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<meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" />
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<title>Logtalk built-in predicate: create_protocol/3</title>
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2005-12-24 18:00:21 +00:00
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Built-in predicate: create_protocol/3</div>
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<div class="bottom-left"><span class="page"/></div>
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<div class="bottom-right"><span class="page"/></div>
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<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>
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<h2 class="codenp">create_protocol/3<span id="builtins_create_protocol3"/></h2>
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<h4>Description</h4>
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<pre>create_protocol(Identifier, Relations, Directives)</pre>
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<p>
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Creates a new, dynamic, protocol.
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</p>
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<h4>Template and modes</h4>
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<pre>create_protocol(+protocol_identifier, +list, +list)</pre>
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<h4>Errors</h4>
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<dl>
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<dt>One of the predicate arguments is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>Identifier is not a valid protocol identifier:</dt>
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<dd><code>type_error(protocol_identifier, Identifier)</code></dd>
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<dt>Identifier is already in use:</dt>
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<dd><code>permission_error(replace, category, Identifier)</code></dd>
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<dd><code>permission_error(replace, object, Identifier)</code></dd>
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<dd><code>permission_error(replace, protocol, Identifier)</code></dd>
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<dt>Relations is neither a variable nor a proper list:</dt>
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<dd><code>type_error(list, Relations)</code></dd>
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<dt>Directives is neither a variable nor a proper list:</dt>
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<dd><code>type_error(list, Directives)</code></dd>
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</dl>
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<h4>Examples</h4>
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<pre>| ?- create_protocol(foo, [extends(bar)], [public(foo/1)]).</pre>
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<div class="footer">
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<div class="copyright">
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<span>Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://logtalk.org">Logtalk.org</a></span><br/>
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<span>Last updated on: October 26, 2006</span>
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