<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" /> <title>Logtalk built-in predicate: create_protocol/3</title> <link rel="stylesheet" href="../../screen.css" type="text/css" media="screen"/> <link rel="stylesheet" href="../../print.css" type="text/css" media="print"/> </head> <body> <div class="top-left">Logtalk reference manual</div> <div class="top-right">Built-in predicate: create_protocol/3</div> <div class="bottom-left"><span class="page"/></div> <div class="bottom-right"><span class="page"/></div> <div class="navtop"><a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#builtins">built-in predicates</a></div> <h2 class="code">create_protocol/3</h2> <h4>Description</h4> <pre>create_protocol(Identifier, Relations, Directives)</pre> <p> Creates a new, dynamic, protocol. </p> <h4>Template and modes</h4> <pre>create_protocol(+protocol_identifier, +list, +list)</pre> <h4>Errors</h4> <dl class="errors"> <dt>One of the predicate arguments is a variable:</dt> <dd><code>instantiation_error</code></dd> <dt>Identifier is not a valid protocol identifier:</dt> <dd><code>type_error(protocol_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 neither a variable nor a proper list:</dt> <dd><code>type_error(list, Relations)</code></dd> <dt>Directives is neither a variable nor a proper list:</dt> <dd><code>type_error(list, Directives)</code></dd> </dl> <h4>Examples</h4> <pre>| ?- create_protocol(foo, [extends(bar)], [public(foo/1)]).</pre> <div class="footer"> <div class="navbottom"><a href="create_object4.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="../index.html#builtins">next</a></div> <div class="copyright">Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://www.logtalk.org">Logtalk.org</a></div> <div class="footnote"> <span class="validators"><a href="http://validator.w3.org/check/referer">XHTML</a> + <a href="http://jigsaw.w3.org/css-validator/check/referer">CSS</a></span> <span class="date">Last updated on: January 21, 2006</span> </div> </div> </body> </html>