<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Struct template null_regex_traits</title> <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../xpressive/reference.html#header.boost.xpressive.traits.null_regex_traits_hpp" title="Header <boost/xpressive/traits/null_regex_traits.hpp>"> <link rel="prev" href="has_fold_case_cpp_regex_id1536894.html" title="Struct has_fold_case<cpp_regex_traits< char >>"> <link rel="next" href="../../BOOST_PROTO_FUSION_V2.html" title="Macro BOOST_PROTO_FUSION_V2"> </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" 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name="boost.xpressive.null_regex_traits"></a><div class="titlepage"></div> <div class="refnamediv"> <h2><span class="refentrytitle">Struct template null_regex_traits</span></h2> <p>boost::xpressive::null_regex_traits — stub regex_traits for non-char data </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: <<a class="link" href="../../xpressive/reference.html#header.boost.xpressive.traits.null_regex_traits_hpp" title="Header <boost/xpressive/traits/null_regex_traits.hpp>">boost/xpressive/traits/null_regex_traits.hpp</a>> </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Elem<span class="special">></span> <span class="keyword">struct</span> <a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a> <span class="special">{</span> <span class="comment">// types</span> <span class="keyword">typedef</span> <span class="identifier">Elem</span> <a name="boost.xpressive.null_regex_traits.char_type"></a><span class="identifier">char_type</span><span class="special">;</span> <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">char_type</span> <span class="special">></span> <a name="boost.xpressive.null_regex_traits.string_type"></a><span class="identifier">string_type</span><span class="special">;</span> <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="boost.xpressive.null_regex_traits.locale_type"></a><span class="identifier">locale_type</span><span class="special">;</span> <span class="keyword">typedef</span> <span class="keyword">int</span> <a name="boost.xpressive.null_regex_traits.char_class_type"></a><span class="identifier">char_class_type</span><span class="special">;</span> <span class="keyword">typedef</span> <a class="link" href="regex_traits_version_1_tag.html" title="Struct regex_traits_version_1_tag">regex_traits_version_1_tag</a> <a name="boost.xpressive.null_regex_traits.version_tag"></a><span class="identifier">version_tag</span><span class="special">;</span> <span class="comment">// <a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traitsconstruct-copy-destruct">construct/copy/destruct</a></span> <a class="link" href="null_regex_traits.html#id1537046-bb"><span class="identifier">null_regex_traits</span></a><span class="special">(</span><a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> <span class="special">=</span> <span class="identifier">locale_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> <span class="comment">// <a class="link" href="null_regex_traits.html#id1536963-bb">public member functions</a></span> <span class="keyword">bool</span> <a class="link" href="null_regex_traits.html#id1536967-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a><span class="special"><</span> <span class="identifier">char_type</span> <span class="special">></span> <span class="keyword">const</span> <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="null_regex_traits.html#id1536993-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a><span class="special"><</span> <span class="identifier">char_type</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="identifier">char_type</span> <a class="link" href="null_regex_traits.html#id1537020-bb"><span class="identifier">widen</span></a><span class="special">(</span><span class="keyword">char</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="comment">// <a class="link" href="null_regex_traits.html#id1537060-bb">public static functions</a></span> <span class="keyword">static</span> <span class="keyword">unsigned</span> <span class="keyword">char</span> <a class="link" href="null_regex_traits.html#id1537064-bb"><span class="identifier">hash</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <span class="identifier">char_type</span> <a class="link" href="null_regex_traits.html#id1537092-bb"><span class="identifier">translate</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <span class="identifier">char_type</span> <a class="link" href="null_regex_traits.html#id1537118-bb"><span class="identifier">translate_nocase</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="null_regex_traits.html#id1537145-bb"><span class="identifier">in_range</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">char_type</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="null_regex_traits.html#id1537192-bb"><span class="identifier">in_range_nocase</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">char_type</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">string_type</span> <a class="link" href="null_regex_traits.html#id1537244-bb"><span class="identifier">transform</span></a><span class="special">(</span><span class="identifier">FwdIter</span><span class="special">,</span> <span class="identifier">FwdIter</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">string_type</span> <a class="link" href="null_regex_traits.html#id1537283-bb"><span class="identifier">transform_primary</span></a><span class="special">(</span><span class="identifier">FwdIter</span><span class="special">,</span> <span class="identifier">FwdIter</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">string_type</span> <a class="link" href="null_regex_traits.html#id1537324-bb"><span class="identifier">lookup_collatename</span></a><span class="special">(</span><span class="identifier">FwdIter</span><span class="special">,</span> <span class="identifier">FwdIter</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">char_class_type</span> <a class="link" href="null_regex_traits.html#id1537364-bb"><span class="identifier">lookup_classname</span></a><span class="special">(</span><span class="identifier">FwdIter</span><span class="special">,</span> <span class="identifier">FwdIter</span><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="null_regex_traits.html#id1537417-bb"><span class="identifier">isctype</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">char_class_type</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <span