  </h6>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">SequenceOfSequences</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Func</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="identifier">n_ary_for_each</span><span class="special">(</span><span class="identifier">SequenceOfSequences</span> <span class="keyword">