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class="refentry"> 27<a name="boost.program_options.basic_option"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Class template basic_option</span></h2> 30<p>boost::program_options::basic_option</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../program_options/reference.html#header.boost.program_options.option_hpp" title="Header <boost/program_options/option.hpp>">boost/program_options/option.hpp</a>> 34 35</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> charT<span class="special">></span> 36<span class="keyword">class</span> <a class="link" href="basic_option.html" title="Class template basic_option">basic_option</a> <span class="special">{</span> 37<span class="keyword">public</span><span class="special">:</span> 38 <span class="comment">// <a class="link" href="basic_option.html#boost.program_options.basic_optionconstruct-copy-destruct">construct/copy/destruct</a></span> 39 <a class="link" href="basic_option.html#id-1_3_31_9_6_1_1_1_10-bb"><span class="identifier">basic_option</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 40 <a class="link" href="basic_option.html#id-1_3_31_9_6_1_1_1_11-bb"><span class="identifier">basic_option</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">></span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 41 42 <span class="comment">// <a class="link" href="basic_option.html#boost.program_options.basic_optionpublic-data-members">public data members</a></span> 43 <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a class="link" href="basic_option.html#boost.program_options.basic_option.string_key"><span class="identifier">string_key</span></a><span class="special">;</span> 44 <span class="keyword">int</span> <a class="link" href="basic_option.html#boost.program_options.basic_option.position_key"><span class="identifier">position_key</span></a><span class="special">;</span> 45 <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span> <span class="identifier">charT</span> <span class="special">></span> <span class="special">></span> <a class="link" href="basic_option.html#boost.program_options.basic_option.value"><span class="identifier">value</span></a><span class="special">;</span> 46 <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span> <span class="identifier">charT</span> <span class="special">></span> <span class="special">></span> <a class="link" href="basic_option.html#boost.program_options.basic_option.original_tokens"><span class="identifier">original_tokens</span></a><span class="special">;</span> 47 <span class="keyword">bool</span> <a class="link" href="basic_option.html#boost.program_options.basic_option.unregistered"><span class="identifier">unregistered</span></a><span class="special">;</span> 48 <span class="keyword">bool</span> <a class="link" href="basic_option.html#boost.program_options.basic_option.case_insensitive"><span class="identifier">case_insensitive</span></a><span class="special">;</span> 49<span class="special">}</span><span class="special">;</span></pre></div> 50<div class="refsect1"> 51<a name="id-1.3.31.9.7.3.4"></a><h2>Description</h2> 52<p>Option found in input source. Contains a key and a value. The key, in turn, can be a string (name of an option), or an integer (position in input source) -- in case no name is specified. The latter is only possible for command line. The template parameter specifies the type of char used for storing the option's value. </p> 53<div class="refsect2"> 54<a name="id-1.3.31.9.7.3.4.3"></a><h3> 55<a name="boost.program_options.basic_optionconstruct-copy-destruct"></a><code class="computeroutput">basic_option</code> 56 public 57 construct/copy/destruct</h3> 58<div class="orderedlist"><ol class="orderedlist" type="1"> 59<li class="listitem"><pre class="literallayout"><a name="id-1_3_31_9_6_1_1_1_10-bb"></a><span class="identifier">basic_option</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li> 60<li class="listitem"><pre class="literallayout"><a name="id-1_3_31_9_6_1_1_1_11-bb"></a><span class="identifier">basic_option</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> xstring_key<span class="special">,</span> 61 <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">></span> <span class="special">&</span> xvalue<span class="special">)</span><span class="special">;</span></pre></li> 62</ol></div> 63</div> 64<div class="refsect2"> 65<a name="id-1.3.31.9.7.3.4.4"></a><h3> 66<a name="boost.program_options.basic_optionpublic-data-members"></a><code class="computeroutput">basic_option</code> 67 public 68 public data members</h3> 69<div class="orderedlist"><ol class="orderedlist" type="1"> 70<li class="listitem"> 71<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a name="boost.program_options.basic_option.string_key"></a><span class="identifier">string_key</span><span class="special">;</span></pre> 72<p>String key of this option. Intentionally independent of the template parameter. </p> 73</li> 74<li class="listitem"> 75<pre class="literallayout"><span class="keyword">int</span> <a name="boost.program_options.basic_option.position_key"></a><span class="identifier">position_key</span><span class="special">;</span></pre> 76<p>Position key of this option. All options without an explicit name are sequentially numbered starting from 0. If an option has explicit name, 'position_key' is equal to -1. It is possible that both position_key and string_key is specified, in case name is implicitly added. </p> 77</li> 78<li class="listitem"> 79<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span> <span class="identifier">charT</span> <span class="special">></span> <span class="special">></span> <a name="boost.program_options.basic_option.value"></a><span class="identifier">value</span><span class="special">;</span></pre> 80<p>Option's value </p> 81</li> 82<li class="listitem"> 83<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span> <span class="identifier">charT</span> <span class="special">></span> <span class="special">></span> <a name="boost.program_options.basic_option.original_tokens"></a><span class="identifier">original_tokens</span><span class="special">;</span></pre> 84<p>The original unchanged tokens this option was created from. </p> 85</li> 86<li class="listitem"> 87<pre class="literallayout"><span class="keyword">bool</span> <a name="boost.program_options.basic_option.unregistered"></a><span class="identifier">unregistered</span><span class="special">;</span></pre> 88<p>True if option was not recognized. In that case, 'string_key' and 'value' are results of purely syntactic parsing of source. The original tokens can be recovered from the "original_tokens" member. </p> 89</li> 90<li class="listitem"> 91<pre class="literallayout"><span class="keyword">bool</span> <a name="boost.program_options.basic_option.case_insensitive"></a><span class="identifier">case_insensitive</span><span class="special">;</span></pre> 92<p>True if string_key has to be handled case insensitive. </p> 93</li> 94</ol></div> 95</div> 96</div> 97</div> 98<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 99<td align="left"></td> 100<td align="right"><div class="copyright-footer">Copyright © 2002-2004 Vladimir Prus<p>Distributed under the Boost Software License, Version 1.0. 101 (See accompanying file <code class="filename">LICENSE_1_0.txt</code> or copy at 102 <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 103 </p> 104</div></td> 105</tr></table> 106<hr> 107<div class="spirit-nav"> 108<a accesskey="p" href="validation_error.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../program_options/reference.html#header.boost.program_options.option_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="duplicate_option_error.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 109</div> 110</body> 111</html> 112
