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<h2><a class="back" title="Return to index" href="../index.html#mode2"><code>mode/2</code></a></h2>
<h4>Description</h4>
<blockquote>
<pre>
mode(Mode, Number_of_solutions)
</pre>
<p>
Most predicates can be used with several instantiations modes. This directive enables the specification of each instantiation mode and the corresponding number of solutions/proofs.
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<h4>Template and modes</h4>
mode(+predicate_mode_term, +number_of_solutions)
<h4>Examples</h4>
:- mode(append(-, -, +), zero_or_more).
:- mode(append(+list, +list, -list), zero_or_one).
:- mode(var(@term), zero_or_one).
:- mode(arg(-, -, +), error).
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Last updated on: August 6, 2002
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