• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1<html>
2<head>
3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
4<title>basic_flat_buffer::prepare</title>
5<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
7<link rel="home" href="../../../index.html" title="Chapter 1. Boost.Beast">
8<link rel="up" href="../boost__beast__basic_flat_buffer.html" title="basic_flat_buffer">
9<link rel="prev" href="cdata.html" title="basic_flat_buffer::cdata">
10<link rel="next" href="commit.html" title="basic_flat_buffer::commit">
11</head>
12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
13<table cellpadding="2" width="100%"><tr>
14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
15<td align="center"><a href="../../../../../../../index.html">Home</a></td>
16<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
19<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
20</tr></table>
21<hr>
22<div class="spirit-nav">
23<a accesskey="p" href="cdata.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost__beast__basic_flat_buffer.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="commit.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a>
24</div>
25<div class="section">
26<div class="titlepage"><div><div><h5 class="title">
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>
28</h5></div></div></div>
29<p>
30          <a class="indexterm" name="idm46057549095520"></a>
31        </p>
32<p>
33          Returns a mutable buffer sequence representing writable bytes.
34        </p>
35<h6>
36<a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h0"></a>
37          <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>
38        </h6>
39<pre class="programlisting"><span class="identifier">mutable_buffers_type</span>
40<span class="identifier">prepare</span><span class="special">(</span>
41    <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">n</span><span class="special">);</span>
42</pre>
43<h6>
44<a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h1"></a>
45          <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>
46        </h6>
47<p>
48          Returns a mutable buffer sequence representing the writable bytes containing
49          exactly <code class="computeroutput"><span class="identifier">n</span></code> bytes of storage.
50          Memory may be reallocated as needed. All buffers sequences previously obtained
51          using <a class="link" href="data/overload1.html" title="basic_flat_buffer::data (1 of 2 overloads)"><code class="computeroutput"><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">prepare</span></code></a> become invalid.
52        </p>
53<h6>
54<a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h2"></a>
55          <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>
56        </h6>
57<div class="informaltable"><table class="table">
58<colgroup>
59<col>
60<col>
61</colgroup>
62<thead><tr>
63<th>
64                  <p>
65                    Name
66                  </p>
67                </th>
68<th>
69                  <p>
70                    Description
71                  </p>
72                </th>
73</tr></thead>
74<tbody><tr>
75<td>
76                  <p>
77                    <code class="computeroutput"><span class="identifier">n</span></code>
78                  </p>
79                </td>
80<td>
81                  <p>
82                    The desired number of bytes in the returned buffer sequence.
83                  </p>
84                </td>
85</tr></tbody>
86</table></div>
87<h6>
88<a name="beast.ref.boost__beast__basic_flat_buffer.prepare.h3"></a>
89          <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>
90        </h6>
91<div class="informaltable"><table class="table">
92<colgroup>
93<col>
94<col>
95</colgroup>
96<thead><tr>
97<th>
98                  <p>
99                    Type
100                  </p>
101                </th>
102<th>
103                  <p>
104                    Thrown On
105                  </p>
106                </th>
107</tr></thead>
108<tbody><tr>
109<td>
110                  <p>
111                    <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">length_error</span></code>
112                  </p>
113                </td>
114<td>
115                  <p>
116                    if <a class="link" href="size.html" title="basic_flat_buffer::size"><code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code></a>
117                    + n exceeds either <a class="link" href="max_size/overload1.html" title="basic_flat_buffer::max_size (1 of 2 overloads)"><code class="computeroutput"><span class="identifier">max_size</span><span class="special">()</span></code></a>
118                    or the allocator's maximum 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>
131</div>
132<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
133<td align="left"></td>
134<td align="right"><div class="copyright-footer">Copyright © 2016-2019 Vinnie
135      Falco<p>
136        Distributed under the Boost Software License, Version 1.0. (See accompanying
137        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>)
138      </p>
139</div></td>
140</tr></table>
141<hr>
142<div class="spirit-nav">
143<a accesskey="p" href="cdata.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost__beast__basic_flat_buffer.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="commit.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a>
144</div>
145</body>
146</html>
147