fd048651b6
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@55 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
75 lines
1.8 KiB
HTML
75 lines
1.8 KiB
HTML
<!doctype html public "-//W3C//DTD HTML 4.01//EN"
|
|
"http://www.w3.org/TR/html4/strict.dtd">
|
|
|
|
<html>
|
|
|
|
<head>
|
|
<title>instantiates_class/2-3</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#instantiates_class2_3">instantiates_class/2-3</a></code></h2>
|
|
<hr />
|
|
|
|
<h4>Description</h4>
|
|
|
|
<blockquote>
|
|
<pre>
|
|
instantiates_class(Instance, Class)
|
|
|
|
instantiates_class(Instance, Class, Scope)
|
|
</pre>
|
|
<p>
|
|
Enumerates, by backtracking, all pairs of objects such that the first one instantiates the second.
|
|
</p>
|
|
</blockquote>
|
|
|
|
<h4>Template and modes</h4>
|
|
|
|
<blockquote>
|
|
<pre>
|
|
instantiates_class(?object_identifier, ?object_identifier)
|
|
|
|
instantiates_class(?object_identifier, ?object_identifier, ?entity_scope)
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<h3>Errors</h3>
|
|
|
|
<blockquote>
|
|
<dl>
|
|
<dt>Instance is neither a variable nor a valid object identifier:</dt>
|
|
<dd><code>type_error(object_identifier, Instance)</code></dd>
|
|
<dt>Class is neither a variable nor a valid object identifier:</dt>
|
|
<dd><code>type_error(object_identifier, Class)</code></dd>
|
|
<dt>Scope is neither a variable nor a valid entity scope:</dt>
|
|
<dd><code>type_error(entity_scope, Scope)</code></dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<h4>Examples</h4>
|
|
|
|
<blockquote>
|
|
<pre>
|
|
| ?- instantiates_class(water_jug, state_space).
|
|
|
|
| ?- instantiates_class(Space, state_space, public).
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<hr />
|
|
<p class="center">
|
|
<strong><a href="imports_category2_3.html">Previous</a> | <a href="specializes_class2_3.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>
|