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63 lines
2.6 KiB
HTML
63 lines
2.6 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
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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 predicate directive: protected/1</title>
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<link rel="stylesheet" href="../../screen.css" type="text/css" media="screen"/>
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<link rel="stylesheet" href="../../print.css" type="text/css" media="print"/>
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</head>
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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">Predicate directive: protected/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#directives">directives</a></div>
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<h2 class="code">protected/1</h2>
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<h4>Description</h4>
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<pre>protected(Functor/Arity)
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protected(Functor1/Arity1, Functor2/Arity2, ...)
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protected([Functor1/Arity1, Functor2/Arity2, ...])
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protected(Functor//Arity)
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protected(Functor1//Arity1, Functor2//Arity2, ...)
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protected([Functor1//Arity1, Functor2//Arity2, ...])</pre>
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<p>
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Declares protected predicates and protected grammar rule non-terminals. A protected predicate can only be called from the object containing the directive or from an object that inherits the directive. A protected non-terminal can only be used as an argument in a <a title="Consult reference manual" href="../methods/phrase2.html"><code>phrase/2</code></a> and <a title="Consult reference manual" href="../methods/phrase3.html"><code>phrase/3</code></a> messages sent from the object containing the directive or from an object that inherits the directive.
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</p>
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<h4>Template and modes</h4>
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<pre>protected(+predicate_indicator_term)
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protected(+non_terminal_indicator_term)</pre>
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<h4>Examples</h4>
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<pre>:- protected(init/1).
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:- protected(print/2, convert/4).
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:- protected([load/1, save/3]).</pre>
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<div class="footer">
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<div class="navbottom"><a href="private1.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="public1.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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<div class="footnote">
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<span class="validators"><a href="http://validator.w3.org/check/referer">XHTML</a> + <a href="http://jigsaw.w3.org/css-validator/check/referer">CSS</a></span>
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<span class="date">Last updated on: November 16, 2005</span>
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