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basic_regex.html

basic_regex.html 121 KB
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  25. <div class="section">
    26. 

  26. <div class="titlepage"><div><div><h3 class="title">
    27. 

  27. <a name="boost_regex.ref.basic_regex"></a><a class="link" href="basic_regex.html" title="basic_regex">basic_regex</a>
    28. 

  28. </h3></div></div></div>
    29. 

  29. <h5>
    30. 

  30. <a name="boost_regex.ref.basic_regex.h0"></a>
    31. 

  31.         <span class="phrase"><a name="boost_regex.ref.basic_regex.synopsis"></a></span><a class="link" href="basic_regex.html#boost_regex.ref.basic_regex.synopsis">Synopsis</a>
    32. 

  32.       </h5>
    33. 

  33. <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
    34. 

  34. </pre>
    35. 

  35. <p>
    36. 

  36.         The template class <code class="computeroutput"><span class="identifier">basic_regex</span></code>
    37. 

  37.         encapsulates regular expression parsing and compilation. The class takes
    38. 

  38.         two template parameters:
    39. 

  39.       </p>
    40. 

  40. <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
    41. 

  41. <li class="listitem">
    42. 

  42.             <code class="computeroutput"><span class="identifier">charT</span></code>: determines the
    43. 

  43.             character type, i.e. either <code class="computeroutput"><span class="keyword">char</span></code>
    44. 

  44.             or <code class="computeroutput"><span class="keyword">wchar_t</span></code>; see <a class="link" href="concepts/charT_concept.html" title="charT Requirements">charT
    45. 

  45.             concept</a>.
    46. 

  46.           </li>
    47. 

  47. <li class="listitem">
    48. 

  48.             <code class="computeroutput"><span class="identifier">traits</span></code>: determines the
    49. 

  49.             behavior of the character type, for example which character class names
    50. 

  50.             are recognized. A default traits class is provided: <code class="computeroutput"><span class="identifier">regex_traits</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;</span></code>. See also <a class="link" href="concepts/traits_concept.html" title="Traits Class Requirements">traits
    51. 

  51.             concept</a>.
    52. 

  52.           </li>
    53. 

  53. </ul></div>
    54. 

  54. <p>
    55. 

  55.         For ease of use there are two typedefs that define the two standard <code class="computeroutput"><span class="identifier">basic_regex</span></code> instances, unless you want
    56. 

  56.         to use custom traits classes or non-standard character types (for example
    57. 

  57.         see <a class="link" href="non_std_strings/icu.html" title="Working With Unicode and ICU String Types">unicode support</a>),
    58. 

  58.         you won't need to use anything other than these:
    59. 

  59.       </p>
    60. 

  60. <pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span>
    61. 

  61. 

  62. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span> <span class="special">=</span> <span class="identifier">regex_traits</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;</span>  <span class="special">&gt;</span>
    63. 

  63. <span class="keyword">class</span> <span class="identifier">basic_regex</span><span class="special">;</span>
    64. 

  64. 

  65. <span class="keyword">typedef</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;</span>      <span class="identifier">regex</span><span class="special">;</span>
    66. 

  66. <span class="keyword">typedef</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="keyword">wchar_t</span><span class="special">&gt;</span>   <span class="identifier">wregex</span><span class="special">;</span>
    67. 

  67. 

  68. <span class="special">}</span>
    69. 

  69. </pre>
    70. 

  70. <p>
    71. 

  71.         The definition of <code class="computeroutput"><span class="identifier">basic_regex</span></code>
    72. 

  72.         follows: it is based very closely on class <code class="computeroutput"><span class="identifier">basic_string</span></code>,
    73. 

  73.         and fulfils the requirements for a constant-container of <code class="computeroutput"><span class="identifier">charT</span></code>.
    74. 

  74.       </p>
    75. 

  75. <pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span>
    76. 

  76. 

  77. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span>  <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span> <span class="special">=</span> <span class="identifier">regex_traits</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;</span> <span class="special">&gt;</span>
    78. 

  78. <span class="keyword">class</span> <span class="identifier">basic_regex</span> <span class="special">{</span>
    79. 

  79.    <span class="keyword">public</span><span class="special">:</span>
    80. 

  80.    <span class="comment">// types:</span>
    81. 

  81.    <span class="keyword">typedef</span>          <span class="identifier">charT</span>                                <span class="identifier">value_type</span><span class="special">;</span>
    82. 

  82.    <span class="keyword">typedef</span>          <span class="identifier">implementation</span><span class="special">-</span><span class="identifier">specific</span>              <span class="identifier">const_iterator</span><span class="special">;</span>
    83. 

  83.    <span class="keyword">typedef</span>          <span class="identifier">const_iterator</span>                       <span class="identifier">iterator</span><span class="special">;</span>
    84. 

  84.    <span class="keyword">typedef</span>          <span class="identifier">charT</span><span class="special">&amp;</span>                               <span class="identifier">reference</span><span class="special">;</span>
    85. 

  85.    <span class="keyword">typedef</span>          <span class="keyword">const</span> <span class="identifier">charT</span><span class="special">&amp;</span>                         <span class="identifier">const_reference</span><span class="special">;</span>
    86. 

  86.    <span class="keyword">typedef</span>          <span class="identifier">std</span><span class="special">::</span><span class="identifier">ptrdiff_t</span>                       <span class="identifier">difference_type</span><span class="special">;</span>
    87. 

  87.    <span class="keyword">typedef</span>          <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span>                          <span class="identifier">size_type</span><span class="special">;</span>
    88. 

  88.    <span class="keyword">typedef</span>          <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a>  <span class="identifier">flag_type</span><span class="special">;</span>
    89. 

  89.    <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">traits</span><span class="special">::</span><span class="identifier">locale_type</span>                  <span class="identifier">locale_type</span><span class="special">;</span>
    90. 

  90. 

  91.    <span class="comment">// constants:</span>
    92. 

  92.    <span class="comment">// main option selection:</span>
    93. 

  93.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">normal</span>
    94. 

  94.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">;</span>
    95. 

  95.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">ECMAScript</span>
    96. 

  96.                                                 <span class="special">=</span> <span class="identifier">normal</span><span class="special">;</span>
    97. 

  97.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">JavaScript</span>
    98. 

  98.                                                 <span class="special">=</span> <span class="identifier">normal</span><span class="special">;</span>
    99. 

  99.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">JScript</span>
    100. 

  100.                                                 <span class="special">=</span> <span class="identifier">normal</span><span class="special">;</span>
    101. 

  101.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">basic</span>
    102. 

  102.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">basic</span><span class="special">;</span>
    103. 

  103.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">extended</span>
    104. 

  104.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">extended</span><span class="special">;</span>
    105. 

  105.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">awk</span>
    106. 

  106.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">awk</span><span class="special">;</span>
    107. 

  107.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">grep</span>
    108. 

  108.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">grep</span><span class="special">;</span>
    109. 

  109.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">egrep</span>
    110. 

  110.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">egrep</span><span class="special">;</span>
    111. 

  111.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">sed</span>
    112. 

  112.                                                 <span class="special">=</span> <span class="identifier">basic</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">sed</span><span class="special">;</span>
    113. 

  113.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">perl</span>
    114. 

  114.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">perl</span><span class="special">;</span>
    115. 

  115.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">literal</span>
    116. 

  116.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">literal</span><span class="special">;</span>
    117. 

  117. 

  118.    <span class="comment">// modifiers specific to perl expressions:</span>
    119. 

  119.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_mod_m</span>
    120. 

  120.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_mod_m</span><span class="special">;</span>
    121. 

  121.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_mod_s</span>
    122. 

  122.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_mod_s</span><span class="special">;</span>
    123. 

  123.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">mod_s</span>
    124. 

  124.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">mod_s</span><span class="special">;</span>
    125. 

  125.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">mod_x</span>
    126. 

  126.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">mod_x</span><span class="special">;</span>
    127. 

  127. 

  128.    <span class="comment">// modifiers specific to POSIX basic expressions:</span>
    129. 

  129.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">bk_plus_qm</span>
    130. 

  130.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">bk_plus_qm</span><span class="special">;</span>
    131. 

  131.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">bk_vbar</span>
    132. 

  132.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">bk_vbar</span>
    133. 

  133.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_char_classes</span>
    134. 

  134.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_char_classes</span>
    135. 

  135.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_intervals</span>
    136. 

  136.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_intervals</span>
    137. 

  137. 

  138.    <span class="comment">// common modifiers:</span>
    139. 

  139.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">nosubs</span>
    140. 

  140.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">nosubs</span><span class="special">;</span>
    141. 

  141.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">optimize</span>
    142. 

  142.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">optimize</span><span class="special">;</span>
    143. 

  143.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">collate</span>
    144. 

  144.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">collate</span><span class="special">;</span>
    145. 

  145.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">newline_alt</span>
    146. 

  146.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">newline_alt</span><span class="special">;</span>
    147. 

  147.    <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_except</span>
    148. 

