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66 lines
2.6 KiB
HTML
66 lines
2.6 KiB
HTML
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<head>
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<meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" />
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<title>Logtalk control construct: ^^/1</title>
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<link rel="stylesheet" href="../../screen.css" type="text/css" media="screen"/>
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<body>
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Control construct: ^^/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#constructs">control constructs</a></div>
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<h2 class="code">^^/1</h2>
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<h4>Description</h4>
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<pre>^^Predicate</pre>
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<p>
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Calls a redefined/inherited definition for a message. Normally only used in the body of a predicate definition for the message. Predicate should match a public or protected predicate of <a class="glossary" title="Go to glossary definition" href="../../glossary.html#self">self</a> or be within the scope of <a class="glossary" title="Go to glossary definition" href="../../glossary.html#this">this</a>.
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</p>
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<h4>Template and modes</h4>
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<pre>^^+message</pre>
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<h4>Errors</h4>
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<dl class="errors">
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<dt>Predicate is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>Predicate is declared private:</dt>
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<dd><code>permission_error(access, private_predicate, Predicate)</code></dd>
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<dt>Predicate is not declared:</dt>
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<dd><code>existence_error(predicate_declaration, Predicate)</code></dd>
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<dt>Container of the inherited predicate definition is the same object that contains the <code>^^/1</code> call:</dt>
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<dd><code>endless_loop(Predicate)</code></dd>
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</dl>
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<h4>Examples</h4>
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<pre>init :-
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assertz(counter(0)),
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^^init.</pre>
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<div class="navbottom"><a href="to_self1.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="../index.html#constructs">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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