class="keyword">int</span> <a class="link" href="null_regex_traits.html#id1537454-bb"><span class="identifier">value</span></a><span class="special">(</span><span class="identifier">char_type</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> <a class="link" href="null_regex_traits.html#id1537490-bb"><span class="identifier">imbue</span></a><span class="special">(</span><a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a><span class="special">)</span><span class="special">;</span> <span class="keyword">static</span> <a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> <a class="link" href="null_regex_traits.html#id1537520-bb"><span class="identifier">getloc</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="id3217986"></a><h2>Description</h2> <div class="refsect2"> <a name="id3217990"></a><h3> <a name="boost.xpressive.null_regex_traitsconstruct-copy-destruct"></a><code class="computeroutput">null_regex_traits</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> <pre class="literallayout"><a name="id1537046-bb"></a><span class="identifier">null_regex_traits</span><span class="special">(</span><a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> <span class="special">=</span> <span class="identifier">locale_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre> <p>Initialize a null_regex_traits object. </p> </li></ol></div> </div> <div class="refsect2"> <a name="id3218068"></a><h3> <a name="id1536963-bb"></a><code class="computeroutput">null_regex_traits</code> public member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout"><span class="keyword">bool</span> <a name="id1536967-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a><span class="special"><</span> <span class="identifier">char_type</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span> that<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <p>Checks two null_regex_traits objects for equality</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Returns:</span></p></td> <td><p>true. </p></td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">bool</span> <a name="id1536993-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a><span class="special"><</span> <span class="identifier">char_type</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span> that<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <p>Checks two null_regex_traits objects for inequality</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Returns:</span></p></td> <td><p>false. </p></td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="identifier">char_type</span> <a name="id1537020-bb"></a><span class="identifier">widen</span><span class="special">(</span><span class="keyword">char</span> ch<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <p>Convert a char to a Elem</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>The source character. </p></td> </tr></tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>Elem(ch). </p></td> </tr> </tbody> </table></div> </li> </ol></div> </div> <div class="refsect2"> <a name="id3218365"></a><h3> <a name="id1537060-bb"></a><code class="computeroutput">null_regex_traits</code> public static functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="keyword">unsigned</span> <span class="keyword">char</span> <a name="id1537064-bb"></a><span class="identifier">hash</span><span class="special">(</span><span class="identifier">char_type</span> ch<span class="special">)</span><span class="special">;</span></pre> <p>Returns a hash value for a Elem in the range [0, UCHAR_MAX]</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>The source character. </p></td> </tr></tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>a value between 0 and UCHAR_MAX, inclusive. </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="identifier">char_type</span> <a name="id1537092-bb"></a><span class="identifier">translate</span><span class="special">(</span><span class="identifier">char_type</span> ch<span class="special">)</span><span class="special">;</span></pre> <p>No-op</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>The source character. </p></td> </tr></tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>ch </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="identifier">char_type</span> <a name="id1537118-bb"></a><span class="identifier">translate_nocase</span><span class="special">(</span><span class="identifier">char_type</span> ch<span class="special">)</span><span class="special">;</span></pre> <p>No-op</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>The source character. </p></td> </tr></tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>ch </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="keyword">bool</span> <a name="id1537145-bb"></a><span class="identifier">in_range</span><span class="special">(</span><span class="identifier">char_type</span> first<span class="special">,</span> <span class="identifier">char_type</span> last<span class="special">,</span> <span class="identifier">char_type</span> ch<span class="special">)</span><span class="special">;</span></pre> <p>Checks to see if a character is within a character range.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>The source character. </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">first</code></span></p></td> <td><p>The bottom of the range, inclusive. </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">last</code></span></p></td> <td><p>The top of the range, inclusive. </p></td> </tr> </tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>first <= ch && ch <= last. </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="keyword">bool</span> <a name="id1537192-bb"></a><span class="identifier">in_range_nocase</span><span class="special">(</span><span class="identifier">char_type</span> first<span class="special">,</span> <span class="identifier">char_type</span> last<span class="special">,</span> <span class="identifier">char_type</span> ch<span class="special">)</span><span class="special">;</span></pre> <p>Checks to see if a character is within a character range.