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yap-6.3/Logtalk/manuals/refman/methods/before3.html
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<title>Logtalk built-in method: before/3</title>
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<div class="top-left">Logtalk reference manual</div>
<div class="top-right">Built-in method: before/3</div>
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<h2 class="codenp">before/3<span id="methods_before3"/></h2>
<h4>Description</h4>
<pre>before(Object, Message, Sender)</pre>
<p>
User-defined public method for handling <code>before</code> events. This method is declared in the <code>monitoring</code> built-in protocol.
</p>
<h4>Template and modes</h4>
<pre>before(?object, ?term, ?object)</pre>
<h4>Errors</h4>
<blockquote>
<p>
(none)
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<h4>Examples</h4>
<pre>before(Object, Message, Sender) :-
writeq(Object), write('::'), writeq(Message),
write(' from '), writeq(Sender), nl.</pre>
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<span>Last updated on: December 11, 2006</span>
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