<?xml version="1.0" encoding="iso-8859-1"?> <?xml-stylesheet type="text/css" href="../../styles.css" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>create_category/4</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#create_category4">create_category/4</a></code></h2> <hr /> <h4>Description</h4> <blockquote> <pre> create_category(Identifier, Relations, Directives, Clauses) </pre> <p> Creates a new, dynamic, category. </p> </blockquote> <h4>Template and modes</h4> <blockquote> <pre> create_category(+category_identifier, +list, +list, +list) </pre> </blockquote> <h4>Errors</h4> <blockquote> <dl> <dt>Identifier is a variable:</dt> <dd><code>instantiation_error</code></dd> <dt>Identifier is not a valid category identifier:</dt> <dd><code>type_error(category_identifier, Identifier)</code></dd> <dt>Identifier is already in use:</dt> <dd><code>permission_error(replace, category, Identifier)</code></dd> <dd><code>permission_error(replace, object, Identifier)</code></dd> <dd><code>permission_error(replace, protocol, Identifier)</code></dd> <dt>Relations is not a list:</dt> <dd><code>type_error(list, Relations)</code></dd> <dt>Directives is not a list:</dt> <dd><code>type_error(list, Directives)</code></dd> <dt>Clauses is not a list:</dt> <dd><code>type_error(list, Clauses)</code></dd> </dl> </blockquote> <h4>Examples</h4> <blockquote> <pre> | ?- create_category(foo, [implements(bar)], [], [bar(1), bar(2)]). </pre> </blockquote> <hr /> <p class="center"> <strong><a href="protocol_property2.html">Previous</a> | <a href="create_object4.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: August 6, 2002 </p> <hr /> </body> </html>