ensuring sucess upon backtracking

michael.goodrich_at_gmail.com
Date: 03/23/05 

Date: 23 Mar 2005 08:38:13 -0800

Greetings Prolog Community;

I am faced with a curious Prolog problem, and request some help.

I am doing a simulation in which a random variable is generated in a
goal which will prove subsequently to need a different 'randomized'
value since the first one will prove to be unsuitable for various
reasons. I would like to obtain a different random value by
backtracking successfully over the previously encountered rng predicate
in this single clause goal.

Would appreciate guidance on how to achieve this.

Thanx in advance,

-Mike Goodrich

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