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65 lines
2.6 KiB
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65 lines
2.6 KiB
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<title>Logtalk predicate directive: protected/1</title>
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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 id="directives_protected1" class="codenp">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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<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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