  148.                                                 <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">newline_alt</span><span class="special">;</span>
    149. 

  149. 

  150.    <span class="comment">// construct/copy/destroy:</span>
    151. 

  151.    <span class="keyword">explicit</span> <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct1">basic_regex</a> <span class="special">();</span>
    152. 

  152.    <span class="keyword">explicit</span> <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct2">basic_regex</a><span class="special">(</span><span class="keyword">const</span>  <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p</span><span class="special">,</span> <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    153. 

  153.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct3">basic_regex</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p1</span><span class="special">,</span> <span class="keyword">const</span>  <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p2</span><span class="special">,</span>
    154. 

  154.                <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    155. 

  155.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct4">basic_regex</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p</span><span class="special">,</span> <span class="identifier">size_type</span> <span class="identifier">len</span><span class="special">,</span> <span class="identifier">flag_type</span>  <span class="identifier">f</span><span class="special">);</span>
    156. 

  156.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct5">basic_regex</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&amp;);</span>
    157. 

  157. 

  158.    <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">&gt;</span>
    159. 

  159.    <span class="keyword">explicit</span> <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct6">basic_regex</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span>  <span class="identifier">SA</span><span class="special">&gt;&amp;</span> <span class="identifier">p</span><span class="special">,</span>
    160. 

  160.                         <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    161. 

  161. 

  162.    <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">InputIterator</span><span class="special">&gt;</span>
    163. 

  163.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.construct7">basic_regex</a><span class="special">(</span><span class="identifier">InputIterator</span> <span class="identifier">first</span><span class="special">,</span>  <span class="identifier">InputIterator</span> <span class="identifier">last</span><span class="special">,</span>
    164. 

  164.                <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    165. 

  165. 

  166.    <span class="special">~</span><span class="identifier">basic_regex</span><span class="special">();</span>
    167. 

  167.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.opeq1">basic_regex&amp; operator=</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&amp;);</span>
    168. 

  168.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.opeq2">basic_regex&amp; operator=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">ptr</span><span class="special">);</span>
    169. 

  169. 

  170.    <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">&gt;</span>
    171. 

  171.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.opeq3">basic_regex&amp; operator=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">&gt;&amp;</span> <span class="identifier">p</span><span class="special">);</span>
    172. 

  172.    <span class="comment">// iterators: </span>
    173. 

  173.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.subexpression">std::pair&lt;const_iterator, const_iterator&gt; subexpression</a><span class="special">(</span><span class="identifier">size_type</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
    174. 

  174.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.begin">const_iterator begin</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    175. 

  175.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.end">const_iterator end</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    176. 

  176.    <span class="comment">// capacity: </span>
    177. 

  177.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.size">size_type size</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    178. 

  178.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.max_size">size_type max_size</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    179. 

  179.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.empty">bool empty</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    180. 

  180.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.mark_count">size_type mark_count</a><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
    181. 

  181.    <span class="comment">//</span>
    182. 

  182.    <span class="comment">// modifiers: </span>
    183. 

  183.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign1">basic_regex&amp; assign</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">that</span><span class="special">);</span>
    184. 

  184.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign2">basic_regex&amp; assign</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">ptr</span><span class="special">,</span>
    185. 

  185.                        <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    186. 

  186.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign3">basic_regex&amp; assign</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">ptr</span><span class="special">,</span> <span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">len</span><span class="special">,</span> <span class="identifier">flag_type</span> <span class="identifier">f</span><span class="special">);</span>
    187. 

  187. 

  188.    <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">string_traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">&gt;</span>
    189. 

  189.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign4">basic_regex&amp; assign</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">string_traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
    190. 

  190.                        <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    191. 

  191. 

  192.    <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">InputIterator</span><span class="special">&gt;</span>
    193. 

  193.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign5">basic_regex&amp; assign</a><span class="special">(</span><span class="identifier">InputIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">InputIterator</span> <span class="identifier">last</span><span class="special">,</span>
    194. 

  194.                        <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    195. 

  195. 

  196.    <span class="comment">// const operations:</span>
    197. 

  197.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.flags">flag_type flags</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    198. 

  198.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.status">int status</a><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
    199. 

  199.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.str">basic_string&lt;charT&gt; str</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    200. 

  200.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.compare">int compare</a><span class="special">(</span><span class="identifier">basic_regex</span><span class="special">&amp;)</span> <span class="keyword">const</span><span class="special">;</span>
    201. 

  201.    <span class="comment">// locale:</span>
    202. 

  202.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.imbue">locale_type imbue</a><span class="special">(</span><span class="identifier">locale_type</span> <span class="identifier">loc</span><span class="special">);</span>
    203. 

  203.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.getloc">locale_type getloc</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    204. 

  204.    <span class="comment">// swap</span>
    205. 

  205.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.swap">void swap</a><span class="special">(</span><span class="identifier">basic_regex</span><span class="special">&amp;)</span> <span class="keyword">throw</span><span class="special">();</span>
    206. 

  206. <span class="special">};</span>
    207. 

  207. 

  208. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    209. 

  209. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_eq">bool operator ==</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    210. 

  210.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    211. 

  211. 

  212. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    213. 

  213. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_ne">bool operator !=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    214. 

  214.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    215. 

  215. 

  216. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    217. 

  217. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_lt">bool operator &lt;</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    218. 

  218.                <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    219. 

  219. 

  220. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    221. 

  221. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_le">bool operator &lt;=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    222. 

  222.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    223. 

  223. 

  224. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    225. 

  225. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_ge">bool operator &gt;=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    226. 

  226.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    227. 

  227. 

  228. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    229. 

  229. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_gt">bool operator &gt;</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    230. 

  230.                <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    231. 

  231. 

  232. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">io_traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">re_traits</span><span class="special">&gt;</span>
    233. 

  233. <span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">io_traits</span><span class="special">&gt;&amp;</span>
    234. 

  234.    <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_stream">operator &lt;&lt;</a> <span class="special">(</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">io_traits</span><span class="special">&gt;&amp;</span> <span class="identifier">os</span><span class="special">,</span>
    235. 

  235.                <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">re_traits</span><span class="special">&gt;&amp;</span> <span class="identifier">e</span><span class="special">);</span>
    236. 

  236. 

  237. <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    238. 

  238. <a class="link" href="basic_regex.html#boost_regex.basic_regex.op_swap">void swap</a><span class="special">(</span><span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">e1</span><span class="special">,</span>
    239. 

  239.          <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">e2</span><span class="special">);</span>
    240. 

  240. 

  241. <span class="keyword">typedef</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">regex</span><span class="special">;</span>
    242. 

  242. <span class="keyword">typedef</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="keyword">wchar_t</span><span class="special">&gt;</span> <span class="identifier">wregex</span><span class="special">;</span>
    243. 

  243. 

  244. <span class="special">}</span> <span class="comment">// namespace boost</span>
    245. 

  245. </pre>
    246. 

  246. <h5>
    247. 

  247. <a name="boost_regex.ref.basic_regex.h1"></a>
    248. 

  248.         <span class="phrase"><a name="boost_regex.ref.basic_regex.description"></a></span><a class="link" href="basic_regex.html#boost_regex.ref.basic_regex.description">Description</a>
    249. 

  249.       </h5>
    250. 

  250. <p>
    251. 

  251.         Class <code class="computeroutput"><span class="identifier">basic_regex</span></code> has the
    252. 

  252.         following public members:
    253. 

  253.       </p>
    254. 

  254. <pre class="programlisting"><span class="comment">// main option selection:</span>
    255. 

  255. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">normal</span>
    256. 

  256.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">;</span>
    257. 

  257. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">ECMAScript</span>
    258. 

  258.                                           <span class="special">=</span> <span class="identifier">normal</span><span class="special">;</span>
    259. 

  259. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">JavaScript</span>
    260. 

  260.                                           <span class="special">=</span> <span class="identifier">normal</span><span class="special">;</span>
    261. 

  261. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">JScript</span>
    262. 

  262.                                           <span class="special">=</span> <span class="identifier">normal</span><span class="special">;</span>
    263. 

  263. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">basic</span>
    264. 

  264.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">basic</span><span class="special">;</span>
    265. 

  265. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">extended</span>
    266. 

  266.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">extended</span><span class="special">;</span>
    267. 

  267. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">awk</span>
    268. 

  268.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">awk</span><span class="special">;</span>
    269. 

  269. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">grep</span>
    270. 

  270.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">grep</span><span class="special">;</span>
    271. 

  271. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">egrep</span>
    272. 

  272.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">egrep</span><span class="special">;</span>
    273. 

  273. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">sed</span>
    274. 

  274.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">sed</span><span class="special">;</span>
    275. 

  275. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">perl</span>
    276. 

  276.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">perl</span><span class="special">;</span>
    277. 

  277. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">literal</span>
    278. 

  278.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">literal</span><span class="special">;</span>
    279. 

  279. 

  280. <span class="comment">// modifiers specific to perl expressions:</span>
    281. 

  281. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_mod_m</span>
    282. 

