional " " by experimenting it in the JESS command line, but did not find any meaningful difference. For example, JESS prompt> (bind ?question "Hello") JESS prompt> (bind ?s ?question " ") JESS prompt> ?s ;; returns "Hello" without the space JESS prompt> (bind ?question "Hello") JESS prompt> (bind ?s ?question "123") JESS prompt> ?s ;; returns only "Hello" without 123 Can any one explain when I need to use additional " " or any string in the bind method in JESS? Thanks in advance. Young-Jin Lee -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users y...@address.com' in the BODY of a message to majord...@sandia.gov, NOT to the list (use your own address!) List problems? Notify owner-jess-us...@sandia.gov. --------------------------------------------------------------------
