>(</span><span class="identifier">TypeIn</span> <span class="keyword">const</span> <span class="special">&amp;</span> value_in<span class="special">)</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp87434912"></a><h2>Description</h2>
<p>For example, </p>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">cnv</span><span class="special">::</span><span class="identifier"