<!doctype html public "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>current_predicate/1</title> <link rel=stylesheet href="../../styles.css" type="text/css"> </head> <body> <hr /> <h2><code><a class="back" title="Return to index" href="../index.html#current_predicate1">current_predicate/1</a></code></h2> <hr /> <h4>Description</h4> <blockquote> <pre> current_predicate(Predicate) </pre> <p> Enumerates, by backtracking, the visible user predicates for an object. </p> </blockquote> <h4>Template and modes</h4> <blockquote> <pre> current_predicate(?predicate_indicator) </pre> </blockquote> <h4>Errors</h4> <blockquote> <dl> <dt>Predicate is neither a variable nor a valid predicate indicator:</dt> <dd><code>type_error(predicate_indicator, Predicate)</code></dd> </dl> </blockquote> <h4>Examples</h4> <blockquote> <dl> <dt>To enumerate, by backtracking, the user predicates visible in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>:</dt> <dd><code>current_predicate(Predicate)</code></dd> <dt>To enumerate, by backtracking, the public and protected user predicates visible in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a>:</dt> <dd><code>::current_predicate(Predicate)</code></dd> <dt>To enumerate, by backtracking, the public user predicates visible for an object:</dt> <dd><code>Object::current_predicate(Predicate)</code></dd> </dl> </blockquote> <hr /> <p class="center"> <strong><a href="this1.html">Previous</a> | <a href="predicate_property2.html">Next</a> | <a href="../index.html">Table of Contents</a> | <a href="../../bibliography.html">Bibliography</a> | <a href="../../glossary.html">Glossary</a></strong> </p> <p class="center"> Last updated on: October 21, 2001 </p> <hr /> </body> </html>