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68 lines
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68 lines
2.6 KiB
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<title>Logtalk built-in method: current_predicate/1</title>
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Built-in method: current_predicate/1</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#methods">built-in methods</a></div>
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<h2 class="codenp">current_predicate/1<span id="methods_current_predicate1"/></h2>
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<h4>Description</h4>
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<pre>current_predicate(Predicate)</pre>
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<p>
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Enumerates, by backtracking, the visible user predicates for an object.
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</p>
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<h4>Template and modes</h4>
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<pre>current_predicate(?predicate_indicator)</pre>
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<h4>Errors</h4>
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<dl>
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<dt>Predicate is neither a variable nor a valid predicate indicator:</dt>
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<dd><code>type_error(predicate_indicator, Predicate)</code></dd>
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</dl>
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<h4>Examples</h4>
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<dl>
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<dt>To enumerate, by backtracking, the user predicates visible in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>:</dt>
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<dd><code>current_predicate(Predicate)</code></dd>
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<dt>To enumerate, by backtracking, the public and protected user predicates visible in <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a>:</dt>
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<dd><code>::current_predicate(Predicate)</code></dd>
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<dt>To enumerate, by backtracking, the public user predicates visible for an object:</dt>
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<dd><code>Object::current_predicate(Predicate)</code></dd>
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</dl>
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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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