<!doctype html public "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>^^/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#to_super1">^^/1</a></code></h2> <hr /> <h4>Description</h4> <blockquote> <pre> ^^Predicate </pre> <p> Calls a redefined/inherited definition for a message. Normally only used in the body of a predicate definition for the message. Predicate should match a public or protected predicate of <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a> or be within the scope of <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>. </p> </blockquote> <h4>Template and modes</h4> <blockquote> <pre> ^^+message </pre> </blockquote> <h3>Errors</h3> <blockquote> <dl> <dt>Predicate is a variable:</dt> <dd><code>instantiation_error</code></dd> <dt>Predicate is declared private:</dt> <dd><code>permission_error(access, private_predicate, Predicate)</code></dd> <dt>Predicate is not declared:</dt> <dd><code>existence_error(predicate_declaration, Predicate)</code></dd> <dt>Container of the inherited predicate definition is the same object that contains the <code>^^/1</code> call:</dt> <dd><code>endless_loop(Predicate)</code></dd> </dl> </blockquote> <h4>Examples</h4> <blockquote> <pre> init :- assertz(counter(0)), ^^init. </pre> </blockquote> <hr /> <p class="center"> <strong><a href="to_self1.html">Previous</a> | <a href="external1.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: July 4, 2000 </p> <hr /> </body> </html>