 all in-edges from vertex <tt class="docutils literal"><span class="pre">u</span></tt>. The vertex still appears in
the vertex set of the graph.</p>
<p>The affect on descriptor and iterator stability is the same as that of
invoking <tt class="docutils literal"><span class="pre">remove_edge()</span></tt> for all of the edges that have <tt class="docutils literal"><span class="pre">u</span></tt> as the
target.</p>
<p>This operation is only applicable to bidirectional graphs.</p>
<hr class="docutils" />
<pre c