85 lines
4.6 KiB
HTML
85 lines
4.6 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>Simple Output (Guile Reference Manual)</title>
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<meta name="description" content="Simple Output (Guile Reference Manual)">
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<meta name="keywords" content="Simple Output (Guile Reference Manual)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content=".texi2any-real">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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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="Input-and-Output.html" rel="up" title="Input and Output">
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<link href="Buffering.html" rel="next" title="Buffering">
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<link href="Textual-I_002fO.html" rel="prev" title="Textual I/O">
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<style type="text/css">
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a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
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span:hover a.copiable-link {visibility: visible}
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strong.def-name {font-family: monospace; font-weight: bold; font-size: larger}
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-->
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</style>
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<link rel="stylesheet" type="text/css" href="https://www.gnu.org/software/gnulib/manual.css">
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</head>
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<body lang="en">
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<div class="subsection-level-extent" id="Simple-Output">
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<div class="nav-panel">
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<p>
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Next: <a href="Buffering.html" accesskey="n" rel="next">Buffering</a>, Previous: <a href="Textual-I_002fO.html" accesskey="p" rel="prev">Textual I/O</a>, Up: <a href="Input-and-Output.html" accesskey="u" rel="up">Input and Output</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="subsection" id="Simple-Textual-Output"><span>6.12.5 Simple Textual Output<a class="copiable-link" href="#Simple-Textual-Output"> ¶</a></span></h4>
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<p>Guile exports a simple formatted output function, <code class="code">simple-format</code>.
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For a more capable formatted output facility, See <a class="xref" href="Formatted-Output.html">Formatted Output</a>.
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</p>
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<dl class="first-deffn">
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<dt class="deffn" id="index-simple_002dformat"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">simple-format</strong> <var class="def-var-arguments">destination message . args</var><a class="copiable-link" href="#index-simple_002dformat"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fsimple_005fformat"><span class="category-def">C Function: </span><span><strong class="def-name">scm_simple_format</strong> <var class="def-var-arguments">(destination, message, args)</var><a class="copiable-link" href="#index-scm_005fsimple_005fformat"> ¶</a></span></dt>
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<dd><p>Write <var class="var">message</var> to <var class="var">destination</var>, defaulting to the current
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output port. <var class="var">message</var> can contain <code class="code">~A</code> and <code class="code">~S</code> escapes.
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When printed, the escapes are replaced with corresponding members of
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<var class="var">args</var>: <code class="code">~A</code> formats using <code class="code">display</code> and <code class="code">~S</code> formats
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using <code class="code">write</code>. If <var class="var">destination</var> is <code class="code">#t</code>, then use the
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current output port, if <var class="var">destination</var> is <code class="code">#f</code>, then return a
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string containing the formatted text. Does not add a trailing newline.
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</p></dd></dl>
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<p>Somewhat confusingly, Guile binds the <code class="code">format</code> identifier to
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<code class="code">simple-format</code> at startup. Once <code class="code">(ice-9 format)</code> loads, it
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actually replaces the core <code class="code">format</code> binding, so depending on
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whether you or a module you use has loaded <code class="code">(ice-9 format)</code>, you
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may be using the simple or the more capable version.
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</p>
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</div>
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</body>
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</html>
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