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<title>Logtalk predicate directive: protocol/1-2</title>
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<div class="top-left">Logtalk reference manual</div>
<div class="top-right">Predicate directive: protocol/1-2</div>
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<h2 id="directives_protocol1_2" class="codenp">protocol/1-2</h2>
<h4>Description</h4>
<pre>protocol(Protocol)
protocol(Protocol,
extends(Protocols))</pre>
<p>
Starting protocol directive.
</p>
<h4>Template and modes</h4>
<pre>protocol(+protocol_identifier)
protocol(+protocol_identifier,
extends(+extended_protocols))</pre>
<h4>Examples</h4>
<pre>:- protocol(listp).
:- protocol(listp,
extends(compoundp)).
:- protocol(queuep,
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/>
<span>Last updated on: October 26, 2006</span>
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