Shen Professional 3.1.epub May 2026

Even if you’re just curious about alternative programming models, the book’s approach—where theory is immediately tied to runnable examples—makes it a pleasant and enlightening read. 6. Quick Sample Walkthrough Below is a condensed version of a code snippet from Chapter 7 – Logic Programming in Shen , illustrating how you can query a simple family tree.

;; Query: Who are Alice’s grandchildren? (println (run* (?g) (ancestor 'alice ?g))) : Shen Professional 3.1.epub

;; Ancestor predicate using recursion + backtracking (define (ancestor ?x ?y) (or (parent ?x ?y) (exists ((?z (parent ?x ?z))) (ancestor ?z ?y)))) Even if you’re just curious about alternative programming