  282.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_mod_m</span><span class="special">;</span>
    283. 

  283. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_mod_s</span>
    284. 

  284.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_mod_s</span><span class="special">;</span>
    285. 

  285. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">mod_s</span>
    286. 

  286.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">mod_s</span><span class="special">;</span>
    287. 

  287. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">mod_x</span>
    288. 

  288.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">mod_x</span><span class="special">;</span>
    289. 

  289. 

  290. <span class="comment">// modifiers specific to POSIX basic expressions:</span>
    291. 

  291. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">bk_plus_qm</span>
    292. 

  292.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">bk_plus_qm</span><span class="special">;</span>
    293. 

  293. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">bk_vbar</span>
    294. 

  294.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">bk_vbar</span>
    295. 

  295. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_char_classes</span>
    296. 

  296.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_char_classes</span>
    297. 

  297. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">no_intervals</span>
    298. 

  298.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">no_intervals</span>
    299. 

  299. 

  300. <span class="comment">// common modifiers:</span>
    301. 

  301. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">nosubs</span>
    302. 

  302.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">nosubs</span><span class="special">;</span>
    303. 

  303. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">optimize</span>
    304. 

  304.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">optimize</span><span class="special">;</span>
    305. 

  305. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">collate</span>
    306. 

  306.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">collate</span><span class="special">;</span>
    307. 

  307. <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">regex_constants</span><span class="special">::</span> <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> <span class="identifier">newline_alt</span>
    308. 

  308.                                           <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">newline_alt</span><span class="special">;</span>
    309. 

  309. </pre>
    310. 

  310. <p>
    311. 

  311.         The meaning of these options is documented in the <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> section.
    312. 

  312.       </p>
    313. 

  313. <p>
    314. 

  314.         The static constant members are provided as synonyms for the constants declared
    315. 

  315.         in namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span></code>; for each constant of type
    316. 

  316.         <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a>
    317. 

  317.         declared in namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span></code>
    318. 

  318.         then a constant with the same name, type and value is declared within the
    319. 

  319.         scope of basic_regex.
    320. 

  320.       </p>
    321. 

  321. <a name="boost_regex.basic_regex.construct1"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">();</span>
    322. 

  322. </pre>
    323. 

  323. <p>
    324. 

  324.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    325. 

  325.         <code class="computeroutput"><span class="identifier">basic_regex</span></code>.
    326. 

  326.       </p>
    327. 

  327. <div class="table">
    328. 

  328. <a name="boost_regex.ref.basic_regex.basic_regex_default_construction"></a><p class="title"><b>Table&#160;1.&#160;basic_regex default construction postconditions</b></p>
    329. 

  329. <div class="table-contents"><table class="table" summary="basic_regex default construction postconditions">
    330. 

  330. <colgroup>
    331. 

  331. <col>
    332. 

  332. <col>
    333. 

  333. </colgroup>
    334. 

  334. <thead><tr>
    335. 

  335. <th>
    336. 

  336.                 <p>
    337. 

  337.                   Element
    338. 

  338.                 </p>
    339. 

  339.               </th>
    340. 

  340. <th>
    341. 

  341.                 <p>
    342. 

  342.                   Value
    343. 

  343.                 </p>
    344. 

  344.               </th>
    345. 

  345. </tr></thead>
    346. 

  346. <tbody>
    347. 

  347. <tr>
    348. 

  348. <td>
    349. 

  349.                 <p>
    350. 

  350.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    351. 

  351.                 </p>
    352. 

  352.               </td>
    353. 

  353. <td>
    354. 

  354.                 <p>
    355. 

  355.                   <code class="computeroutput"><span class="keyword">true</span></code>
    356. 

  356.                 </p>
    357. 

  357.               </td>
    358. 

  358. </tr>
    359. 

  359. <tr>
    360. 

  360. <td>
    361. 

  361.                 <p>
    362. 

  362.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    363. 

  363.                 </p>
    364. 

  364.               </td>
    365. 

  365. <td>
    366. 

  366.                 <p>
    367. 

  367.                   <code class="computeroutput"><span class="number">0</span></code>
    368. 

  368.                 </p>
    369. 

  369.               </td>
    370. 

  370. </tr>
    371. 

  371. <tr>
    372. 

  372. <td>
    373. 

  373.                 <p>
    374. 

  374.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    375. 

  375.                 </p>
    376. 

  376.               </td>
    377. 

  377. <td>
    378. 

  378.                 <p>
    379. 

  379.                   <code class="computeroutput"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;()</span></code>
    380. 

  380.                 </p>
    381. 

  381.               </td>
    382. 

  382. </tr>
    383. 

  383. </tbody>
    384. 

  384. </table></div>
    385. 

  385. </div>
    386. 

  386. <br class="table-break"><a name="boost_regex.basic_regex.construct2"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p</span><span class="special">,</span> <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    387. 

  387. </pre>
    388. 

  388. <p>
    389. 

  389.         <span class="bold"><strong>Requires</strong></span>: <span class="emphasis"><em>p</em></span> shall not
    390. 

  390.         be a null pointer.
    391. 

  391.       </p>
    392. 

  392. <p>
    393. 

  393.         <span class="bold"><strong>Throws</strong></span>: <a class="link" href="bad_expression.html" title="bad_expression"><code class="computeroutput"><span class="identifier">bad_expression</span></code></a> if <span class="emphasis"><em>p</em></span>
    394. 

  394.         is not a valid regular expression, unless the flag <code class="computeroutput"><span class="identifier">no_except</span></code>
    395. 

  395.         is set in <span class="emphasis"><em>f</em></span>.
    396. 

  396.       </p>
    397. 

  397. <p>
    398. 

  398.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    399. 

  399.         <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>;
    400. 

  400.         the object's internal finite state machine is constructed from the regular
    401. 

  401.         expression contained in the null-terminated string <span class="emphasis"><em>p</em></span>,
    402. 

  402.         and interpreted according to the <a class="link" href="syntax_option_type.html" title="syntax_option_type">option
    403. 

  403.         flags</a> specified in <span class="emphasis"><em>f</em></span>.
    404. 

  404.       </p>
    405. 

  405. <div class="table">
    406. 

  406. <a name="boost_regex.ref.basic_regex.postconditions_for_basic_regex_c"></a><p class="title"><b>Table&#160;2.&#160;Postconditions for basic_regex construction</b></p>
    407. 

  407. <div class="table-contents"><table class="table" summary="Postconditions for basic_regex construction">
    408. 

  408. <colgroup>
    409. 

  409. <col>
    410. 

  410. <col>
    411. 

  411. </colgroup>
    412. 

  412. <thead><tr>
    413. 

  413. <th>
    414. 

  414.                 <p>
    415. 

  415.                   Element
    416. 

  416.                 </p>
    417. 

  417.               </th>
    418. 

  418. <th>
    419. 

  419.                 <p>
    420. 

  420.                   Value
    421. 

  421.                 </p>
    422. 

  422.               </th>
    423. 

  423. </tr></thead>
    424. 

  424. <tbody>
    425. 

  425. <tr>
    426. 

  426. <td>
    427. 

  427.                 <p>
    428. 

  428.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    429. 

  429.                 </p>
    430. 

  430.               </td>
    431. 

  431. <td>
    432. 

  432.                 <p>
    433. 

  433.                   <code class="computeroutput"><span class="keyword">false</span></code>
    434. 

  434.                 </p>
    435. 

  435.               </td>
    436. 

  436. </tr>
    437. 

  437. <tr>
    438. 

  438. <td>
    439. 

  439.                 <p>
    440. 

  440.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    441. 

  441.                 </p>
    442. 

  442.               </td>
    443. 

  443. <td>
    444. 

  444.                 <p>
    445. 

  445.                   <code class="computeroutput"><span class="identifier">char_traits</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;::</span><span class="identifier">length</span><span class="special">(</span><span class="identifier">p</span><span class="special">)</span></code>
    446. 

  446.                 </p>
    447. 

  447.               </td>
    448. 

  448. </tr>
    449. 

  449. <tr>
    450. 

  450. <td>
    451. 

  451.                 <p>
    452. 

  452.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    453. 

  453.                 </p>
    454. 

  454.               </td>
    455. 

  455. <td>
    456. 

  456.                 <p>
    457. 

  457.                   <code class="computeroutput"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;(</span><span class="identifier">p</span><span class="special">)</span></code>
    458. 

  458.                 </p>
    459. 

  459.               </td>
    460. 

  460. </tr>
    461. 

  461. <tr>
    462. 

  462. <td>
    463. 

  463.                 <p>
    464. 

  464.                   <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span></code>
    465. 

  465.                 </p>
    466. 

  466.               </td>
    467. 

  467. <td>
    468. 

  468.                 <p>
    469. 

  469.                   <span class="emphasis"><em>f</em></span>
    470. 

  470.                 </p>
    471. 

  471.               </td>
    472. 

  472. </tr>
    473. 

  473. <tr>
    474. 

  474. <td>
    475. 

