s="keyword">typename</span> Axis<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/axis/traits/value.html" title="Function template value"><span class="identifier">value</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Axis</span> <span class="special">&amp;</span><span class="special">,</span>