 class="computeroutput"><span class="identifier">is_void</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> inherits
      from <code class="computeroutput"><a class="link" href="reference/integral_constant.html" title="integral_constant">true_type</a></code>
      only if <code class="computeroutput"><span class="identifier">T</span></code> is <code class="computeroutput"><span class="keyword">void</span></code>.
    </p>
<pre class="programlist