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<a name="boost_asio.reference.ConstBufferSequence"></a><a class="link" href="ConstBufferSequence.html" title="Constant buffer sequence requirements">Constant buffer

sequence requirements</a>

</h3></div></div></div>

In the table below, <code class="computeroutput">X</code> denotes

a class containing objects of type <code class="computeroutput">T</code>,

<code class="computeroutput">a</code> denotes a value of type

denotes an identifier.

<a name="boost_asio.reference.ConstBufferSequence.t0"></a>Table 5. ConstBufferSequence requirements

<col>

</colgroup>

<th>

expression

</th>

<th>

return type

</th>

<th>

assertion/note pre/post-condition

</th>

</tr></thead>

<tbody>

<tr>

<td>

<code class="computeroutput">X::value_type</code>

</td>

<td>

</td>

<td>

<code class="computeroutput">T</code> meets the requirements

for <a class="link" href="ConvertibleToConstBuffer.html" title="Convertible to const buffer requirements">ConvertibleToConstBuffer</a>.

</td>

</tr>

<tr>

<td>

<code class="computeroutput">X::const_iterator</code>

</td>

<td>

iterator type pointing to <code class="computeroutput">T</code>

</td>

<td>

<code class="computeroutput">const_iterator</code>

meets the requirements for bidirectional iterators (C++ Std, 24.1.4).

</td>

</tr>

<tr>

100

<td>

101

102

103

104

</td>

105

<td>

106

</td>

107

<td>

108

109

post: <code class="computeroutput">equal_const_buffer_seq(a, X(a))</code> where the binary predicate <code class="computeroutput">equal_const_buffer_seq</code> is defined

110

111

112

<pre class="programlisting">bool equal_const_buffer_seq(

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const X& x1, const X& x2)

114

{

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return

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distance(x1.begin(), x1.end())

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== distance(x2.begin(), x2.end())

118

&& equal(x1.begin(), x1.end(),

119

x2.begin(), equal_buffer);

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}

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</pre>

122

123

and the binary predicate <code class="computeroutput">equal_buffer</code>

124

is defined as

125

126

<pre class="programlisting">bool equal_buffer(

127

const X::value_type& v1,

128

129

{

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const_buffer b1(v1);

131

const_buffer b2(v2);

132

return

133

buffer_cast<const void*>(b1)

134

== buffer_cast<const void*>(b2)

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&& buffer_size(b1) == buffer_size(b2);

136

}

137

</pre>

138

139

140

</td>

141

</tr>

142

<tr>

143

<td>

144

145

146

147

</td>

148

<td>

149

</td>

150

<td>

151

152

post:

153

154

<pre class="programlisting">distance(a.begin(), a.end())

155

== distance(u.begin(), u.end())

156

&& equal(a.begin(), a.end(),

157

u.begin(), equal_buffer)

158

</pre>

159

160

where the binary predicate <code class="computeroutput">equal_buffer</code>

161

is defined as

162

163

<pre class="programlisting">bool equal_buffer(

164

165

166

{

167

const_buffer b1(v1);

168

const_buffer b2(v2);

169

return

170

171

172

173

}

174

</pre>

175

176

177

</td>

178

</tr>

179

<tr>

180

<td>

181

182

183

184

</td>

185

<td>

186

187

188

189

</td>

190

<td>

191

192

note: the destructor is applied to every element of <code class="computeroutput">a</code>; all the memory is deallocated.

193

194

</td>

195

</tr>

196

<tr>

197

<td>

198

199

<code class="computeroutput">a.begin();</code>

200

201

</td>

202

<td>

203

204

<code class="computeroutput">const_iterator</code>

205

or convertible to <code class="computeroutput">const_iterator</code>

206

207

</td>

208

<td>

209

</td>

210

</tr>

211

<tr>

212

<td>

213

214

215

216

</td>

217

<td>

218

219

<code class="computeroutput">const_iterator</code>

220

or convertible to <code class="computeroutput">const_iterator</code>

221

222

</td>

223

<td>

224

</td>

225

</tr>

226

</tbody>

227

</table></div>

228

</div>

229

230

</div>

231

232

233

234

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

235

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>)

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237

</div></td>

238

</tr></table>

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<hr>

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</div>

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</body>

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</html>

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