Drawing Prolog Search Trees: A Manual for Teachers and Students of Logic Programming

preprint2020arXivOpen access

Abstract

Programming in Prolog is hard for programmers that are used to procedural coding. In this manual the method of drawing search trees is introduced with the aim to get a better understanding of how Prolog works. After giving a first example of a Prolog database, query and search tree, the art of drawing search trees is systematically introduced giving guidelines for queries with variables, conjunction, disjunction, and negation. Further examples are provided by giving the complete search trees that are shown in Learn Prolog Now!

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