  475.                 <p>
    476. 

  476.                   <code class="computeroutput"><span class="identifier">mark_count</span><span class="special">()</span></code>
    477. 

  477.                 </p>
    478. 

  478.               </td>
    479. 

  479. <td>
    480. 

  480.                 <p>
    481. 

  481.                   The number of marked sub-expressions within the expression.
    482. 

  482.                 </p>
    483. 

  483.               </td>
    484. 

  484. </tr>
    485. 

  485. </tbody>
    486. 

  486. </table></div>
    487. 

  487. </div>
    488. 

  488. <br class="table-break"><a name="boost_regex.basic_regex.construct3"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p1</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p2</span><span class="special">,</span>
    489. 

  489.             <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    490. 

  490. </pre>
    491. 

  491. <p>
    492. 

  492.         <span class="bold"><strong>Requires</strong></span>: <span class="emphasis"><em>p1</em></span> and <span class="emphasis"><em>p2</em></span>
    493. 

  493.         are not null pointers, <code class="computeroutput"><span class="identifier">p1</span> <span class="special">&lt;</span> <span class="identifier">p2</span></code>.
    494. 

  494.       </p>
    495. 

  495. <p>
    496. 

  496.         <span class="bold"><strong>Throws</strong></span>: bad_expression if [p1,p2) is not
    497. 

  497.         a valid regular expression, unless the flag <code class="computeroutput"><span class="identifier">no_except</span></code>
    498. 

  498.         is set in <span class="emphasis"><em>f</em></span>.
    499. 

  499.       </p>
    500. 

  500. <p>
    501. 

  501.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    502. 

  502.         <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>;
    503. 

  503.         the object's internal finite state machine is constructed from the regular
    504. 

  504.         expression contained in the sequence of characters [p1,p2), and interpreted
    505. 

  505.         according the <a class="link" href="syntax_option_type.html" title="syntax_option_type">option flags</a>
    506. 

  506.         specified in <span class="emphasis"><em>f</em></span>.
    507. 

  507.       </p>
    508. 

  508. <div class="table">
    509. 

  509. <a name="boost_regex.ref.basic_regex.postconditions_for_basic_regex_0"></a><p class="title"><b>Table&#160;3.&#160;Postconditions for basic_regex construction</b></p>
    510. 

  510. <div class="table-contents"><table class="table" summary="Postconditions for basic_regex construction">
    511. 

  511. <colgroup>
    512. 

  512. <col>
    513. 

  513. <col>
    514. 

  514. </colgroup>
    515. 

  515. <thead><tr>
    516. 

  516. <th>
    517. 

  517.                 <p>
    518. 

  518.                   Element
    519. 

  519.                 </p>
    520. 

  520.               </th>
    521. 

  521. <th>
    522. 

  522.                 <p>
    523. 

  523.                   Value
    524. 

  524.                 </p>
    525. 

  525.               </th>
    526. 

  526. </tr></thead>
    527. 

  527. <tbody>
    528. 

  528. <tr>
    529. 

  529. <td>
    530. 

  530.                 <p>
    531. 

  531.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    532. 

  532.                 </p>
    533. 

  533.               </td>
    534. 

  534. <td>
    535. 

  535.                 <p>
    536. 

  536.                   <code class="computeroutput"><span class="keyword">false</span></code>
    537. 

  537.                 </p>
    538. 

  538.               </td>
    539. 

  539. </tr>
    540. 

  540. <tr>
    541. 

  541. <td>
    542. 

  542.                 <p>
    543. 

  543.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    544. 

  544.                 </p>
    545. 

  545.               </td>
    546. 

  546. <td>
    547. 

  547.                 <p>
    548. 

  548.                   <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">distance</span><span class="special">(</span><span class="identifier">p1</span><span class="special">,</span><span class="identifier">p2</span><span class="special">)</span></code>
    549. 

  549.                 </p>
    550. 

  550.               </td>
    551. 

  551. </tr>
    552. 

  552. <tr>
    553. 

  553. <td>
    554. 

  554.                 <p>
    555. 

  555.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    556. 

  556.                 </p>
    557. 

  557.               </td>
    558. 

  558. <td>
    559. 

  559.                 <p>
    560. 

  560.                   <code class="computeroutput"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;(</span><span class="identifier">p1</span><span class="special">,</span><span class="identifier">p2</span><span class="special">)</span></code>
    561. 

  561.                 </p>
    562. 

  562.               </td>
    563. 

  563. </tr>
    564. 

  564. <tr>
    565. 

  565. <td>
    566. 

  566.                 <p>
    567. 

  567.                   <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span></code>
    568. 

  568.                 </p>
    569. 

  569.               </td>
    570. 

  570. <td>
    571. 

  571.                 <p>
    572. 

  572.                   <span class="emphasis"><em>f</em></span>
    573. 

  573.                 </p>
    574. 

  574.               </td>
    575. 

  575. </tr>
    576. 

  576. <tr>
    577. 

  577. <td>
    578. 

  578.                 <p>
    579. 

  579.                   <code class="computeroutput"><span class="identifier">mark_count</span><span class="special">()</span></code>
    580. 

  580.                 </p>
    581. 

  581.               </td>
    582. 

  582. <td>
    583. 

  583.                 <p>
    584. 

  584.                   The number of marked sub-expressions within the expression.
    585. 

  585.                 </p>
    586. 

  586.               </td>
    587. 

  587. </tr>
    588. 

  588. </tbody>
    589. 

  589. </table></div>
    590. 

  590. </div>
    591. 

  591. <br class="table-break"><a name="boost_regex.basic_regex.construct4"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">p</span><span class="special">,</span> <span class="identifier">size_type</span> <span class="identifier">len</span><span class="special">,</span> <span class="identifier">flag_type</span> <span class="identifier">f</span><span class="special">);</span>
    592. 

  592. </pre>
    593. 

  593. <p>
    594. 

  594.         <span class="bold"><strong>Requires</strong></span>: <span class="emphasis"><em>p</em></span> shall not
    595. 

  595.         be a null pointer, <code class="computeroutput"><span class="identifier">len</span> <span class="special">&lt;</span>
    596. 

  596.         <span class="identifier">max_size</span><span class="special">()</span></code>.
    597. 

  597.       </p>
    598. 

  598. <p>
    599. 

  599.         <span class="bold"><strong>Throws</strong></span>: <a class="link" href="bad_expression.html" title="bad_expression"><code class="computeroutput"><span class="identifier">bad_expression</span></code></a> if <span class="emphasis"><em>p</em></span>
    600. 

  600.         is not a valid regular expression, unless the flag <code class="computeroutput"><span class="identifier">no_except</span></code>
    601. 

  601.         is set in <span class="emphasis"><em>f</em></span>.
    602. 

  602.       </p>
    603. 

  603. <p>
    604. 

  604.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    605. 

  605.         <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>;
    606. 

  606.         the object's internal finite state machine is constructed from the regular
    607. 

  607.         expression contained in the sequence of characters [p, p+len), and interpreted
    608. 

  608.         according the option flags specified in <span class="emphasis"><em>f</em></span>.
    609. 

  609.       </p>
    610. 

  610. <div class="table">
    611. 

  611. <a name="boost_regex.ref.basic_regex.postconditions_for_basic_regex_1"></a><p class="title"><b>Table&#160;4.&#160;Postconditions for basic_regex construction</b></p>
    612. 

  612. <div class="table-contents"><table class="table" summary="Postconditions for basic_regex construction">
    613. 

  613. <colgroup>
    614. 

  614. <col>
    615. 

  615. <col>
    616. 

  616. </colgroup>
    617. 

  617. <thead><tr>
    618. 

  618. <th>
    619. 

  619.                 <p>
    620. 

  620.                   Element
    621. 

  621.                 </p>
    622. 

  622.               </th>
    623. 

  623. <th>
    624. 

  624.                 <p>
    625. 

  625.                   Value
    626. 

  626.                 </p>
    627. 

  627.               </th>
    628. 

  628. </tr></thead>
    629. 

  629. <tbody>
    630. 

  630. <tr>
    631. 

  631. <td>
    632. 

  632.                 <p>
    633. 

  633.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    634. 

  634.                 </p>
    635. 

  635.               </td>
    636. 

  636. <td>
    637. 

  637.                 <p>
    638. 

  638.                   <code class="computeroutput"><span class="keyword">false</span></code>
    639. 

  639.                 </p>
    640. 

  640.               </td>
    641. 

  641. </tr>
    642. 

  642. <tr>
    643. 

  643. <td>
    644. 

  644.                 <p>
    645. 

  645.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    646. 

  646.                 </p>
    647. 

  647.               </td>
    648. 

  648. <td>
    649. 

  649.                 <p>
    650. 

  650.                   <span class="emphasis"><em>len</em></span>
    651. 

  651.                 </p>
    652. 

  652.               </td>
    653. 

  653. </tr>
    654. 

  654. <tr>
    655. 

  655. <td>
    656. 

  656.                 <p>
    657. 

