pan class="identifier">is_stateless</span></code>
        only inherits from <a class="link" href="integral_constant.html" title="integral_constant">true_type</a>
        if the following expression is <code class="computeroutput"><span class="keyword">true</span></code>:
      </p>
<pre class="programlisting"><span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_trivial_constructor</span><span class="special">&lt;</span><span class="