78 lines
3.7 KiB
HTML
78 lines
3.7 KiB
HTML
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<!DOCTYPE html>
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<html>
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<!-- Created by GNU Texinfo 7.1, https://www.gnu.org/software/texinfo/ -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<!-- This manual documents Guile version 3.0.10.
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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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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
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copy of the license is included in the section entitled "GNU Free
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Documentation License." -->
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<title>Void Ports (Guile Reference Manual)</title>
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<meta name="description" content="Void Ports (Guile Reference Manual)">
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<link href="index.html" rel="start" title="Top">
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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="Port-Types.html" rel="up" title="Port Types">
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<link href="Low_002dLevel-Custom-Ports.html" rel="next" title="Low-Level Custom Ports">
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<link href="Soft-Ports.html" rel="prev" title="Soft Ports">
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</head>
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<body lang="en">
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<div class="subsubsection-level-extent" id="Void-Ports">
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<div class="nav-panel">
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<p>
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Next: <a href="Low_002dLevel-Custom-Ports.html" accesskey="n" rel="next">Low-Level Custom Ports</a>, Previous: <a href="Soft-Ports.html" accesskey="p" rel="prev">Soft Ports</a>, Up: <a href="Port-Types.html" accesskey="u" rel="up">Types of Port</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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</div>
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<hr>
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<h4 class="subsubsection" id="Void-Ports-1"><span>6.12.10.6 Void Ports<a class="copiable-link" href="#Void-Ports-1"> ¶</a></span></h4>
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<a class="index-entry-id" id="index-Void-port"></a>
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<a class="index-entry-id" id="index-Port_002c-void"></a>
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<p>This kind of port causes any data to be discarded when written to, and
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always returns the end-of-file object when read from.
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</p>
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<dl class="first-deffn">
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<dt class="deffn" id="index-_0025make_002dvoid_002dport"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">%make-void-port</strong> <var class="def-var-arguments">mode</var><a class="copiable-link" href="#index-_0025make_002dvoid_002dport"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fsys_005fmake_005fvoid_005fport"><span class="category-def">C Function: </span><span><strong class="def-name">scm_sys_make_void_port</strong> <var class="def-var-arguments">(mode)</var><a class="copiable-link" href="#index-scm_005fsys_005fmake_005fvoid_005fport"> ¶</a></span></dt>
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<dd><p>Create and return a new void port. A void port acts like
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<samp class="file">/dev/null</samp>. The <var class="var">mode</var> argument
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specifies the input/output modes for this port: see the
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documentation for <code class="code">open-file</code> in <a class="ref" href="File-Ports.html">File Ports</a>.
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</p></dd></dl>
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</div>
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</body>
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</html>
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