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66 lines
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66 lines
2.0 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
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<head>
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<meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" />
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<title>Logtalk predicate directive: protocol/1-2</title>
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<link rel="stylesheet" href="../../screen.css" type="text/css" media="screen"/>
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<link rel="stylesheet" href="../../print.css" type="text/css" media="print"/>
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<body>
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Predicate directive: protocol/1-2</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#directives">directives</a></div>
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<h2 id="directives_protocol1_2" class="codenp">protocol/1-2</h2>
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<h4>Description</h4>
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<pre>protocol(Protocol)
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protocol(Protocol,
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extends(Protocols))</pre>
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<p>
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Starting protocol directive.
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</p>
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<h4>Template and modes</h4>
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<pre>protocol(+protocol_identifier)
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protocol(+protocol_identifier,
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extends(+extended_protocols))</pre>
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<h4>Examples</h4>
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<pre>:- protocol(listp).
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:- protocol(listp,
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extends(compoundp)).
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:- protocol(queuep,
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extends(protected::listp)).</pre>
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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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