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  27 <a name="beast.ref.boost__beast__basic_flat_buffer.prepare"></a><a class="link" href="prepare.html" title="basic_flat_buffer::prepare">basic_flat_buffer::prepare</a>
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  29 <p>
  30           <a class="indexterm" name="idm45873518876720"></a>
  31 Returns a mutable buffer sequence representing
  32           writable bytes.
  33         </p>
  34 <h6>
  35 <a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h0"></a>
  36           <span class="phrase"><a name="beast.ref.boost__beast__basic_flat_buffer.prepare.synopsis"></a></span><a class="link" href="prepare.html#beast.ref.boost__beast__basic_flat_buffer.prepare.synopsis">Synopsis</a>
  37         </h6>
  38 <pre class="programlisting"><span class="identifier">mutable_buffers_type</span>
  39 <span class="identifier">prepare</span><span class="special">(</span>
  40     <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">n</span><span class="special">);</span>
  41 </pre>
  42 <h6>
  43 <a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h1"></a>
  44           <span class="phrase"><a name="beast.ref.boost__beast__basic_flat_buffer.prepare.description"></a></span><a class="link" href="prepare.html#beast.ref.boost__beast__basic_flat_buffer.prepare.description">Description</a>
  45         </h6>
  46 <p>
  47           Returns a mutable buffer sequence representing the writable bytes containing
  48           exactly <code class="computeroutput"><span class="identifier">n</span></code> bytes of storage.
  49           Memory may be reallocated as needed. All buffers sequences previously obtained
  50           using <a class="link" href="data.html" title="basic_flat_buffer::data"><code class="computeroutput"><span class="identifier">basic_flat_buffer</span><span class="special">::</span><span class="identifier">data</span></code></a> or <a class="link" href="prepare.html" title="basic_flat_buffer::prepare"><code class="computeroutput"><span class="identifier">basic_flat_buffer</span><span class="special">::</span><span class="identifier">prepare</span></code></a> become invalid.
  51         </p>
  52 <h6>
  53 <a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h2"></a>
  54           <span class="phrase"><a name="beast.ref.boost__beast__basic_flat_buffer.prepare.parameters"></a></span><a class="link" href="prepare.html#beast.ref.boost__beast__basic_flat_buffer.prepare.parameters">Parameters</a>
  55         </h6>
  56 <div class="informaltable"><table class="table">
  57 <colgroup>
  58 <col>
  59 <col>
  60 </colgroup>
  61 <thead><tr>
  62 <th>
  63                   <p>
  64                     Name
  65                   </p>
  66                 </th>
  67 <th>
  68                   <p>
  69                     Description
  70                   </p>
  71                 </th>
  72 </tr></thead>
  73 <tbody><tr>
  74 <td>
  75                   <p>
  76                     <code class="computeroutput"><span class="identifier">n</span></code>
  77                   </p>
  78                 </td>
  79 <td>
  80                   <p>
  81                     The desired number of bytes in the returned buffer sequence.
  82                   </p>
  83                 </td>
  84 </tr></tbody>
  85 </table></div>
  86 <h6>
  87 <a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h3"></a>
  88           <span class="phrase"><a name="beast.ref.boost__beast__basic_flat_buffer.prepare.exceptions"></a></span><a class="link" href="prepare.html#beast.ref.boost__beast__basic_flat_buffer.prepare.exceptions">Exceptions</a>
  89         </h6>
  90 <div class="informaltable"><table class="table">
  91 <colgroup>
  92 <col>
  93 <col>
  94 </colgroup>
  95 <thead><tr>
  96 <th>
  97                   <p>
  98                     Type
  99                   </p>
 100                 </th>
 101 <th>
 102                   <p>
 103                     Thrown On
 104                   </p>
 105                 </th>
 106 </tr></thead>
 107 <tbody><tr>
 108 <td>
 109                   <p>
 110                     <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">length_error</span></code>
 111                   </p>
 112                 </td>
 113 <td>
 114                   <p>
 115                     if <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span>
 116                     <span class="special">+</span> <span class="identifier">n</span></code>
 117                     exceeds either <code class="computeroutput"><span class="identifier">max_size</span><span class="special">()</span></code> or the allocator's maximum
 118                     allocation size.
 119                   </p>
 120                 </td>
 121 </tr></tbody>
 122 </table></div>
 123 <h6>
 124 <a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h4"></a>
 125           <span class="phrase"><a name="beast.ref.boost__beast__basic_flat_buffer.prepare.exception_safety"></a></span><a class="link" href="prepare.html#beast.ref.boost__beast__basic_flat_buffer.prepare.exception_safety">Exception
 126           Safety</a>
 127         </h6>
 128 <p>
 129           Strong guarantee.
 130         </p>
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