  657.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    658. 

  658.                 </p>
    659. 

  659.               </td>
    660. 

  660. <td>
    661. 

  661.                 <p>
    662. 

  662.                   <code class="computeroutput"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;(</span><span class="identifier">p</span><span class="special">,</span>
    663. 

  663.                   <span class="identifier">len</span><span class="special">)</span></code>
    664. 

  664.                 </p>
    665. 

  665.               </td>
    666. 

  666. </tr>
    667. 

  667. <tr>
    668. 

  668. <td>
    669. 

  669.                 <p>
    670. 

  670.                   <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span></code>
    671. 

  671.                 </p>
    672. 

  672.               </td>
    673. 

  673. <td>
    674. 

  674.                 <p>
    675. 

  675.                   <span class="emphasis"><em>f</em></span>
    676. 

  676.                 </p>
    677. 

  677.               </td>
    678. 

  678. </tr>
    679. 

  679. <tr>
    680. 

  680. <td>
    681. 

  681.                 <p>
    682. 

  682.                   <code class="computeroutput"><span class="identifier">mark_count</span><span class="special">()</span></code>
    683. 

  683.                 </p>
    684. 

  684.               </td>
    685. 

  685. <td>
    686. 

  686.                 <p>
    687. 

  687.                   The number of marked sub-expressions within the expression.
    688. 

  688.                 </p>
    689. 

  689.               </td>
    690. 

  690. </tr>
    691. 

  691. </tbody>
    692. 

  692. </table></div>
    693. 

  693. </div>
    694. 

  694. <br class="table-break"><a name="boost_regex.basic_regex.construct5"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">e</span><span class="special">);</span>
    695. 

  695. </pre>
    696. 

  696. <p>
    697. 

  697.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    698. 

  698.         <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>
    699. 

  699.         as a copy of the object <span class="emphasis"><em>e</em></span>.
    700. 

  700.       </p>
    701. 

  701. <a name="boost_regex.basic_regex.construct6"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">&gt;</span>
    702. 

  702. <span class="identifier">basic_regex</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
    703. 

  703.             <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    704. 

  704. </pre>
    705. 

  705. <p>
    706. 

  706.         <span class="bold"><strong>Throws</strong></span>: <a class="link" href="bad_expression.html" title="bad_expression"><code class="computeroutput"><span class="identifier">bad_expression</span></code></a> if <span class="emphasis"><em>s</em></span>
    707. 

  707.         is not a valid regular expression, unless the flag <code class="computeroutput"><span class="identifier">no_except</span></code>
    708. 

  708.         is set in <span class="emphasis"><em>f</em></span>.
    709. 

  709.       </p>
    710. 

  710. <p>
    711. 

  711.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    712. 

  712.         <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>;
    713. 

  713.         the object's internal finite state machine is constructed from the regular
    714. 

  714.         expression contained in the string <span class="emphasis"><em>s</em></span>, and interpreted
    715. 

  715.         according to the <a class="link" href="syntax_option_type.html" title="syntax_option_type">option
    716. 

  716.         flags</a> specified in <span class="emphasis"><em>f</em></span>.
    717. 

  717.       </p>
    718. 

  718. <div class="table">
    719. 

  719. <a name="boost_regex.ref.basic_regex.postconditions_for_basic_regex_2"></a><p class="title"><b>Table&#160;5.&#160;Postconditions for basic_regex construction</b></p>
    720. 

  720. <div class="table-contents"><table class="table" summary="Postconditions for basic_regex construction">
    721. 

  721. <colgroup>
    722. 

  722. <col>
    723. 

  723. <col>
    724. 

  724. </colgroup>
    725. 

  725. <thead><tr>
    726. 

  726. <th>
    727. 

  727.                 <p>
    728. 

  728.                   Element
    729. 

  729.                 </p>
    730. 

  730.               </th>
    731. 

  731. <th>
    732. 

  732.                 <p>
    733. 

  733.                   Value
    734. 

  734.                 </p>
    735. 

  735.               </th>
    736. 

  736. </tr></thead>
    737. 

  737. <tbody>
    738. 

  738. <tr>
    739. 

  739. <td>
    740. 

  740.                 <p>
    741. 

  741.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    742. 

  742.                 </p>
    743. 

  743.               </td>
    744. 

  744. <td>
    745. 

  745.                 <p>
    746. 

  746.                   <code class="computeroutput"><span class="keyword">false</span></code>
    747. 

  747.                 </p>
    748. 

  748.               </td>
    749. 

  749. </tr>
    750. 

  750. <tr>
    751. 

  751. <td>
    752. 

  752.                 <p>
    753. 

  753.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    754. 

  754.                 </p>
    755. 

  755.               </td>
    756. 

  756. <td>
    757. 

  757.                 <p>
    758. 

  758.                   <code class="computeroutput"><span class="identifier">s</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span></code>
    759. 

  759.                 </p>
    760. 

  760.               </td>
    761. 

  761. </tr>
    762. 

  762. <tr>
    763. 

  763. <td>
    764. 

  764.                 <p>
    765. 

  765.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    766. 

  766.                 </p>
    767. 

  767.               </td>
    768. 

  768. <td>
    769. 

  769.                 <p>
    770. 

  770.                   <span class="emphasis"><em>s</em></span>
    771. 

  771.                 </p>
    772. 

  772.               </td>
    773. 

  773. </tr>
    774. 

  774. <tr>
    775. 

  775. <td>
    776. 

  776.                 <p>
    777. 

  777.                   <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span></code>
    778. 

  778.                 </p>
    779. 

  779.               </td>
    780. 

  780. <td>
    781. 

  781.                 <p>
    782. 

  782.                   <span class="emphasis"><em>f</em></span>
    783. 

  783.                 </p>
    784. 

  784.               </td>
    785. 

  785. </tr>
    786. 

  786. <tr>
    787. 

  787. <td>
    788. 

  788.                 <p>
    789. 

  789.                   <code class="computeroutput"><span class="identifier">mark_count</span><span class="special">()</span></code>
    790. 

  790.                 </p>
    791. 

  791.               </td>
    792. 

  792. <td>
    793. 

  793.                 <p>
    794. 

  794.                   The number of marked sub-expressions within the expression.
    795. 

  795.                 </p>
    796. 

  796.               </td>
    797. 

  797. </tr>
    798. 

  798. </tbody>
    799. 

  799. </table></div>
    800. 

  800. </div>
    801. 

  801. <br class="table-break"><a name="boost_regex.basic_regex.construct7"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">ForwardIterator</span><span class="special">&gt;</span>
    802. 

  802. <span class="identifier">basic_regex</span><span class="special">(</span><span class="identifier">ForwardIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">ForwardIterator</span> <span class="identifier">last</span><span class="special">,</span>
    803. 

  803.             <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    804. 

  804. </pre>
    805. 

  805. <p>
    806. 

  806.         <span class="bold"><strong>Throws</strong></span>: <a class="link" href="bad_expression.html" title="bad_expression"><code class="computeroutput"><span class="identifier">bad_expression</span></code></a> if the sequence [first,
    807. 

  807.         last) is not a valid regular expression, unless the flag <code class="computeroutput"><span class="identifier">no_except</span></code>
    808. 

  808.         is set in <span class="emphasis"><em>f</em></span>.
    809. 

  809.       </p>
    810. 

  810. <p>
    811. 

  811.         <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
    812. 

  812.         <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>;
    813. 

  813.         the object's internal finite state machine is constructed from the regular
    814. 

  814.         expression contained in the sequence of characters [first, last), and interpreted
    815. 

  815.         according to the <a class="link" href="syntax_option_type.html" title="syntax_option_type">option
    816. 

  816.         flags</a> specified in <span class="emphasis"><em>f</em></span>.
    817. 

  817.       </p>
    818. 

  818. <div class="table">
    819. 

  819. <a name="boost_regex.ref.basic_regex.postconditions_for_basic_regex_3"></a><p class="title"><b>Table&#160;6.&#160;Postconditions for basic_regex construction</b></p>
    820. 

  820. <div class="table-contents"><table class="table" summary="Postconditions for basic_regex construction">
    821. 

  821. <colgroup>
    822. 

  822. <col>
    823. 

  823. <col>
    824. 

  824. </colgroup>
    825. 

  825. <thead><tr>
    826. 

  826. <th>
    827. 

  827.                 <p>
    828. 

  828.                   Element
    829. 

  829.                 </p>
    830. 

  830.               </th>
    831. 

  831. <th>
    832. 

  832.                 <p>
    833. 

  833.                   Value
    834. 

  834.                 </p>
    835. 

  835.               </th>
    836. 

  836. </tr></thead>
    837. 

  837. <tbody>
    838. 

  838. <tr>
    839. 

  839. <td>
    840. 

  840.                 <p>
    841. 

  841.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    842. 

  842.                 </p>
    843. 

  843.               </td>
    844. 

  844. <td>
    845. 

  845.                 <p>
    846. 

  846.                   <code class="computeroutput"><span class="keyword">false</span></code>
    847. 

