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<title>Method 1: provide member functions and nested types</title>
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<div class="titlepage"><div><div><h4 class="title">
<a name="range.reference.extending.method_1"></a><a class="link" href="method_1.html" title="Method 1: provide member functions and nested types"> Method 1: provide
member functions and nested types</a>
</h4></div></div></div>
<p>
This procedure assumes that you have control over the types that should
be made conformant to a Range concept. If not, see <a class="link" href="method_2.html" title="Method 2: provide free-standing functions and specialize metafunctions">method
2</a>.
</p>
<p>
The primary templates in this library are implemented such that standard
containers will work automatically and so will <a href="../../../../../../../libs/array/index.html" target="_top">boost::array</a>.
Below is given an overview of which member functions and member types a
class must specify to be useable as a certain Range concept.
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Member function
</p>
</th>
<th>
<p>
Related concept
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">begin</span><span class="special">()</span></code>
</p>
</td>
<td>
<p>
<a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
Range</a>
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">end</span><span class="special">()</span></code>
</p>
</td>
<td>
<p>
<a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
Range</a>
</p>
</td>
</tr>
</tbody>
</table></div>
<p>
Notice that <code class="computeroutput"><span class="identifier">rbegin</span><span class="special">()</span></code>
and <code class="computeroutput"><span class="identifier">rend</span><span class="special">()</span></code>
member functions are not needed even though the container can support bidirectional
iteration.
</p>
<p>
The required member types are:
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Member type
</p>
</th>
<th>
<p>
Related concept
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">iterator</span></code>
</p>
</td>
<td>
<p>
<a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
Range</a>
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">const_iterator</span></code>
</p>
</td>
<td>
<p>
<a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
Range</a>
</p>
</td>
</tr>
</tbody>
</table></div>
<p>
Again one should notice that member types <code class="computeroutput"><span class="identifier">reverse_iterator</span></code>
and <code class="computeroutput"><span class="identifier">const_reverse_iterator</span></code>
are not needed.
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003 -2010 Thorsten Ottosen, Neil Groves<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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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