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>The source character. </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">first</code></span></p></td> <td><p>The bottom of the range, inclusive. </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">last</code></span></p></td> <td><p>The top of the range, inclusive. </p></td> </tr> </tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>first <= ch && ch <= last. </p></td> </tr> <tr> <td><p><span class="term">Notes:</span></p></td> <td><p>Since the null_regex_traits does not do case-folding, this function is equivalent to in_range(). </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">string_type</span> <a name="id1537244-bb"></a><span class="identifier">transform</span><span class="special">(</span><span class="identifier">FwdIter</span> begin<span class="special">,</span> <span class="identifier">FwdIter</span> end<span class="special">)</span><span class="special">;</span></pre> <p>Returns a sort key for the character sequence designated by the iterator range [F1, F2) such that if the character sequence [G1, G2) sorts before the character sequence [H1, H2) then v.transform(G1, G2) < v.transform(H1, H2).</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Notes:</span></p></td> <td><p>Not currently used </p></td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">string_type</span> <a name="id1537283-bb"></a><span class="identifier">transform_primary</span><span class="special">(</span><span class="identifier">FwdIter</span> begin<span class="special">,</span> <span class="identifier">FwdIter</span> end<span class="special">)</span><span class="special">;</span></pre> <p>Returns a sort key for the character sequence designated by the iterator range [F1, F2) such that if the character sequence [G1, G2) sorts before the character sequence [H1, H2) when character case is not considered then v.transform_primary(G1, G2) < v.transform_primary(H1, H2).</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Notes:</span></p></td> <td><p>Not currently used </p></td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">string_type</span> <a name="id1537324-bb"></a><span class="identifier">lookup_collatename</span><span class="special">(</span><span class="identifier">FwdIter</span> begin<span class="special">,</span> <span class="identifier">FwdIter</span> end<span class="special">)</span><span class="special">;</span></pre> <p>Returns a sequence of characters that represents the collating element consisting of the character sequence designated by the iterator range [F1, F2). Returns an empty string if the character sequence is not a valid collating element.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Notes:</span></p></td> <td><p>Not currently used </p></td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FwdIter<span class="special">></span> <span class="keyword">static</span> <span class="identifier">char_class_type</span> <a name="id1537364-bb"></a><span class="identifier">lookup_classname</span><span class="special">(</span><span class="identifier">FwdIter</span> begin<span class="special">,</span> <span class="identifier">FwdIter</span> end<span class="special">,</span> <span class="keyword">bool</span> icase<span class="special">)</span><span class="special">;</span></pre> <p>The null_regex_traits does not have character classifications, so lookup_classname() is unused.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><code class="computeroutput">begin</code></span></p></td> <td><p>not used </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">end</code></span></p></td> <td><p>not used </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">icase</code></span></p></td> <td><p>not used </p></td> </tr> </tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>static_cast<char_class_type>(0) </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="keyword">bool</span> <a name="id1537417-bb"></a><span class="identifier">isctype</span><span class="special">(</span><span class="identifier">char_type</span> ch<span class="special">,</span> <span class="identifier">char_class_type</span> mask<span class="special">)</span><span class="special">;</span></pre> <p>The null_regex_traits does not have character classifications, so isctype() is unused.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>not used </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">mask</code></span></p></td> <td><p>not used </p></td> </tr> </tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>false </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <span class="keyword">int</span> <a name="id1537454-bb"></a><span class="identifier">value</span><span class="special">(</span><span class="identifier">char_type</span> ch<span class="special">,</span> <span class="keyword">int</span> radix<span class="special">)</span><span class="special">;</span></pre> <p>The null_regex_traits recognizes no elements as digits, so value() is unused.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><code class="computeroutput">ch</code></span></p></td> <td><p>not used </p></td> </tr> <tr> <td><p><span class="term"><code class="computeroutput">radix</code></span></p></td> <td><p>not used </p></td> </tr> </tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>-1 </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> <a name="id1537490-bb"></a><span class="identifier">imbue</span><span class="special">(</span><a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> loc<span class="special">)</span><span class="special">;</span></pre> <p>Not used</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term">Parameters:</span></p></td> <td><div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term"><code class="computeroutput">loc</code></span></p></td> <td><p>not used </p></td> </tr></tbody> </table></div></td> </tr> <tr> <td><p><span class="term">Returns:</span></p></td> <td><p>loc </p></td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">static</span> <a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traits.locale_type">locale_type</a> <a name="id1537520-bb"></a><span class="identifier">getloc</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> <p>Returns locale_type().</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Returns:</span></p></td> <td><p>locale_type() </p></td> </tr></tbody> </table></div> </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 © 2007 Eric Niebler<p> Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt 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="has_fold_case_cpp_regex_id1536894.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../xpressive/reference.html#header.boost.xpressive.traits.null_regex_traits_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="../../BOOST_PROTO_FUSION_V2.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>