  847.                 </p>
    848. 

  848.               </td>
    849. 

  849. </tr>
    850. 

  850. <tr>
    851. 

  851. <td>
    852. 

  852.                 <p>
    853. 

  853.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    854. 

  854.                 </p>
    855. 

  855.               </td>
    856. 

  856. <td>
    857. 

  857.                 <p>
    858. 

  858.                   <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">first</span><span class="special">,</span><span class="identifier">last</span><span class="special">)</span></code>
    859. 

  859.                 </p>
    860. 

  860.               </td>
    861. 

  861. </tr>
    862. 

  862. <tr>
    863. 

  863. <td>
    864. 

  864.                 <p>
    865. 

  865.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    866. 

  866.                 </p>
    867. 

  867.               </td>
    868. 

  868. <td>
    869. 

  869.                 <p>
    870. 

  870.                   <code class="computeroutput"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;(</span><span class="identifier">first</span><span class="special">,</span><span class="identifier">last</span><span class="special">)</span></code>
    871. 

  871.                 </p>
    872. 

  872.               </td>
    873. 

  873. </tr>
    874. 

  874. <tr>
    875. 

  875. <td>
    876. 

  876.                 <p>
    877. 

  877.                   <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span></code>
    878. 

  878.                 </p>
    879. 

  879.               </td>
    880. 

  880. <td>
    881. 

  881.                 <p>
    882. 

  882.                   <span class="emphasis"><em>f</em></span>
    883. 

  883.                 </p>
    884. 

  884.               </td>
    885. 

  885. </tr>
    886. 

  886. <tr>
    887. 

  887. <td>
    888. 

  888.                 <p>
    889. 

  889.                   <code class="computeroutput"><span class="identifier">mark_count</span><span class="special">()</span></code>
    890. 

  890.                 </p>
    891. 

  891.               </td>
    892. 

  892. <td>
    893. 

  893.                 <p>
    894. 

  894.                   The number of marked sub-expressions within the expression.
    895. 

  895.                 </p>
    896. 

  896.               </td>
    897. 

  897. </tr>
    898. 

  898. </tbody>
    899. 

  899. </table></div>
    900. 

  900. </div>
    901. 

  901. <br class="table-break"><a name="boost_regex.basic_regex.opeq1"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">e</span><span class="special">);</span>
    902. 

  902. </pre>
    903. 

  903. <p>
    904. 

  904.         <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">e</span><span class="special">.</span><span class="identifier">str</span><span class="special">(),</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">flags</span><span class="special">())</span></code>.
    905. 

  905.       </p>
    906. 

  906. <a name="boost_regex.basic_regex.opeq2"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">ptr</span><span class="special">);</span>
    907. 

  907. </pre>
    908. 

  908. <p>
    909. 

  909.         <span class="bold"><strong>Requires</strong></span>: <span class="emphasis"><em>p</em></span> shall not
    910. 

  910.         be a null pointer.
    911. 

  911.       </p>
    912. 

  912. <p>
    913. 

  913.         <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">ptr</span><span class="special">)</span></code>.
    914. 

  914.       </p>
    915. 

  915. <a name="boost_regex.basic_regex.opeq3"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">&gt;</span>
    916. 

  916. <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">&gt;&amp;</span> <span class="identifier">p</span><span class="special">);</span>
    917. 

  917. </pre>
    918. 

  918. <p>
    919. 

  919.         <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">p</span><span class="special">)</span></code>.
    920. 

  920.       </p>
    921. 

  921. <a name="boost_regex.basic_regex.subexpression"></a><pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">const_iterator</span><span class="special">&gt;</span> <span class="identifier">subexpression</span><span class="special">(</span><span class="identifier">size_type</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
    922. 

  922. </pre>
    923. 

  923. <p>
    924. 

  924.         <span class="bold"><strong>Effects</strong></span>: Returns a pair of iterators denoting
    925. 

  925.         the location of marked subexpression <span class="emphasis"><em>n</em></span> within the original
    926. 

  926.         regular expression string. The returned iterators are relative to <code class="computeroutput"><span class="identifier">begin</span><span class="special">()</span></code>
    927. 

  927.         and <code class="computeroutput"><span class="identifier">end</span><span class="special">()</span></code>.
    928. 

  928.       </p>
    929. 

  929. <p>
    930. 

  930.         <span class="bold"><strong>Requires</strong></span>: The expression must have been
    931. 

  931.         compiled with the <a class="link" href="syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a> save_subexpression_location
    932. 

  932.         set. Argument <span class="emphasis"><em>n</em></span> must be in within the range <code class="computeroutput"><span class="number">0</span> <span class="special">&lt;=</span> <span class="identifier">n</span>
    933. 

  933.         <span class="special">&lt;</span> <span class="identifier">mark_count</span><span class="special">()</span></code>.
    934. 

  934.       </p>
    935. 

  935. <a name="boost_regex.basic_regex.begin"></a><pre class="programlisting"><span class="identifier">const_iterator</span> <span class="identifier">begin</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    936. 

  936. </pre>
    937. 

  937. <p>
    938. 

  938.         <span class="bold"><strong>Effects</strong></span>: Returns a starting iterator to
    939. 

  939.         a sequence of characters representing the regular expression.
    940. 

  940.       </p>
    941. 

  941. <a name="boost_regex.basic_regex.end"></a><pre class="programlisting"><span class="identifier">const_iterator</span> <span class="identifier">end</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    942. 

  942. </pre>
    943. 

  943. <p>
    944. 

  944.         <span class="bold"><strong>Effects</strong></span>: Returns termination iterator to
    945. 

  945.         a sequence of characters representing the regular expression.
    946. 

  946.       </p>
    947. 

  947. <a name="boost_regex.basic_regex.size"></a><pre class="programlisting"><span class="identifier">size_type</span> <span class="identifier">size</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    948. 

  948. </pre>
    949. 

  949. <p>
    950. 

  950.         <span class="bold"><strong>Effects</strong></span>: Returns the length of the sequence
    951. 

  951.         of characters representing the regular expression.
    952. 

  952.       </p>
    953. 

  953. <a name="boost_regex.basic_regex.max_size"></a><pre class="programlisting"><span class="identifier">size_type</span> <span class="identifier">max_size</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    954. 

  954. </pre>
    955. 

  955. <p>
    956. 

  956.         <span class="bold"><strong>Effects</strong></span>: Returns the maximum length of the
    957. 

  957.         sequence of characters representing the regular expression.
    958. 

  958.       </p>
    959. 

  959. <a name="boost_regex.basic_regex.empty"></a><pre class="programlisting"><span class="keyword">bool</span> <span class="identifier">empty</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    960. 

  960. </pre>
    961. 

  961. <p>
    962. 

  962.         <span class="bold"><strong>Effects</strong></span>: Returns true if the object does
    963. 

  963.         not contain a valid regular expression, otherwise false.
    964. 

  964.       </p>
    965. 

  965. <a name="boost_regex.basic_regex.mark_count"></a><pre class="programlisting"><span class="identifier">size_type</span> <span class="identifier">mark_count</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    966. 

  966. </pre>
    967. 

  967. <p>
    968. 

  968.         <span class="bold"><strong>Effects</strong></span>: Returns the number of marked sub-expressions
    969. 

  969.         within the regular expression.
    970. 

  970.       </p>
    971. 

  971. <a name="boost_regex.basic_regex.assign1"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">assign</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">that</span><span class="special">);</span>
    972. 

  972. </pre>
    973. 

  973. <p>
    974. 

  974.         <span class="bold"><strong>Effects</strong></span>: Returns <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign4"><code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">that</span><span class="special">.</span><span class="identifier">str</span><span class="special">(),</span> <span class="identifier">that</span><span class="special">.</span><span class="identifier">flags</span><span class="special">())</span></code></a>.
    975. 

  975.       </p>
    976. 

  976. <a name="boost_regex.basic_regex.assign2"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">assign</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">ptr</span><span class="special">,</span> <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    977. 

  977. </pre>
    978. 

  978. <p>
    979. 

  979.         <span class="bold"><strong>Effects</strong></span>: Returns <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign4"><code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">string_type</span><span class="special">(</span><span class="identifier">ptr</span><span class="special">),</span> <span class="identifier">f</span><span class="special">)</span></code></a>.
    980. 

  980.       </p>
    981. 

  981. <a name="boost_regex.basic_regex.assign3"></a><pre class="programlisting"><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">assign</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">ptr</span><span class="special">,</span> <span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">len</span><span class="special">,</span> <span class="identifier">flag_type</span> <span class="identifier">f</span><span class="special">);</span>
    982. 

  982. </pre>
    983. 

  983. <p>
    984. 

  984.         <span class="bold"><strong>Effects</strong></span>: Returns <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign4"><code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">string_type</span><span class="special">(</span><span class="identifier">ptr</span><span class="special">,</span> <span class="identifier">len</span><span class="special">),</span> <span class="identifier">f</span><span class="special">)</span></code></a>.
    985. 

