pecial">::</span><span class="identifier">is_nary_parser</span><span class="special">&lt;</span><span class="identifier">P</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Metafunction that evaluates to <code class="computeroutput"><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></code>
                      if a certai