How do I create summing rules? Suppose I have the following facts:
post(cash, 26) . post(cash, -16) . post(cash, 50) . post(beer, 20) . How do I create a rule "bal" bal(X, ???) such that the ??? gives me the sum of the second arguments in post satisfying the first argument X? Also, is there a way of writing floats, or is that out of the question? _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
