68 lines
2.9 KiB
HTML
68 lines
2.9 KiB
HTML
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<html lang="en">
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<head>
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<title>Loops - Enigma</title>
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<meta name="description" content="Enigma">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Language.html#Language" title="Language">
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<link rel="prev" href="Conditionals.html#Conditionals" title="Conditionals">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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This manual is for Enigma, version 0.1.
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Copyright (C) 2010 Niels Serup
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Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License,
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Version 1.3 or any later version published by the Free Software
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Foundation; with no Invariant Sections, no Front-Cover Texts, and
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no Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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This document is also available under the terms of the Creative
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Commons Attribution-Share Alike 3.0 (or any later version)
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Unported license. A copy of the license is available at
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`http://creativecommons.org/licenses/by-sa/3.0/legalcode'.
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</head>
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<body>
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<div class="node">
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<a name="Loops"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Undefined.html#Undefined">Undefined</a>,
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Previous: <a rel="previous" accesskey="p" href="Conditionals.html#Conditionals">Conditionals</a>,
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Up: <a rel="up" accesskey="u" href="Language.html#Language">Language</a>
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<hr>
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</div>
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<h3 class="section">2.9 Loops</h3>
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<p>There are several ways to loop pieces of code in Enigma. One can create
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a function that calls itself, for example. It is, however, advised to
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use the <code>loop</code> function.
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<pre class="verbatim"># Infinite loop
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{stdout "Forever\n" ! write; true = return;} ! loop;
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</pre>
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<code>loop</code> works a bit like <code>act</code>, except that it runs on the
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premise of the return value of the function it calls. If it returns
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true, or any other value that can be considered true (non-zero numbers,
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non-empty strings, files, etc.), it runs the function again. If it
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returns false, the loop stops. It naturally runs the first time no
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matter what (no return value has been created yet).
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</body></html>
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