1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>regex_traits</title> 5<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../index.html" title="Boost.Regex 5.1.4"> 8<link rel="up" href="../ref.html" title="Reference"> 9<link rel="prev" href="error_type.html" title="error_type"> 10<link rel="next" href="non_std_strings.html" title="Interfacing With Non-Standard String Types"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="error_type.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ref.html"><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="non_std_strings.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="boost_regex.ref.regex_traits"></a><a class="link" href="regex_traits.html" title="regex_traits">regex_traits</a> 28</h3></div></div></div> 29<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span> 30 31<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">implementationT</span> <span class="special">=</span> <span class="identifier">sensible_default_choice</span><span class="special">></span> 32<span class="keyword">struct</span> <span class="identifier">regex_traits</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">implementationT</span> 33<span class="special">{</span> 34 <span class="identifier">regex_traits</span><span class="special">()</span> <span class="special">:</span> <span class="identifier">implementationT</span><span class="special">()</span> <span class="special">{}</span> 35<span class="special">};</span> 36 37<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span> 38<span class="keyword">struct</span> <span class="identifier">c_regex_traits</span><span class="special">;</span> 39 40<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span> 41<span class="keyword">class</span> <span class="identifier">cpp_regex_traits</span><span class="special">;</span> 42 43<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span> 44<span class="keyword">class</span> <span class="identifier">w32_regex_traits</span><span class="special">;</span> 45 46<span class="special">}</span> <span class="comment">// namespace boost</span> 47</pre> 48<h5> 49<a name="boost_regex.ref.regex_traits.h0"></a> 50 <span class="phrase"><a name="boost_regex.ref.regex_traits.description"></a></span><a class="link" href="regex_traits.html#boost_regex.ref.regex_traits.description">Description</a> 51 </h5> 52<p> 53 The class <code class="computeroutput"><span class="identifier">regex_traits</span></code> is 54 just a thin wrapper around an actual implementation class, which may be one 55 of: 56 </p> 57<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 58<li class="listitem"> 59 <code class="computeroutput"><span class="identifier">c_regex_traits</span></code>: this 60 class is deprecated, it wraps the C locale, and is used as the default 61 implementation when the platform is not Win32, and the C++ locale is 62 not available. 63 </li> 64<li class="listitem"> 65 <code class="computeroutput"><span class="identifier">cpp_regex_traits</span></code>: the 66 default traits class for non-Win32 platforms, allows the regex class 67 to be imbued with a std::locale instance. 68 </li> 69<li class="listitem"> 70 <code class="computeroutput"><span class="identifier">w32_regex_traits</span></code>: the 71 default traits class implementation on Win32 platforms, allows the regex 72 class to be imbued with an LCID. 73 </li> 74</ul></div> 75<p> 76 The default behavior can be altered by defining one of the following configuration 77 macros in <a href="../../../../../../boost/regex/user.hpp" target="_top">boost/regex/user.hpp</a> 78 </p> 79<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 80<li class="listitem"> 81 BOOST_REGEX_USE_C_LOCALE: makes <code class="computeroutput"><span class="identifier">c_regex_traits</span></code> 82 the default. 83 </li> 84<li class="listitem"> 85 BOOST_REGEX_USE_CPP_LOCALE: makes <code class="computeroutput"><span class="identifier">cpp_regex_traits</span></code> 86 the default. 87 </li> 88</ul></div> 89<p> 90 All these traits classes fulfil the <a class="link" href="concepts/traits_concept.html" title="Traits Class Requirements">traits 91 class requirements</a>. 92 </p> 93</div> 94<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 95<td align="left"></td> 96<td align="right"><div class="copyright-footer">Copyright © 1998-2013 John Maddock<p> 97 Distributed under the Boost Software License, Version 1.0. (See accompanying 98 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>) 99 </p> 100</div></td> 101</tr></table> 102<hr> 103<div class="spirit-nav"> 104<a accesskey="p" href="error_type.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ref.html"><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="non_std_strings.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 105</div> 106</body> 107</html> 108
