lass="identifier">r</span><span class="special">.</span><span class="identifier">value_</span><span class="special">;</span>  <span class="special">}</span>
   <span class="comment">//...</span>
<span class="special">};</span>
</pre>
<p>
      </p>
<p>
        And include it only in the implementation file of <code class="computeroutput"><span class="identifier">MyClassHolder</span></code>
      </p>
<p>
</p>
<pre class="programlisting"><span class="comment">//MyClassHolder.cpp</span>

<span class="preproce