74 lines
2.1 KiB
HTML
74 lines
2.1 KiB
HTML
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<!doctype html public "-//W3C//DTD HTML 4.01//EN"
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"http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<title>predicate_property/2</title>
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<link rel=stylesheet href="../../styles.css" type="text/css">
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</head>
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<body>
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<hr />
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<h2><code><a class="back" title="Return to index" href="../index.html#predicate_property2">predicate_property/2</a></code></h2>
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<hr />
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<h4>Description</h4>
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<blockquote>
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<pre>
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predicate_property(Predicate, Property)
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</pre>
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<p>
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Enumerates, by backtracking, the properties of a visible predicate.
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</p>
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</blockquote>
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<h4>Template and modes</h4>
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<blockquote>
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<pre>
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predicate_property(+callable, ?predicate_property)
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</pre>
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</blockquote>
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<h3>Errors</h3>
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<blockquote>
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<dl>
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<dt>Predicate is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>Predicate is neither a variable nor a callable term:</dt>
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<dd><code>type_error(callable, Predicate)</code></dd>
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<dt>Property is neither a variable nor a valid predicate property:</dt>
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<dd><code>domain_error(predicate_property, Property)</code></dd>
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</dl>
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</blockquote>
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<h4>Examples</h4>
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<blockquote>
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<dl>
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<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>
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<dd><code>predicate_property(foo(_), Property)</code></dd>
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<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>
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<dd><code>::predicate_property(foo(_), Property)</code></dd>
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<dt>To enumerate, by backtracking, the properties of a public predicate visible in an object:</dt>
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<dd><code>Object::predicate_property(foo(_), Property)</code></dd>
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</dl>
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</blockquote>
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<hr />
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<p class="center">
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<strong><a href="current_predicate1.html">Previous</a> | <a href="abolish1.html">Next</a> | <a href="../index.html">Table of Contents</a> | <a href="../../bibliography.html">Bibliography</a> | <a href="../../glossary.html">Glossary</a></strong>
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</p>
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<p class="center">
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Last updated on: July 4, 2000
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</p>
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<hr />
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</body>
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</html>
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