span class="special">&gt;</span> 
  <span class="keyword">bool</span> <a name="idm14195-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="category.html" title="Class template category">category</a><span class="special">&lt;</span> <span class="identifier">V</span><span class="special">,</span> <span class="identifier">M</span><span class="special">,</span> <span class="identifier">O</span><span c