</td>
     <td> Informs the UpdatableQueue that the program has modified the position of <tt>t</tt> in the ordering </td>
     </tr>

<tr> <td> <tt><i>unspecified-bool-type</i> contains(const T& t) const</tt> </td>
     <td> Returns whether the queue contains <tt>t</tt> </td>
     </tr>

</table>

<h3>Concept Checking Class</h3>

<p><a href="../../../boost/graph/buffer_concepts.hpp"><tt>boost/graph/buffer_concepts.hpp</tt></a>

<pre>
  template &lt;class Q&gt;
  struct UpdatableQueueConcept
  {
    void con