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<tr class="memitem:a01541"><td class="memItemLeft" align="right" valign="top">  </td><td class="memItemRight" valign="bottom"><a class="el" href="a01541.html">std</a></td></tr>
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5.1 Regular Expression Syntax Options</h2></td></tr>
<tr class="memitem:a7156b0c6206290633e6793d43a3d9c3d"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a7156b0c6206290633e6793d43a3d9c3d">std::regex_constants::__syntax_option</a> { <br />
  <b>_S_icase</b>,
<b>_S_nosubs</b>,
<b>_S_optimize</b>,
<b>_S_collate</b>,
<br />
  <b>_S_ECMAScript</b>,
<b>_S_basic</b>,
<b>_S_extended</b>,
<b>_S_awk</b>,
<br />
  <b>_S_grep</b>,
<b>_S_egrep</b>,
<b>_S_polynomial</b>,
<b>_S_syntax_last</b>
<br />
}</td></tr>
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<tr class="memitem:a510caedb3e640b81620023a85c1280bb"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a510caedb3e640b81620023a85c1280bb">std::regex_constants::syntax_option_type</a> : unsigned int </td></tr>
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<tr class="memitem:a21c1f7289167aa3d0a40b24e39a80f00"><td class="memItemLeft" align="right" valign="top">_GLIBCXX17_INLINE constexpr syntax_option_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a21c1f7289167aa3d0a40b24e39a80f00">std::regex_constants::icase</a></td></tr>
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<tr class="memitem:a29777ae2dd2358f4faf29cb604c3fb85"><td class="memItemLeft" align="right" valign="top">_GLIBCXX17_INLINE constexpr syntax_option_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a29777ae2dd2358f4faf29cb604c3fb85">std::regex_constants::nosubs</a></td></tr>
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<tr class="memitem:a77f83de09c72048a75a66344f0bfb2f3"><td class="memItemLeft" align="right" valign="top">_GLIBCXX17_INLINE constexpr syntax_option_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a77f83de09c72048a75a66344f0bfb2f3">std::regex_constants::optimize</a></td></tr>
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<tr class="memitem:a9a757dec2b2f903771da2427c292804a"><td class="memItemLeft" align="right" valign="top">_GLIBCXX17_INLINE constexpr syntax_option_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a9a757dec2b2f903771da2427c292804a">std::regex_constants::collate</a></td></tr>
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5.2 Matching Rules</h2></td></tr>
<tr><td class="ititle" colspan="2"><p><a class="anchor" id="amgrpbc1211d7fd4f9da3e5632a80e9bc3f32"></a>Matching a regular expression against a sequence of characters [first, last) proceeds according to the rules of the grammar specified for the regular expression object, modified according to the effects listed below for any bitmask elements set. </p>
</td></tr>
<tr class="memitem:a37dcdeaf2d2a34d88f1ec2defc7ba041"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a37dcdeaf2d2a34d88f1ec2defc7ba041">std::regex_constants::__match_flag</a> { <br />
  <b>_S_not_bol</b>,
<b>_S_not_eol</b>,
<b>_S_not_bow</b>,
<b>_S_not_eow</b>,
<br />
  <b>_S_any</b>,
<b>_S_not_null</b>,
<b>_S_continuous</b>,
<b>_S_prev_avail</b>,
<br />
  <b>_S_sed</b>,
<b>_S_no_copy</b>,
<b>_S_first_only</b>,
<b>_S_match_flag_last</b>
<br />
}</td></tr>
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<tr class="memitem:aaa717c7c94d1075dfb06f79feb4ca11c"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#aaa717c7c94d1075dfb06f79feb4ca11c">std::regex_constants::match_flag_type</a> : unsigned int </td></tr>
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<tr class="memitem:ac070d8adb9f48dcfad7f69f4f2373708"><td class="memItemLeft" align="right" valign="top">_GLIBCXX17_INLINE constexpr match_flag_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#ac070d8adb9f48dcfad7f69f4f2373708">std::regex_constants::match_default</a></td></tr>
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<tr class="memitem:a58aa59015163e03b960f295b9f2f0a37"><td class="memItemLeft" align="right" valign="top">constexpr match_flag_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a58aa59015163e03b960f295b9f2f0a37">std::regex_constants::operator&</a> (match_flag_type __a, match_flag_type __b)</td></tr>
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<tr class="memitem:a510d0810f0fe55a65a1f3ad142e95e2c"><td class="memItemLeft" align="right" valign="top">constexpr match_flag_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a510d0810f0fe55a65a1f3ad142e95e2c">std::regex_constants::operator|</a> (match_flag_type __a, match_flag_type __b)</td></tr>
<tr class="separator:a510d0810f0fe55a65a1f3ad142e95e2c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac6b912c67d2cdd494a770cd23c1b4f98"><td class="memItemLeft" align="right" valign="top">constexpr match_flag_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#ac6b912c67d2cdd494a770cd23c1b4f98">std::regex_constants::operator^</a> (match_flag_type __a, match_flag_type __b)</td></tr>
<tr class="separator:ac6b912c67d2cdd494a770cd23c1b4f98"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2aeb16521b6691e19cb344505b084271"><td class="memItemLeft" align="right" valign="top">constexpr match_flag_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a2aeb16521b6691e19cb344505b084271">std::regex_constants::operator~</a> (match_flag_type __a)</td></tr>
<tr class="separator:a2aeb16521b6691e19cb344505b084271"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6a9ccecd9a407e2f0dad9bee226c4e03"><td class="memItemLeft" align="right" valign="top">match_flag_type & </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a6a9ccecd9a407e2f0dad9bee226c4e03">std::regex_constants::operator&=</a> (match_flag_type &__a, match_flag_type __b)</td></tr>
<tr class="separator:a6a9ccecd9a407e2f0dad9bee226c4e03"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1cc70d79ada227928c10a6ae955a5527"><td class="memItemLeft" align="right" valign="top">match_flag_type & </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a1cc70d79ada227928c10a6ae955a5527">std::regex_constants::operator|=</a> (match_flag_type &__a, match_flag_type __b)</td></tr>
<tr class="separator:a1cc70d79ada227928c10a6ae955a5527"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6edeffe99c8db99f7d365da413e65c34"><td class="memItemLeft" align="right" valign="top">match_flag_type & </td><td class="memItemRight" valign="bottom"><a class="el" href="a01567.html#a6edeffe99c8db99f7d365da413e65c34">std::regex_constants::operator^=</a> (match_flag_type &__a, match_flag_type __b)</td></tr>
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</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Constant definitions for the std regex library. </p>
<p>This is an internal header file, included by other library headers. Do not attempt to use it directly. Instead, include <regex>. </p>
<p class="definition">Definition in file <a class="el" href="a00482_source.html">regex_constants.h</a>.</p>
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