  985.       </p>
    986. 

  986. <a name="boost_regex.basic_regex.assign4"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">string_traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">&gt;</span>
    987. 

  987. <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">assign</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">string_traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
    988. 

  988.                   <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    989. 

  989. </pre>
    990. 

  990. <p>
    991. 

  991.         <span class="bold"><strong>Throws</strong></span>: <a class="link" href="bad_expression.html" title="bad_expression"><code class="computeroutput"><span class="identifier">bad_expression</span></code></a> if <span class="emphasis"><em>s</em></span>
    992. 

  992.         is not a valid regular expression, unless the flag <code class="computeroutput"><span class="identifier">no_except</span></code>
    993. 

  993.         is set in <span class="emphasis"><em>f</em></span>.
    994. 

  994.       </p>
    995. 

  995. <p>
    996. 

  996.         <span class="bold"><strong>Returns</strong></span>: *this.
    997. 

  997.       </p>
    998. 

  998. <p>
    999. 

  999.         <span class="bold"><strong>Effects</strong></span>: Assigns the regular expression
    1000. 

  1000.         contained in the string <span class="emphasis"><em>s</em></span>, interpreted according the
    1001. 

  1001.         <a class="link" href="syntax_option_type.html" title="syntax_option_type">option flags</a> specified
    1002. 

  1002.         in <span class="emphasis"><em>f</em></span>.
    1003. 

  1003.       </p>
    1004. 

  1004. <div class="table">
    1005. 

  1005. <a name="boost_regex.ref.basic_regex.postconditions_for_basic_regex_a"></a><p class="title"><b>Table&#160;7.&#160;Postconditions for basic_regex::assign</b></p>
    1006. 

  1006. <div class="table-contents"><table class="table" summary="Postconditions for basic_regex::assign">
    1007. 

  1007. <colgroup>
    1008. 

  1008. <col>
    1009. 

  1009. <col>
    1010. 

  1010. </colgroup>
    1011. 

  1011. <thead><tr>
    1012. 

  1012. <th>
    1013. 

  1013.                 <p>
    1014. 

  1014.                   Element
    1015. 

  1015.                 </p>
    1016. 

  1016.               </th>
    1017. 

  1017. <th>
    1018. 

  1018.                 <p>
    1019. 

  1019.                   Value
    1020. 

  1020.                 </p>
    1021. 

  1021.               </th>
    1022. 

  1022. </tr></thead>
    1023. 

  1023. <tbody>
    1024. 

  1024. <tr>
    1025. 

  1025. <td>
    1026. 

  1026.                 <p>
    1027. 

  1027.                   <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span></code>
    1028. 

  1028.                 </p>
    1029. 

  1029.               </td>
    1030. 

  1030. <td>
    1031. 

  1031.                 <p>
    1032. 

  1032.                   <code class="computeroutput"><span class="keyword">false</span></code>
    1033. 

  1033.                 </p>
    1034. 

  1034.               </td>
    1035. 

  1035. </tr>
    1036. 

  1036. <tr>
    1037. 

  1037. <td>
    1038. 

  1038.                 <p>
    1039. 

  1039.                   <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code>
    1040. 

  1040.                 </p>
    1041. 

  1041.               </td>
    1042. 

  1042. <td>
    1043. 

  1043.                 <p>
    1044. 

  1044.                   <code class="computeroutput"><span class="identifier">s</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span></code>
    1045. 

  1045.                 </p>
    1046. 

  1046.               </td>
    1047. 

  1047. </tr>
    1048. 

  1048. <tr>
    1049. 

  1049. <td>
    1050. 

  1050.                 <p>
    1051. 

  1051.                   <code class="computeroutput"><span class="identifier">str</span><span class="special">()</span></code>
    1052. 

  1052.                 </p>
    1053. 

  1053.               </td>
    1054. 

  1054. <td>
    1055. 

  1055.                 <p>
    1056. 

  1056.                   <span class="emphasis"><em>s</em></span>
    1057. 

  1057.                 </p>
    1058. 

  1058.               </td>
    1059. 

  1059. </tr>
    1060. 

  1060. <tr>
    1061. 

  1061. <td>
    1062. 

  1062.                 <p>
    1063. 

  1063.                   <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span></code>
    1064. 

  1064.                 </p>
    1065. 

  1065.               </td>
    1066. 

  1066. <td>
    1067. 

  1067.                 <p>
    1068. 

  1068.                   <span class="emphasis"><em>f</em></span>
    1069. 

  1069.                 </p>
    1070. 

  1070.               </td>
    1071. 

  1071. </tr>
    1072. 

  1072. <tr>
    1073. 

  1073. <td>
    1074. 

  1074.                 <p>
    1075. 

  1075.                   <code class="computeroutput"><span class="identifier">mark_count</span><span class="special">()</span></code>
    1076. 

  1076.                 </p>
    1077. 

  1077.               </td>
    1078. 

  1078. <td>
    1079. 

  1079.                 <p>
    1080. 

  1080.                   The number of marked sub-expressions within the expression.
    1081. 

  1081.                 </p>
    1082. 

  1082.               </td>
    1083. 

  1083. </tr>
    1084. 

  1084. </tbody>
    1085. 

  1085. </table></div>
    1086. 

  1086. </div>
    1087. 

  1087. <br class="table-break"><a name="boost_regex.basic_regex.assign5"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">InputIterator</span><span class="special">&gt;</span>
    1088. 

  1088. <span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">assign</span><span class="special">(</span><span class="identifier">InputIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">InputIterator</span> <span class="identifier">last</span><span class="special">,</span>
    1089. 

  1089.                     <span class="identifier">flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
    1090. 

  1090. </pre>
    1091. 

  1091. <p>
    1092. 

  1092.         <span class="bold"><strong>Requires</strong></span>: The type <code class="computeroutput"><span class="identifier">InputIterator</span></code>
    1093. 

  1093.         corresponds to the <a href="http://input_iterator" target="_top">Input Iterator requirements
    1094. 

  1094.         (24.1.1)</a>.
    1095. 

  1095.       </p>
    1096. 

  1096. <p>
    1097. 

  1097.         <span class="bold"><strong>Effects</strong></span>: Returns <a class="link" href="basic_regex.html#boost_regex.basic_regex.assign4"><code class="computeroutput"><span class="identifier">assign</span><span class="special">(</span><span class="identifier">string_type</span><span class="special">(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">last</span><span class="special">),</span> <span class="identifier">f</span><span class="special">)</span></code></a>.
    1098. 

  1098.       </p>
    1099. 

  1099. <a name="boost_regex.basic_regex.flags"></a><pre class="programlisting"><span class="identifier">flag_type</span> <span class="identifier">flags</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    1100. 

  1100. </pre>
    1101. 

  1101. <p>
    1102. 

  1102.         <span class="bold"><strong>Effects</strong></span>: Returns a copy of the <a class="link" href="syntax_option_type.html" title="syntax_option_type">regular
    1103. 

  1103.         expression syntax flags</a> that were passed to the object's constructor,
    1104. 

  1104.         or the last call to <code class="computeroutput"><span class="identifier">assign</span></code>.
    1105. 

  1105.       </p>
    1106. 

  1106. <a name="boost_regex.basic_regex.status"></a><pre class="programlisting"><span class="keyword">int</span> <span class="identifier">status</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    1107. 

  1107. </pre>
    1108. 

  1108. <p>
    1109. 

  1109.         <span class="bold"><strong>Effects</strong></span>: Returns zero if the expression
    1110. 

  1110.         contains a valid regular expression, otherwise an error code. This member
    1111. 

  1111.         function is retained for use in environments that cannot use exception handling.
    1112. 

  1112.       </p>
    1113. 

  1113. <a name="boost_regex.basic_regex.str"></a><pre class="programlisting"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;</span> <span class="identifier">str</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    1114. 

  1114. </pre>
    1115. 

  1115. <p>
    1116. 

  1116.         <span class="bold"><strong>Effects</strong></span>: Returns a copy of the character
    1117. 

  1117.         sequence passed to the object's constructor, or the last call to assign.
    1118. 

  1118.       </p>
    1119. 

  1119. <a name="boost_regex.basic_regex.compare"></a><pre class="programlisting"><span class="keyword">int</span> <span class="identifier">compare</span><span class="special">(</span><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">e</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
    1120. 

  1120. </pre>
    1121. 

  1121. <p>
    1122. 

  1122.         <span class="bold"><strong>Effects</strong></span>: If <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span> <span class="special">==</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">flags</span><span class="special">()</span></code> then returns <code class="computeroutput"><span class="identifier">str</span><span class="special">().</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">e</span><span class="special">.</span><span class="identifier">str</span><span class="special">())</span></code>,
    1123. 

  1123.         otherwise returns <code class="computeroutput"><span class="identifier">flags</span><span class="special">()</span>
    1124. 

  1124.         <span class="special">-</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">flags</span><span class="special">()</span></code>.
    1125. 

  1125.       </p>
    1126. 

