span>&#160;    <span class="keywordflow">while</span> (node != class_[node]) {</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;      <span class="keyword">const</span> <a class="code" href="namespaceoperations__research.html#a272bcc4d6ee0e87a7fc430a5cb13c582">NodeIndex</a> old_parent = class_[node];</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;      class_[node] = parent;</div>
<div class="line"><a name="l00117"></a><span class="line