ss="keyword">typename</span> Allocator<span class="special">&gt;</span> 
        <span class="keyword">class</span> <a class="link" href="../boost/histogram/axis/category.html" title="Class template category">category</a><span class="special">;</span>
    <span class="special">}</span>
  <span class="special">}</span>
<span class="special">}</span></pre>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="header.boost.histogram.axis.integer_hpp"></a>Header &lt;<a href="