pan>
      <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Histogram<span class="special">,</span> <span class="keyword">typename</span> Iterable<span class="special">&gt;</span> 
        <span class="keyword">decltype</span><span class="special">(</span><span class="keyword">auto</span><span class="special">)</span> <a class="link" href="../boost/histogram/algorithm/reduce_idm45105995171376.html" title="Function template reduce"><span class="ident