s="section" id="requirements">
<h2>Requirements<a class="headerlink" href="#requirements" title="Permalink to this headline">¶</a></h2>
<p>MetafunctionClass must be a:</p>
<ul class="simple">
<li><a class="reference internal" href="../../../doc/src/concepts.html#metafunctionclass"><span class="std std-ref">MetafunctionClass</span></a></li>
</ul>
<p>MetafunctionTemplate&lt;Ts...&gt; must be a:</p>
<ul class="simple">
<li><a class="reference internal" href="../../../doc/src/concepts.html#metafunction"><span 