an><span class="special">::</span><span class="identifier">vector</span><span class="special">&lt;</span><span class="identifier">QPoint</span><span class="special">*&gt;::</span><span class="identifier">iterator</span>
<span class="identifier">range_begin</span><span class="special">(</span><span class="identifier">QLineString</span><span class="special">&amp;</span> <span class="identifier">qls</span><span class="special">)</span> <span class="special">{</span><span class="keyword">return</span> <span cla