  1126. <a name="boost_regex.basic_regex.imbue"></a><pre class="programlisting"><span class="identifier">locale_type</span> <span class="identifier">imbue</span><span class="special">(</span><span class="identifier">locale_type</span> <span class="identifier">l</span><span class="special">);</span>
    1127. 

  1127. </pre>
    1128. 

  1128. <p>
    1129. 

  1129.         <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">traits_inst</span><span class="special">.</span><span class="identifier">imbue</span><span class="special">(</span><span class="identifier">l</span><span class="special">)</span></code> where
    1130. 

  1130.         <code class="computeroutput"><span class="identifier">traits_inst</span></code> is a (default
    1131. 

  1131.         initialized) instance of the template parameter <code class="computeroutput"><span class="identifier">traits</span></code>
    1132. 

  1132.         stored within the object. Calls to <code class="computeroutput"><span class="identifier">imbue</span></code>
    1133. 

  1133.         invalidate any currently contained regular expression.
    1134. 

  1134.       </p>
    1135. 

  1135. <p>
    1136. 

  1136.         <span class="bold"><strong>Postcondition</strong></span>: <code class="computeroutput"><span class="identifier">empty</span><span class="special">()</span> <span class="special">==</span> <span class="keyword">true</span></code>.
    1137. 

  1137.       </p>
    1138. 

  1138. <a name="boost_regex.basic_regex.getloc"></a><pre class="programlisting"><span class="identifier">locale_type</span> <span class="identifier">getloc</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
    1139. 

  1139. </pre>
    1140. 

  1140. <p>
    1141. 

  1141.         <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">traits_inst</span><span class="special">.</span><span class="identifier">getloc</span><span class="special">()</span></code>
    1142. 

  1142.         where <code class="computeroutput"><span class="identifier">traits_inst</span></code> is a (default
    1143. 

  1143.         initialized) instance of the template parameter traits stored within the
    1144. 

  1144.         object.
    1145. 

  1145.       </p>
    1146. 

  1146. <a name="boost_regex.basic_regex.swap"></a><pre class="programlisting"><span class="keyword">void</span> <span class="identifier">swap</span><span class="special">(</span><span class="identifier">basic_regex</span><span class="special">&amp;</span> <span class="identifier">e</span><span class="special">)</span> <span class="keyword">throw</span><span class="special">();</span>
    1147. 

  1147. </pre>
    1148. 

  1148. <p>
    1149. 

  1149.         <span class="bold"><strong>Effects</strong></span>: Swaps the contents of the two regular
    1150. 

  1150.         expressions.
    1151. 

  1151.       </p>
    1152. 

  1152. <p>
    1153. 

  1153.         <span class="bold"><strong>Postcondition</strong></span>: <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> contains the regular expression that
    1154. 

  1154.         was in <span class="emphasis"><em>e</em></span>, <span class="emphasis"><em>e</em></span> contains the regular
    1155. 

  1155.         expression that was in <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>.
    1156. 

  1156.       </p>
    1157. 

  1157. <p>
    1158. 

  1158.         <span class="bold"><strong>Complexity</strong></span>: constant time.
    1159. 

  1159.       </p>
    1160. 

  1160. <div class="note"><table border="0" summary="Note">
    1161. 

  1161. <tr>
    1162. 

  1162. <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../doc/src/images/note.png"></td>
    1163. 

  1163. <th align="left">Note</th>
    1164. 

  1164. </tr>
    1165. 

  1165. <tr><td align="left" valign="top"><p>
    1166. 

  1166.           Comparisons between <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a> objects are provided
    1167. 

  1167.           on an experimental basis: please note that these are not present in the
    1168. 

  1168.           <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf" target="_top">Technical
    1169. 

  1169.           Report on C++ Library Extensions</a>, so use with care if you are writing
    1170. 

  1170.           code that may need to be ported to other implementations of <a class="link" href="basic_regex.html" title="basic_regex"><code class="computeroutput"><span class="identifier">basic_regex</span></code></a>.
    1171. 

  1171.         </p></td></tr>
    1172. 

  1172. </table></div>
    1173. 

  1173. <a name="boost_regex.basic_regex.op_eq"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1174. 

  1174. <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1175. 

  1175.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1176. 

  1176. </pre>
    1177. 

  1177. <p>
    1178. 

  1178.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
    1179. 

  1179.         <span class="special">==</span> <span class="number">0</span></code>.
    1180. 

  1180.       </p>
    1181. 

  1181. <a name="boost_regex.basic_regex.op_ne"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1182. 

  1182. <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1183. 

  1183.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1184. 

  1184. </pre>
    1185. 

  1185. <p>
    1186. 

  1186.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
    1187. 

  1187.         <span class="special">!=</span> <span class="number">0</span></code>.
    1188. 

  1188.       </p>
    1189. 

  1189. <a name="boost_regex.basic_regex.op_lt"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1190. 

  1190. <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1191. 

  1191.                <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1192. 

  1192. </pre>
    1193. 

  1193. <p>
    1194. 

  1194.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
    1195. 

  1195.         <span class="special">&lt;</span> <span class="number">0</span></code>.
    1196. 

  1196.       </p>
    1197. 

  1197. <a name="boost_regex.basic_regex.op_le"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1198. 

  1198. <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1199. 

  1199.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1200. 

  1200. </pre>
    1201. 

  1201. <p>
    1202. 

  1202.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
    1203. 

  1203.         <span class="special">&lt;=</span> <span class="number">0</span></code>.
    1204. 

  1204.       </p>
    1205. 

  1205. <a name="boost_regex.basic_regex.op_ge"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1206. 

  1206. <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1207. 

  1207.                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1208. 

  1208. </pre>
    1209. 

  1209. <p>
    1210. 

  1210.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
    1211. 

  1211.         <span class="special">&gt;=</span> <span class="number">0</span></code>.
    1212. 

  1212.       </p>
    1213. 

  1213. <a name="boost_regex.basic_regex.op_gt"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1214. 

  1214. <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1215. 

  1215.                <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1216. 

  1216. </pre>
    1217. 

  1217. <p>
    1218. 

  1218.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
    1219. 

  1219.         <span class="special">&gt;</span> <span class="number">0</span></code>.
    1220. 

  1220.       </p>
    1221. 

  1221. <div class="note"><table border="0" summary="Note">
    1222. 

  1222. <tr>
    1223. 

  1223. <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../doc/src/images/note.png"></td>
    1224. 

  1224. <th align="left">Note</th>
    1225. 

  1225. </tr>
    1226. 

  1226. <tr><td align="left" valign="top"><p>
    1227. 

  1227.           The basic_regex stream inserter is provided on an experimental basis, and
    1228. 

  1228.           outputs the textual representation of the expression to the stream.
    1229. 

  1229.         </p></td></tr>
    1230. 

  1230. </table></div>
    1231. 

  1231. <a name="boost_regex.basic_regex.op_stream"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">io_traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">re_traits</span><span class="special">&gt;</span>
    1232. 

  1232. <span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">io_traits</span><span class="special">&gt;&amp;</span>
    1233. 

  1233.    <span class="keyword">operator</span> <span class="special">&lt;&lt;</span> <span class="special">(</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">io_traits</span><span class="special">&gt;&amp;</span> <span class="identifier">os</span>
    1234. 

  1234.                <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">re_traits</span><span class="special">&gt;&amp;</span> <span class="identifier">e</span><span class="special">);</span>
    1235. 

  1235. </pre>
    1236. 

  1236. <p>
    1237. 

  1237.         <span class="bold"><strong>Effects</strong></span>: Returns <code class="computeroutput"><span class="special">(</span><span class="identifier">os</span> <span class="special">&lt;&lt;</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">str</span><span class="special">())</span></code>.
    1238. 

  1238.       </p>
    1239. 

  1239. <a name="boost_regex.basic_regex.op_swap"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">&gt;</span>
    1240. 

  1240. <span class="keyword">void</span> <span class="identifier">swap</span><span class="special">(</span><span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
    1241. 

  1241.          <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
    1242. 

  1242. </pre>
    1243. 

  1243. <p>
    1244. 

  1244.         <span class="bold"><strong>Effects</strong></span>: calls <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">swap</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span></code>.
    1245. 

  1245.       </p>
    1246. 

  1246. </div>
    1247. 

  1247. <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
    1248. 

  1248. <td align="left"></td>
    1249. 

  1249. <td align="right"><div class="copyright-footer">Copyright &#169; 1998-2013 John Maddock<p>
    1250. 

  1250.         Distributed under the Boost Software License, Version 1.0. (See accompanying
    1251. 

  1251.         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>)
    1252. 

  1252.       </p>
    1253. 

  1253. </div></td>
    1254. 

  1254. </tr></table>
    1255. 

  1255. <hr>
    1256. 

  1256. <div class="spirit-nav">
    1257. 

  1257. <a accesskey="p" href="../ref.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="match_results.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a>
    1258. 

  1258. </div>
    1259. 

  1259. </body>
    1260. 

  1260. </html>
    1261.