an class="identifier">boost</span><span class="special">::</span><span class="identifier">make_shared</span><span class="special">&lt;</span> <span class="identifier">point_formatter_factory</span> <span class="special">&gt;());</span>
<span class="special">}</span>
</pre>
<p>
        </p>
<p>
          Let's walk through this code sample. Our <code class="computeroutput"><span class="identifier">point_formatter_factory</span></code>
          class derives from the <code class="computeroutput"><a class="li