9f1b358c04
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1486 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
69 lines
2.9 KiB
HTML
69 lines
2.9 KiB
HTML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
|
|
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
|
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
|
|
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
|
|
<title>Logtalk built-in method: predicate_property/2</title>
|
|
<link rel="stylesheet" href="../../screen.css" type="text/css" media="screen"/>
|
|
<link rel="stylesheet" href="../../print.css" type="text/css" media="print"/>
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<div class="top-left">Logtalk reference manual</div>
|
|
<div class="top-right">Built-in method: predicate_property/2</div>
|
|
<div class="bottom-left"><span class="page"/></div>
|
|
<div class="bottom-right"><span class="page"/></div>
|
|
<div class="navtop"><a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#methods">built-in methods</a></div>
|
|
|
|
<h2 class="code">predicate_property/2</h2>
|
|
|
|
|
|
<h4>Description</h4>
|
|
|
|
<pre>predicate_property(Predicate, Property)</pre>
|
|
<p>
|
|
Enumerates, by backtracking, the properties of a visible predicate.
|
|
</p>
|
|
|
|
<h4>Template and modes</h4>
|
|
|
|
<pre>predicate_property(+callable, ?predicate_property)</pre>
|
|
|
|
<h4>Errors</h4>
|
|
|
|
<dl class="errors">
|
|
<dt>Predicate is a variable:</dt>
|
|
<dd><code>instantiation_error</code></dd>
|
|
<dt>Predicate is neither a variable nor a callable term:</dt>
|
|
<dd><code>type_error(callable, Predicate)</code></dd>
|
|
<dt>Property is neither a variable nor a valid predicate property:</dt>
|
|
<dd><code>domain_error(predicate_property, Property)</code></dd>
|
|
</dl>
|
|
|
|
<h4>Examples</h4>
|
|
|
|
<dl class="examples">
|
|
<dt>To enumerate, by backtracking, the properties of a predicate visible in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>:</dt>
|
|
<dd><code>predicate_property(foo(_), Property)</code></dd>
|
|
<dt>To enumerate, by backtracking, the properties of a public or protected predicate visible in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a>:</dt>
|
|
<dd><code>::predicate_property(foo(_), Property)</code></dd>
|
|
<dt>To enumerate, by backtracking, the properties of a public predicate visible in an object:</dt>
|
|
<dd><code>Object::predicate_property(foo(_), Property)</code></dd>
|
|
</dl>
|
|
|
|
<div class="footer">
|
|
<div class="navbottom"><a href="current_predicate1.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="../index.html#methods">next</a></div>
|
|
<div class="copyright">Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://www.logtalk.org">Logtalk.org</a></div>
|
|
<div class="footnote">
|
|
<span class="validators"><a href="http://validator.w3.org/check/referer">XHTML</a> + <a href="http://jigsaw.w3.org/css-validator/check/referer">CSS</a></span>
|
|
<span class="date">Last updated on: November 16, 2005</span>
|
|
</div>
|
|
</div>
|
|
|
|
</body>
|
|
</html>
|