65 lines
1.2 KiB
HTML
65 lines
1.2 KiB
HTML
|
<!doctype html public "-//W3C//DTD HTML 4.01//EN"
|
||
|
|
"http://www.w3.org/TR/html4/strict.dtd">
|
||
|
|
|
||
|
|
<html>
|
||
|
|
|
||
|
|
<head>
|
||
|
|
<title>retractall/1</title>
|
||
|
|
<link rel=stylesheet href="../../styles.css" type="text/css">
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<hr />
|
||
|
|
<h2><code><a class="back" title="Return to index" href="../index.html#retractall1">retractall/1</a></code></h2>
|
||
|
|
<hr />
|
||
|
|
|
||
|
|
<h4>Description</h4>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
retractall(Head)
|
||
|
|
</pre>
|
||
|
|
<p>
|
||
|
|
Logtalk adds this built-in predicate, with the usual definition, to a Prolog compiler if it is not already defined.
|
||
|
|
</p>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<h4>Template and modes</h4>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
retractall(+callable)
|
||
|
|
</pre>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<h3>Errors</h3>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<dl>
|
||
|
|
<dt>Head is not a callable term:</dt>
|
||
|
|
<dd><code>type_error(callable, Head)</code></dd>
|
||
|
|
</dl>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<h4>Examples</h4>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
| ?- retractall(foo(_)).
|
||
|
|
</pre>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<hr />
|
||
|
|
<p class="center">
|
||
|
|
<strong><a href="logtalk_version3.html">Previous</a> | <a href="../methods/parameter2.html">Next</a> | <a href="../index.html">Table of Contents</a> | <a href="../../bibliography.html">Bibliography</a> | <a href="../../glossary.html">Glossary</a></strong>
|
||
|
|
</p>
|
||
|
|
<p class="center">
|
||
|
|
Last updated on: July 4, 2000
|
||
|
|
</p>
|
||
|
|
<hr />
|
||
|
|
|
||
|
|
</body>
|
||
|
|
|
||
|
|
</html>
|