mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-19 10:32:02 -05:00
192 lines
9.5 KiB
HTML
192 lines
9.5 KiB
HTML
<?xml version="1.0" encoding="utf-8" ?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" />
|
|
<title>Function Output Iterator</title>
|
|
<meta name="author" content="David Abrahams, Jeremy Siek, Thomas Witt" />
|
|
<meta name="organization" content="Boost Consulting, Indiana University Open Systems Lab, University of Hanover Institute for Transport Railway Operation and Construction" />
|
|
<meta name="date" content="2006-09-11" />
|
|
<meta name="copyright" content="Copyright David Abrahams, Jeremy Siek, and Thomas Witt 2003." />
|
|
<link rel="stylesheet" href="../../../rst.css" type="text/css" />
|
|
</head>
|
|
<body>
|
|
<div class="document" id="function-output-iterator">
|
|
<h1 class="title">Function Output Iterator</h1>
|
|
<table class="docinfo" frame="void" rules="none">
|
|
<col class="docinfo-name" />
|
|
<col class="docinfo-content" />
|
|
<tbody valign="top">
|
|
<tr><th class="docinfo-name">Author:</th>
|
|
<td>David Abrahams, Jeremy Siek, Thomas Witt</td></tr>
|
|
<tr><th class="docinfo-name">Contact:</th>
|
|
<td><a class="first reference external" href="mailto:dave@boost-consulting.com">dave@boost-consulting.com</a>, <a class="reference external" href="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</a>, <a class="last reference external" href="mailto:witt@ive.uni-hannover.de">witt@ive.uni-hannover.de</a></td></tr>
|
|
<tr><th class="docinfo-name">Organization:</th>
|
|
<td><a class="first reference external" href="http://www.boost-consulting.com">Boost Consulting</a>, Indiana University <a class="reference external" href="http://www.osl.iu.edu">Open Systems
|
|
Lab</a>, University of Hanover <a class="last reference external" href="http://www.ive.uni-hannover.de">Institute for Transport
|
|
Railway Operation and Construction</a></td></tr>
|
|
<tr><th class="docinfo-name">Date:</th>
|
|
<td>2006-09-11</td></tr>
|
|
<tr><th class="docinfo-name">Copyright:</th>
|
|
<td>Copyright David Abrahams, Jeremy Siek, and Thomas Witt 2003.</td></tr>
|
|
</tbody>
|
|
</table>
|
|
<!-- Distributed under the Boost -->
|
|
<!-- Software License, Version 1.0. (See accompanying -->
|
|
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
|
|
<table class="docutils field-list" frame="void" rules="none">
|
|
<col class="field-name" />
|
|
<col class="field-body" />
|
|
<tbody valign="top">
|
|
<tr class="field"><th class="field-name">abstract:</th><td class="field-body"><!-- Copyright David Abrahams 2006. Distributed under the Boost -->
|
|
<!-- Software License, Version 1.0. (See accompanying -->
|
|
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
|
|
The function output iterator adaptor makes it easier to create custom
|
|
output iterators. The adaptor takes a unary function and creates a
|
|
model of Output Iterator. Each item assigned to the output iterator is
|
|
passed as an argument to the unary function. The motivation for this
|
|
iterator is that creating a conforming output iterator is non-trivial,
|
|
particularly because the proper implementation usually requires a
|
|
proxy object.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<div class="contents topic" id="table-of-contents">
|
|
<p class="topic-title first">Table of Contents</p>
|
|
<ul class="simple">
|
|
<li><a class="reference internal" href="#header" id="id1">Header</a></li>
|
|
<li><a class="reference internal" href="#function-output-iterator-requirements" id="id2"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> requirements</a></li>
|
|
<li><a class="reference internal" href="#function-output-iterator-models" id="id3"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> models</a></li>
|
|
<li><a class="reference internal" href="#function-output-iterator-operations" id="id4"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> operations</a></li>
|
|
<li><a class="reference internal" href="#example" id="id5">Example</a></li>
|
|
</ul>
|
|
</div>
|
|
<!-- Copyright David Abrahams 2006. Distributed under the Boost -->
|
|
<!-- Software License, Version 1.0. (See accompanying -->
|
|
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
|
|
<div class="section" id="header">
|
|
<h1><a class="toc-backref" href="#id1">Header</a></h1>
|
|
<pre class="literal-block">
|
|
#include <boost/function_output_iterator.hpp>
|
|
</pre>
|
|
<pre class="literal-block">
|
|
template <class UnaryFunction>
|
|
class function_output_iterator {
|
|
public:
|
|
typedef std::output_iterator_tag iterator_category;
|
|
typedef void value_type;
|
|
typedef void difference_type;
|
|
typedef void pointer;
|
|
typedef void reference;
|
|
|
|
explicit function_output_iterator();
|
|
|
|
explicit function_output_iterator(const UnaryFunction& f);
|
|
|
|
/* see below */ operator*();
