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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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<h4>Description</h4>

<blockquote>
<pre>
predicate_property(Predicate, Property)
</pre>
<p>
	Enumerates, by backtracking, the properties of a visible predicate.
</p>
</blockquote>

<h4>Template and modes</h4>

<blockquote>
<pre>
predicate_property(+callable, ?predicate_property)
</pre>
</blockquote>

<h4>Errors</h4>

<blockquote>
	<dl>
		<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>
</blockquote>

<h4>Examples</h4>

<blockquote>
	<dl>
		<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>
</blockquote>

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Last updated on: October 21, 2001
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