     }
<a name="l00318"></a>00318     <span class="keywordflow">else</span> <span class="comment">// not neighhbors</span>
<a name="l00319"></a>00319     {
<a name="l00320"></a>00320         std::swap(m_prev, rhs.<a class="code" href="a00546.html#d2c2a5eef32dff46c332bd6ee8b0d68b">m_prev</a>);
<a name="l00321"></a>00321         std::swap(m_next, rhs.<a class="code" href="a00546.html#cca4cb9393a9bdd9c7998dde8cfe5308">m_next</a>);
<a name="l00322"></a>00322         std::swap(m_prev-&gt;<a class="code" href="a0