|
|
function_output_iterator& operator++();
|
|
function_output_iterator& operator++(int);
|
|
private:
|
|
UnaryFunction m_f; // exposition only
|
|
};
|
|
</pre>
|
|
</div>
|
|
<div class="section" id="function-output-iterator-requirements">
|
|
<h1><a class="toc-backref" href="#id2"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> requirements</a></h1>
|
|
<p><tt class="docutils literal"><span class="pre">UnaryFunction</span></tt> must be Assignable and Copy Constructible.</p>
|
|
</div>
|
|
<div class="section" id="function-output-iterator-models">
|
|
<h1><a class="toc-backref" href="#id3"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> models</a></h1>
|
|
<p><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> is a model of the Writable and
|
|
Incrementable Iterator concepts.</p>
|
|
</div>
|
|
<div class="section" id="function-output-iterator-operations">
|
|
<h1><a class="toc-backref" href="#id4"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt> operations</a></h1>
|
|
<p><tt class="docutils literal"><span class="pre">explicit</span> <span class="pre">function_output_iterator(const</span> <span class="pre">UnaryFunction&</span> <span class="pre">f</span> <span class="pre">=</span> <span class="pre">UnaryFunction());</span></tt></p>
|
|
<table class="docutils field-list" frame="void" rules="none">
|
|
<col class="field-name" />
|
|
<col class="field-body" />
|
|
<tbody valign="top">
|
|
<tr class="field"><th class="field-name">Effects:</th><td class="field-body">Constructs an instance of <tt class="docutils literal"><span class="pre">function_output_iterator</span></tt>
|
|
with <tt class="docutils literal"><span class="pre">m_f</span></tt> constructed from <tt class="docutils literal"><span class="pre">f</span></tt>.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p><tt class="docutils literal"><span class="pre">operator*();</span></tt></p>
|
|
<table class="docutils field-list" frame="void" rules="none">
|
|
<col class="field-name" />
|
|
<col class="field-body" />
|
|
<tbody valign="top">
|
|
<tr class="field"><th class="field-name">Returns:</th><td class="field-body">An object <tt class="docutils literal"><span class="pre">r</span></tt> of unspecified type such that <tt class="docutils literal"><span class="pre">r</span> <span class="pre">=</span> <span class="pre">t</span></tt>
|
|
is equivalent to <tt class="docutils literal"><span class="pre">m_f(t)</span></tt> for all <tt class="docutils literal"><span class="pre">t</span></tt>.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p><tt class="docutils literal"><span class="pre">function_output_iterator&</span> <span class="pre">operator++();</span></tt></p>
|
|
<table class="docutils field-list" frame="void" rules="none">
|
|
<col class="field-name" />
|
|
<col class="field-body" />
|
|
<tbody valign="top">
|
|
<tr class="field"><th class="field-name">Returns:</th><td class="field-body"><tt class="docutils literal"><span class="pre">*this</span></tt></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p><tt class="docutils literal"><span class="pre">function_output_iterator&</span> <span class="pre">operator++(int);</span></tt></p>
|
|
<table class="docutils field-list" frame="void" rules="none">
|
|
<col class="field-name" />
|
|
<col class="field-body" />
|
|
<tbody valign="top">
|
|
<tr class="field"><th class="field-name">Returns:</th><td class="field-body"><tt class="docutils literal"><span class="pre">*this</span></tt></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<!-- Copyright David Abrahams 2006. Distributed under the Boost -->
|
|
<!-- Software License, Version 1.0. (See accompanying -->
|
|
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
|
|
</div>
|
|
<div class="section" id="example">
|
|
<h1><a class="toc-backref" href="#id5">Example</a></h1>
|
|
<pre class="literal-block">
|
|
struct string_appender
|
|
{
|
|
string_appender(std::string& s)
|
|
: m_str(&s)
|
|
{}
|
|
|
|
void operator()(const std::string& x) const
|
|
{
|
|
*m_str += x;
|
|
}
|
|
|
|
std::string* m_str;
|
|
};
|
|
|
|
int main(int, char*[])
|
|
{
|
|
std::vector<std::string> x;
|
|
x.push_back("hello");
|
|
x.push_back(" ");
|
|
x.push_back("world");
|
|
x.push_back("!");
|
|
|
|
std::string s = "";
|
|
std::copy(x.begin(), x.end(),
|
|
boost::make_function_output_iterator(string_appender(s)));
|
|
|
|
std::cout << s << std::endl;
|
|
|
|
return 0;
|
|
}
|
|
</pre>
|
|
</div>
|
|
</div>
|
|
<div class="footer">
|
|
<hr class="footer" />
|
|
<a class="reference external" href="function_output_iterator.rst">View document source</a>.
|
|
Generated by <a class="reference external" href="http://docutils.sourceforge.net/">Docutils</a> from <a class="reference external" href="http://docutils.sourceforge.net/rst.html">reStructuredText</a> source.
|
|
|
|
</div>
|
|
</body>
|
|
</html>
|