Sophie

Sophie

distrib > Mageia > 6 > armv5tl > by-pkgid > 37eb773c4f50677290a7937043b43933 > files > 1434

boost-devel-doc-1.60.0-6.1.mga6.noarch.rpm

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Class variable_value</title>
<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset">
<link rel="up" href="../../program_options/reference.html#header.boost.program_options.variables_map_hpp" title="Header &lt;boost/program_options/variables_map.hpp&gt;">
<link rel="prev" href="abstract_variables_map.html" title="Class abstract_variables_map">
<link rel="next" href="variables_map.html" title="Class variables_map">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td>
<td align="center"><a href="../../../../index.html">Home</a></td>
<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
<td align="center"><a href="../../../../more/index.htm">More</a></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="abstract_variables_map.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../program_options/reference.html#header.boost.program_options.variables_map_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="variables_map.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
</div>
<div class="refentry">
<a name="boost.program_options.variable_value"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2><span class="refentrytitle">Class variable_value</span></h2>
<p>boost::program_options::variable_value</p>
</div>
<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../program_options/reference.html#header.boost.program_options.variables_map_hpp" title="Header &lt;boost/program_options/variables_map.hpp&gt;">boost/program_options/variables_map.hpp</a>&gt;

</span>
<span class="keyword">class</span> <a class="link" href="variable_value.html" title="Class variable_value">variable_value</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// <a class="link" href="variable_value.html#boost.program_options.variable_valueconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="variable_value.html#idm45507036109392-bb"><span class="identifier">variable_value</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="variable_value.html#idm45507036109104-bb"><span class="identifier">variable_value</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">any</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="variable_value.html#idm45507109742816-bb">friend functions</a></span>
  <span class="keyword">friend</span> <span class="identifier">BOOST_PROGRAM_OPTIONS_DECL</span> <span class="keyword">void</span> 
  <a class="link" href="variable_value.html#idm45507109742256-bb"><span class="identifier">store</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="basic_parsed_options.html" title="Class template basic_parsed_options">basic_parsed_options</a><span class="special">&lt;</span> <span class="keyword">char</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <a class="link" href="variables_map.html" title="Class variables_map">variables_map</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="variable_value.html#idm45507046324304-bb">public member functions</a></span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="keyword">const</span> <span class="identifier">T</span> <span class="special">&amp;</span> <a class="link" href="variable_value.html#idm45507046323744-bb"><span class="identifier">as</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="identifier">T</span> <span class="special">&amp;</span> <a class="link" href="variable_value.html#idm45507046330896-bb"><span class="identifier">as</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="variable_value.html#idm45507046321968-bb"><span class="identifier">empty</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="variable_value.html#idm45507046320544-bb"><span class="identifier">defaulted</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">any</span> <span class="special">&amp;</span> <a class="link" href="variable_value.html#idm45507044051392-bb"><span class="identifier">value</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">boost</span><span class="special">::</span><span class="identifier">any</span> <span class="special">&amp;</span> <a class="link" href="variable_value.html#idm45507044049840-bb"><span class="identifier">value</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idm45555213882960"></a><h2>Description</h2>
<p>Class holding value of option. Contains details about how the value is set and allows to conveniently obtain the value. </p>
<div class="refsect2">
<a name="idm45555213882144"></a><h3>
<a name="boost.program_options.variable_valueconstruct-copy-destruct"></a><code class="computeroutput">variable_value</code> 
        public
       construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem"><pre class="literallayout"><a name="idm45507036109392-bb"></a><span class="identifier">variable_value</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><a name="idm45507036109104-bb"></a><span class="identifier">variable_value</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">any</span> <span class="special">&amp;</span> xv<span class="special">,</span> <span class="keyword">bool</span> xdefaulted<span class="special">)</span><span class="special">;</span></pre></li>
</ol></div>
</div>
<div class="refsect2">
<a name="idm45555213868048"></a><h3>
<a name="idm45507109742816-bb"></a><code class="computeroutput">variable_value</code> friend functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="identifier">BOOST_PROGRAM_OPTIONS_DECL</span> <span class="keyword">void</span> 
<a name="idm45507109742256-bb"></a><span class="identifier">store</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="basic_parsed_options.html" title="Class template basic_parsed_options">basic_parsed_options</a><span class="special">&lt;</span> <span class="keyword">char</span> <span class="special">&gt;</span> <span class="special">&amp;</span> options<span class="special">,</span> <a class="link" href="variables_map.html" title="Class variables_map">variables_map</a> <span class="special">&amp;</span> m<span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span></pre>
<p>Stores in 'm' all options that are defined in 'options'. If 'm' already has a non-defaulted value of an option, that value is not changed, even if 'options' specify some value. </p>
</li></ol></div>
</div>
<div class="refsect2">
<a name="idm45555213852032"></a><h3>
<a name="idm45507046324304-bb"></a><code class="computeroutput">variable_value</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="keyword">const</span> <span class="identifier">T</span> <span class="special">&amp;</span> <a name="idm45507046323744-bb"></a><span class="identifier">as</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>If stored value if of type T, returns that value. Otherwise, throws boost::bad_any_cast exception. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="identifier">T</span> <span class="special">&amp;</span> <a name="idm45507046330896-bb"></a><span class="identifier">as</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idm45507046321968-bb"></a><span class="identifier">empty</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns true if no value is stored. </li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idm45507046320544-bb"></a><span class="identifier">defaulted</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns true if the value was not explicitly given, but has default value. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">any</span> <span class="special">&amp;</span> <a name="idm45507044051392-bb"></a><span class="identifier">value</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the contained value. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">any</span> <span class="special">&amp;</span> <a name="idm45507044049840-bb"></a><span class="identifier">value</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Returns the contained value. </p>
</li>
</ol></div>
</div>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2002-2004 Vladimir Prus<p>Distributed under the Boost Software License, Version 1.0.
      (See accompanying file <code class="filename">LICENSE_1_0.txt</code> or copy at 
      <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="abstract_variables_map.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../program_options/reference.html#header.boost.program_options.variables_map_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="variables_map.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
</div>
</body>
</html>