86 lines
4.1 KiB
HTML
86 lines
4.1 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<!-- Created by GNU Texinfo 7.1, https://www.gnu.org/software/texinfo/ -->
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<!-- This manual documents Guile version 3.0.10.
|
||
|
|
|
||
|
|
Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
|
||
|
|
Inc.
|
||
|
|
|
||
|
|
Copyright (C) 2021 Maxime Devos
|
||
|
|
|
||
|
|
Copyright (C) 2024 Tomas Volf
|
||
|
|
|
||
|
|
|
||
|
|
Permission is granted to copy, distribute and/or modify this document
|
||
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
||
|
|
any later version published by the Free Software Foundation; with no
|
||
|
|
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
|
||
|
|
copy of the license is included in the section entitled "GNU Free
|
||
|
|
Documentation License." -->
|
||
|
|
<title>General Conversion (Guile Reference Manual)</title>
|
||
|
|
|
||
|
|
<meta name="description" content="General Conversion (Guile Reference Manual)">
|
||
|
|
<meta name="keywords" content="General Conversion (Guile Reference Manual)">
|
||
|
|
<meta name="resource-type" content="document">
|
||
|
|
<meta name="distribution" content="global">
|
||
|
|
<meta name="Generator" content=".texi2any-real">
|
||
|
|
<meta name="viewport" content="width=device-width,initial-scale=1">
|
||
|
|
|
||
|
|
<link href="index.html" rel="start" title="Top">
|
||
|
|
<link href="Concept-Index.html" rel="index" title="Concept Index">
|
||
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
||
|
|
<link href="Utility-Functions.html" rel="up" title="Utility Functions">
|
||
|
|
<link href="Hooks.html" rel="next" title="Hooks">
|
||
|
|
<link href="Copying.html" rel="prev" title="Copying">
|
||
|
|
<style type="text/css">
|
||
|
|
<!--
|
||
|
|
a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
|
||
|
|
span:hover a.copiable-link {visibility: visible}
|
||
|
|
strong.def-name {font-family: monospace; font-weight: bold; font-size: larger}
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
<link rel="stylesheet" type="text/css" href="https://www.gnu.org/software/gnulib/manual.css">
|
||
|
|
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body lang="en">
|
||
|
|
<div class="subsection-level-extent" id="General-Conversion">
|
||
|
|
<div class="nav-panel">
|
||
|
|
<p>
|
||
|
|
Next: <a href="Hooks.html" accesskey="n" rel="next">Hooks</a>, Previous: <a href="Copying.html" accesskey="p" rel="prev">Copying Deep Structures</a>, Up: <a href="Utility-Functions.html" accesskey="u" rel="up">General Utility Functions</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>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
<h4 class="subsection" id="General-String-Conversion"><span>6.9.5 General String Conversion<a class="copiable-link" href="#General-String-Conversion"> ¶</a></span></h4>
|
||
|
|
|
||
|
|
|
||
|
|
<p>When debugging Scheme programs, but also for providing a human-friendly
|
||
|
|
interface, a procedure for converting any Scheme object into string
|
||
|
|
format is very useful. Conversion from/to strings can of course be done
|
||
|
|
with specialized procedures when the data type of the object to convert
|
||
|
|
is known, but with this procedure, it is often more comfortable.
|
||
|
|
</p>
|
||
|
|
<p><code class="code">object->string</code> converts an object by using a print procedure for
|
||
|
|
writing to a string port, and then returning the resulting string.
|
||
|
|
Converting an object back from the string is only possible if the object
|
||
|
|
type has a read syntax and the read syntax is preserved by the printing
|
||
|
|
procedure.
|
||
|
|
</p>
|
||
|
|
<dl class="first-deffn">
|
||
|
|
<dt class="deffn" id="index-object_002d_003estring"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">object->string</strong> <var class="def-var-arguments">obj [printer]</var><a class="copiable-link" href="#index-object_002d_003estring"> ¶</a></span></dt>
|
||
|
|
<dt class="deffnx def-cmd-deffn" id="index-scm_005fobject_005fto_005fstring"><span class="category-def">C Function: </span><span><strong class="def-name">scm_object_to_string</strong> <var class="def-var-arguments">(obj, printer)</var><a class="copiable-link" href="#index-scm_005fobject_005fto_005fstring"> ¶</a></span></dt>
|
||
|
|
<dd><p>Return a Scheme string obtained by printing <var class="var">obj</var>.
|
||
|
|
Printing function can be specified by the optional second
|
||
|
|
argument <var class="var">printer</var> (default: <code class="code">write</code>).
|
||
|
|
</p></dd></dl>
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|