     of access and interpretation to the programmer. This niche is
        dominated by <code class="computeroutput">void *</code>, which offers plenty of scope
        for surprising, undefined behavior.</p></li>
</ul></div>
<p>The <code class="computeroutput"><a class="link" href="boost/any.html" title="Class any">boost::any</a></code> class
    (based on the class of the same name described in <a href="http://www.two-sdg.demon.co.uk/curbralan/papers/ValuedConversions.pdf" target="_top">"Valued
    Conver