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git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1539 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
55 lines
2.0 KiB
HTML
55 lines
2.0 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 entity directive: op/3</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">Entity directive: op/3</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">op/3</h2>
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<h4>Description</h4>
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<pre>op(Precedence, Associativity, Operator)</pre>
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<p>
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Declares operators. Operators declared inside objects and categories have local scope. Global operators can be declared inside a source file by writing the respective directives before the entity opening directives.
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</p>
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<h4>Template and modes</h4>
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<pre>op(+integer, +associativity, +atom_or_atom_list)</pre>
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<h4>Examples</h4>
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<pre>:- op(950, fx, +).
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:- op(950, fx, ?).
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:- op(950, fx, @).
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:- op(950, fx, -).</pre>
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<div class="footer">
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<div class="navbottom"><a href="mode2.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="private1.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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</div>
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</div>
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</body>
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</html>
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