marcuskammer/cl-sites
1
0
Fork 0
Code Activity
cl-sites/guile.html_node/Reversing-and-Appending-Strings.html
Marcus Kammer b48bc28b1d
Add guile manual
2024-12-17 12:49:28 +01:00

145 lines
11 KiB
HTML
Raw Blame History

<!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>Reversing and Appending Strings (Guile Reference Manual)</title>
<meta name="description" content="Reversing and Appending Strings (Guile Reference Manual)">
<meta name="keywords" content="Reversing and Appending Strings (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="Strings.html" rel="up" title="Strings">
<link href="Mapping-Folding-and-Unfolding.html" rel="next" title="Mapping Folding and Unfolding">
<link href="Alphabetic-Case-Mapping.html" rel="prev" title="Alphabetic Case Mapping">
<style type="text/css">
<!--
a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
div.example {margin-left: 3.2em}
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="subsubsection-level-extent" id="Reversing-and-Appending-Strings">
<div class="nav-panel">
<p>
Next: <a href="Mapping-Folding-and-Unfolding.html" accesskey="n" rel="next">Mapping, Folding, and Unfolding</a>, Previous: <a href="Alphabetic-Case-Mapping.html" accesskey="p" rel="prev">Alphabetic Case Mapping</a>, Up: <a href="Strings.html" accesskey="u" rel="up">Strings</a> &nbsp; [<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="subsubsection" id="Reversing-and-Appending-Strings-1"><span>6.6.5.10 Reversing and Appending Strings<a class="copiable-link" href="#Reversing-and-Appending-Strings-1"> &para;</a></span></h4>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dreverse"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-reverse</strong> <var class="def-var-arguments">str [start [end]]</var><a class="copiable-link" href="#index-string_002dreverse"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005freverse"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_reverse</strong> <var class="def-var-arguments">(str, start, end)</var><a class="copiable-link" href="#index-scm_005fstring_005freverse"> &para;</a></span></dt>
<dd><p>Reverse the string <var class="var">str</var>. The optional arguments
<var class="var">start</var> and <var class="var">end</var> delimit the region of <var class="var">str</var> to
operate on.
</p></dd></dl>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dreverse_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-reverse!</strong> <var class="def-var-arguments">str [start [end]]</var><a class="copiable-link" href="#index-string_002dreverse_0021"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005freverse_005fx"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_reverse_x</strong> <var class="def-var-arguments">(str, start, end)</var><a class="copiable-link" href="#index-scm_005fstring_005freverse_005fx"> &para;</a></span></dt>
<dd><p>Reverse the string <var class="var">str</var> in-place. The optional arguments
<var class="var">start</var> and <var class="var">end</var> delimit the region of <var class="var">str</var> to
operate on. The return value is unspecified.
</p></dd></dl>
<a class="index-entry-id" id="index-string_002dappend-2"></a>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dappend"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-append</strong> <var class="def-var-arguments">arg &hellip;</var><a class="copiable-link" href="#index-string_002dappend"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005fappend"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_append</strong> <var class="def-var-arguments">(args)</var><a class="copiable-link" href="#index-scm_005fstring_005fappend"> &para;</a></span></dt>
<dd><p>Return a newly allocated string whose characters form the
concatenation of the given strings, <var class="var">arg</var> <small class="enddots">...</small>.
</p>
<div class="example">
<pre class="example-preformatted">(let ((h &quot;hello &quot;))
(string-append h &quot;world&quot;))
&rArr; &quot;hello world&quot;
</pre></div>
</dd></dl>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dappend_002fshared"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-append/shared</strong> <var class="def-var-arguments">arg &hellip;</var><a class="copiable-link" href="#index-string_002dappend_002fshared"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005fappend_005fshared"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_append_shared</strong> <var class="def-var-arguments">(args)</var><a class="copiable-link" href="#index-scm_005fstring_005fappend_005fshared"> &para;</a></span></dt>
<dd><p>Like <code class="code">string-append</code>, but the result may share memory
with the argument strings.
</p></dd></dl>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dconcatenate"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-concatenate</strong> <var class="def-var-arguments">ls</var><a class="copiable-link" href="#index-string_002dconcatenate"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005fconcatenate"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_concatenate</strong> <var class="def-var-arguments">(ls)</var><a class="copiable-link" href="#index-scm_005fstring_005fconcatenate"> &para;</a></span></dt>
<dd><p>Append the elements (which must be strings) of <var class="var">ls</var> together into a
single string. Guaranteed to return a freshly allocated string.
</p></dd></dl>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dconcatenate_002dreverse"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-concatenate-reverse</strong> <var class="def-var-arguments">ls [final_string [end]]</var><a class="copiable-link" href="#index-string_002dconcatenate_002dreverse"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005fconcatenate_005freverse"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_concatenate_reverse</strong> <var class="def-var-arguments">(ls, final_string, end)</var><a class="copiable-link" href="#index-scm_005fstring_005fconcatenate_005freverse"> &para;</a></span></dt>
<dd><p>Without optional arguments, this procedure is equivalent to
</p>
<div class="example lisp">
<pre class="lisp-preformatted">(string-concatenate (reverse ls))
</pre></div>
<p>If the optional argument <var class="var">final_string</var> is specified, it is
consed onto the beginning to <var class="var">ls</var> before performing the
list-reverse and string-concatenate operations. If <var class="var">end</var>
is given, only the characters of <var class="var">final_string</var> up to index
<var class="var">end</var> are used.
</p>
<p>Guaranteed to return a freshly allocated string.
</p></dd></dl>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dconcatenate_002fshared"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-concatenate/shared</strong> <var class="def-var-arguments">ls</var><a class="copiable-link" href="#index-string_002dconcatenate_002fshared"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005fconcatenate_005fshared"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_concatenate_shared</strong> <var class="def-var-arguments">(ls)</var><a class="copiable-link" href="#index-scm_005fstring_005fconcatenate_005fshared"> &para;</a></span></dt>
<dd><p>Like <code class="code">string-concatenate</code>, but the result may share memory
with the strings in the list <var class="var">ls</var>.
</p></dd></dl>
<dl class="first-deffn">
<dt class="deffn" id="index-string_002dconcatenate_002dreverse_002fshared"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">string-concatenate-reverse/shared</strong> <var class="def-var-arguments">ls [final_string [end]]</var><a class="copiable-link" href="#index-string_002dconcatenate_002dreverse_002fshared"> &para;</a></span></dt>
<dt class="deffnx def-cmd-deffn" id="index-scm_005fstring_005fconcatenate_005freverse_005fshared"><span class="category-def">C Function: </span><span><strong class="def-name">scm_string_concatenate_reverse_shared</strong> <var class="def-var-arguments">(ls, final_string, end)</var><a class="copiable-link" href="#index-scm_005fstring_005fconcatenate_005freverse_005fshared"> &para;</a></span></dt>
<dd><p>Like <code class="code">string-concatenate-reverse</code>, but the result may
share memory with the strings in the <var class="var">ls</var> arguments.
</p></dd></dl>
</div>
<hr>
<div class="nav-panel">
<p>
Next: <a href="Mapping-Folding-and-Unfolding.html">Mapping, Folding, and Unfolding</a>, Previous: <a href="Alphabetic-Case-Mapping.html">Alphabetic Case Mapping</a>, Up: <a href="Strings.html">Strings</a> &nbsp; [<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>
</body>
</html>
View git blame Copy permalink