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  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="beast.ref.boost__beast__http__is_mutable_body_writer"></a><a class="link" href="boost__beast__http__is_mutable_body_writer.html" title="http::is_mutable_body_writer">http::is_mutable_body_writer</a>
  28 </h4></div></div></div>
  29 <p>
  30         <a class="indexterm" name="idm45873496698416"></a>
  31 Determine if a type has a nested <span class="emphasis"><em>BodyWriter</em></span>.
  32       </p>
  33 <h5>
  34 <a name="beast.ref.boost__beast__http__is_mutable_body_writer.h0"></a>
  35         <span class="phrase"><a name="beast.ref.boost__beast__http__is_mutable_body_writer.synopsis"></a></span><a class="link" href="boost__beast__http__is_mutable_body_writer.html#beast.ref.boost__beast__http__is_mutable_body_writer.synopsis">Synopsis</a>
  36       </h5>
  37 <p>
  38         Defined in header <code class="literal">&lt;<a href="../../../../../../boost/beast/http/type_traits.hpp" target="_top">boost/beast/http/type_traits.hpp</a>&gt;</code>
  39       </p>
  40 <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
  41     <span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  42 <span class="keyword">using</span> <span class="identifier">is_mutable_body_writer</span> <span class="special">=</span> <span class="emphasis"><em>see-below</em></span><span class="special">;</span>
  43 </pre>
  44 <h5>
  45 <a name="beast.ref.boost__beast__http__is_mutable_body_writer.h1"></a>
  46         <span class="phrase"><a name="beast.ref.boost__beast__http__is_mutable_body_writer.description"></a></span><a class="link" href="boost__beast__http__is_mutable_body_writer.html#beast.ref.boost__beast__http__is_mutable_body_writer.description">Description</a>
  47       </h5>
  48 <p>
  49         This alias template is <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">true_type</span></code>
  50         when:
  51       </p>
  52 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
  53 <li class="listitem">
  54             <code class="computeroutput"><span class="identifier">T</span></code> has a nested type named
  55             <code class="computeroutput"><span class="identifier">writer</span></code>
  56           </li>
  57 <li class="listitem">
  58             <code class="computeroutput"><span class="identifier">writer</span></code> meets the requirements
  59             of <span class="emphasis"><em>BodyWriter</em></span>.
  60           </li>
  61 </ul></div>
  62 <h5>
  63 <a name="beast.ref.boost__beast__http__is_mutable_body_writer.h2"></a>
  64         <span class="phrase"><a name="beast.ref.boost__beast__http__is_mutable_body_writer.template_parameters"></a></span><a class="link" href="boost__beast__http__is_mutable_body_writer.html#beast.ref.boost__beast__http__is_mutable_body_writer.template_parameters">Template
  65         Parameters</a>
  66       </h5>
  67 <div class="informaltable"><table class="table">
  68 <colgroup>
  69 <col>
  70 <col>
  71 </colgroup>
  72 <thead><tr>
  73 <th>
  74                 <p>
  75                   Type
  76                 </p>
  77               </th>
  78 <th>
  79                 <p>
  80                   Description
  81                 </p>
  82               </th>
  83 </tr></thead>
  84 <tbody><tr>
  85 <td>
  86                 <p>
  87                   <code class="computeroutput"><span class="identifier">T</span></code>
  88                 </p>
  89               </td>
  90 <td>
  91                 <p>
  92                   The body type to test.
  93                 </p>
  94               </td>
  95 </tr></tbody>
  96 </table></div>
  97 <p>
  98         Convenience header <code class="literal">&lt;<a href="../../../../../../boost/beast/http.hpp" target="_top">boost/beast/http.hpp</a>&gt;</code>
  99       </p>
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