fier">Tag</span><span class="special">,</span> <span class="keyword">typename</span> <span class="special">...</span> <span class="identifier">BaseTags</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">tag_cast</span>
<span class="special">{</span>
  <span class="comment">// ...</span>
<span class="special">};</span>
</pre>
<p>
        </p>
<h6>
<a name="geometry.reference.core.tag_cast.h2"></a>
          <span class="phrase"><a name="geometry.reference.cor