88 lines
3.5 KiB
HTML
88 lines
3.5 KiB
HTML
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Inc.
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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Permission is granted to copy, distribute and/or modify this document
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<title>Writing new Modules (Guile Reference Manual)</title>
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Using-the-Guile-Module-System.html" rel="up" title="Using the Guile Module System">
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<link href="Putting-Extensions-into-Modules.html" rel="next" title="Putting Extensions into Modules">
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<div class="subsection-level-extent" id="Writing-new-Modules">
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<p>
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Next: <a href="Putting-Extensions-into-Modules.html" accesskey="n" rel="next">Putting Extensions into Modules</a>, Previous: <a href="Using-Modules.html" accesskey="p" rel="prev">Using Modules</a>, Up: <a href="Using-the-Guile-Module-System.html" accesskey="u" rel="up">Using the Guile Module System</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<hr>
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<h4 class="subsection subsubsection-level-set-subsection" id="Writing-new-Modules-1"><span>2.5.2 Writing new Modules<a class="copiable-link" href="#Writing-new-Modules-1"> ¶</a></span></h4>
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<p>You can create new modules using the syntactic form
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<code class="code">define-module</code>. All definitions following this form until the
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next <code class="code">define-module</code> are placed into the new module.
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</p>
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<p>One module is usually placed into one file, and that file is installed
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in a location where Guile can automatically find it. The following
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session shows a simple example.
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</p>
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<div class="example smallexample">
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<pre class="example-preformatted">$ cat /usr/local/share/guile/site/foo/bar.scm
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(define-module (foo bar)
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#:export (frob))
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(define (frob x) (* 2 x))
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$ guile
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scheme@(guile-user)> (use-modules (foo bar))
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scheme@(guile-user)> (frob 12)
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$1 = 24
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</pre></div>
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<p>For more on how to install your module, see <a class="pxref" href="Installing-Site-Packages.html">Installing Site Packages</a>.
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</p>
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</div>
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