mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-10-30 04:20:22 -04:00
110 lines
4.2 KiB
HTML
110 lines
4.2 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 0.11: http://docutils.sourceforge.net/" />
|
||
|
|
<title>Iterator Traits</title>
|
||
|
|
<meta name="author" content="David Abrahams" />
|
||
|
|
<meta name="organization" content="Boost Consulting" />
|
||
|
|
<meta name="date" content="$Date$" />
|
||
|
|
<meta name="copyright" content="Copyright David Abrahams 2004." />
|
||
|
|
<link rel="stylesheet" href="../../../rst.css" type="text/css" />
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="document" id="iterator-traits">
|
||
|
|
<h1 class="title">Iterator Traits</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</td></tr>
|
||
|
|
<tr><th class="docinfo-name">Contact:</th>
|
||
|
|
<td><a class="first last reference external" href="mailto:dave@boost-consulting.com">dave@boost-consulting.com</a></td></tr>
|
||
|
|
<tr><th class="docinfo-name">Organization:</th>
|
||
|
|
<td><a class="first last reference external" href="http://www.boost-consulting.com">Boost Consulting</a></td></tr>
|
||
|
|
<tr><th class="docinfo-name">Date:</th>
|
||
|
|
<td>$Date$</td></tr>
|
||
|
|
<tr><th class="docinfo-name">Copyright:</th>
|
||
|
|
<td>Copyright David Abrahams 2004.</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">Header <tt class="docutils literal"><boost/iterator/iterator_traits.hpp></tt> provides
|
||
|
|
the ability to access an iterator's associated types using
|
||
|
|
MPL-compatible <a class="reference external" href="../../mpl/doc/index.html#metafunctions">metafunctions</a>.</td>
|
||
|
|
</tr>
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
<div class="section" id="overview">
|
||
|
|
<h1>Overview</h1>
|
||
|
|
<p><tt class="docutils literal"><span class="pre">std::iterator_traits</span></tt> provides access to five associated types
|
||
|
|
of any iterator: its <tt class="docutils literal">value_type</tt>, <tt class="docutils literal">reference</tt>, <tt class="docutils literal">pointer</tt>,
|
||
|
|
<tt class="docutils literal">iterator_category</tt>, and <tt class="docutils literal">difference_type</tt>. Unfortunately,
|
||
|
|
such a "multi-valued" traits template can be difficult to use in a
|
||
|
|
metaprogramming context. <tt class="docutils literal"><boost/iterator/iterator_traits.hpp></tt>
|
||
|
|
provides access to these types using a standard <a class="reference external" href="../../mpl/doc/index.html#metafunctions">metafunctions</a>.</p>
|
||
|
|
</div>
|
||
|
|
<div class="section" id="summary">
|
||
|
|
<h1>Summary</h1>
|
||
|
|
<p>Header <tt class="docutils literal"><boost/iterator/iterator_traits.hpp></tt>:</p>
|
||
|
|
<pre class="literal-block">
|
||
|
|
template <class Iterator>
|
||
|
|
struct iterator_value
|
||
|
|
{
|
||
|
|
typedef typename
|
||
|
|
std::iterator_traits<Iterator>::value_type
|
||
|
|
type;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <class Iterator>
|
||
|
|
struct iterator_reference
|
||
|
|
{
|
||
|
|
typedef typename
|
||
|
|
std::iterator_traits<Iterator>::reference
|
||
|
|
type;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
template <class Iterator>
|
||
|
|
struct iterator_pointer
|
||
|
|
{
|
||
|
|
typedef typename
|
||
|
|
std::iterator_traits<Iterator>::pointer
|
||
|
|
type;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <class Iterator>
|
||
|
|
struct iterator_difference
|
||
|
|
{
|
||
|
|
typedef typename
|
||
|
|
detail::iterator_traits<Iterator>::difference_type
|
||
|
|
type;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <class Iterator>
|
||
|
|
struct iterator_category
|
||
|
|
{
|
||
|
|
typedef typename
|
||
|
|
detail::iterator_traits<Iterator>::iterator_category
|
||
|
|
type;
|
||
|
|
};
|
||
|
|
</pre>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div class="footer">
|
||
|
|
<hr class="footer" />
|
||
|
|
<a class="reference external" href="iterator_traits.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>
|