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<title>Logtalk predicate directive: metapredicate/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">Predicate directive: metapredicate/1</div>
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<div class="bottom-left"><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#directives">directives</a></div>
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<h2 class="code">metapredicate/1</h2>
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<h4>Description</h4>
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<pre>metapredicate(Metapredicate)</pre>
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<p>
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Declares metapredicates, i.e., predicates that have arguments that will be called as goals.
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</p>
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<h4>Template and modes</h4>
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<pre>metapredicate(+metapredicate_predicate_term)</pre>
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<h4>Examples</h4>
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<pre>:- metapredicate(findall(*, ::, *)).
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:- metapredicate(forall(::, ::)).</pre>
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<div class="navbottom"><a href="info2.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="mode2.html">next</a></div>
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<div class="copyright">Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://www.logtalk.org">Logtalk.org</a></div>
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<span class="date">Last updated on: November 16, 2005</span>
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