">r</span><span class="special">.</span><span class="identifier">lines</span><span class="special">.</span><span class="identifier">begin</span><span class="special">());}</span>

<span class="keyword">inline</span> <span class="identifier">ConstRingIterator</span> <span class="identifier">range_begin</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">QRing</span><span class="special">&amp;</span> <span class="identifier">r</span><span class="special">)</span>
<s