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<meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" />
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<title>Logtalk built-in predicate: current_category/1</title>
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2005-12-24 18:00:21 +00:00
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Built-in predicate: current_category/1</div>
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<div class="bottom-left"><span class="page"/></div>
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<div class="bottom-right"><span class="page"/></div>
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<div class="navtop"><a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#builtins">built-in predicates</a></div>
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<h2 class="codenp">current_category/1<span id="builtins_current_category1"/></h2>
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<h4>Description</h4>
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<pre>current_category(Category)</pre>
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<p>
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Enumerates, by backtracking, all currently defined categories. All categories are found, either static, dynamic, or built-in.
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</p>
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<h4>Template and modes</h4>
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<pre>current_category(?category_identifier)</pre>
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2001-12-05 23:57:48 +00:00
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<h4>Errors</h4>
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<dl>
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<dt>Category is neither a variable nor a valid category identifier:</dt>
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<dd><code>type_error(category_identifier, Category)</code></dd>
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</dl>
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<h4>Examples</h4>
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<pre>| ?- current_category(monitoring).</pre>
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<div class="copyright">
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<span>Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://logtalk.org">Logtalk.org</a></span><br/>
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<span>Last updated on: October 26, 2006</span>
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