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<div class="titlepage"><div><div><h3 class="title">
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<a name="high_level_components.init_hpp.example"></a><a class="link" href="example.html" title="Example">Example</a>
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</h3></div></div></div>
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<p>
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Given the C++ declarations:
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</p>
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<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">Y</span><span class="special">;</span>
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<span class="keyword">class</span> <span class="identifier">X</span>
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<span class="special">{</span>
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<span class="keyword">public</span><span class="special">:</span>
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<span class="identifier">X</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">x</span><span class="special">,</span> <span class="identifier">Y</span><span class="special">*</span> <span class="identifier">y</span><span class="special">)</span> <span class="special">:</span> <span class="identifier">m_y</span><span class="special">(</span><span class="identifier">y</span><span class="special">)</span> <span class="special">{}</span>
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<span class="identifier">X</span><span class="special">(</span><span class="keyword">double</span><span class="special">);</span>
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<span class="keyword">private</span><span class="special">:</span>
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<span class="identifier">Y</span><span class="special">*</span> <span class="identifier">m_y</span><span class="special">;</span>
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<span class="special">};</span>
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</pre>
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<p>
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A corresponing Boost.Python extension class can be created with:
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</p>
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<pre class="programlisting"><span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">python</span><span class="special">;</span>
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<span class="identifier">class_</span><span class="special"><</span><span class="identifier">X</span><span class="special">>(</span><span class="string">"X"</span><span class="special">,</span> <span class="string">"This is X's docstring."</span><span class="special">,</span>
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<span class="identifier">init</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">char</span> <span class="keyword">const</span><span class="special">*>(</span><span class="identifier">args</span><span class="special">(</span><span class="string">"x"</span><span class="special">,</span><span class="string">"y"</span><span class="special">),</span> <span class="string">"X.__init__'s docstring"</span><span class="special">)[</span>
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<span class="identifier">with_custodian_and_ward</span><span class="special"><</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">>()]</span>
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<span class="special">)</span>
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<span class="special">.</span><span class="identifier">def</span><span class="special">(</span><span class="identifier">init</span><span class="special"><</span><span class="keyword">double</span><span class="special">>())</span>
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<span class="special">;</span>
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</pre>
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<td align="right"><div class="copyright-footer">Copyright © 2002-2005, 2015 David Abrahams, Stefan Seefeld<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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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