Prolog programs have both logical and procedural meanings. In this post we'll take a look at procedural ideas more commonly associated with functional programming than Prolog, namely: map, filter and reduce (foldl and foldr). We'll code them and then query them.

An example of using depth first and breadth first searches (written to be nearly identical to highlight the subtle difference between a stack and a queue) to solve three common puzzles commonly used as examples in AI textbooks.