</span>&#160;    buffer_t _row_buffer;</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;};</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View, <span class="keyword">typename</span> D = <span class="keywordtype">void</span>&gt;</div><div class="line"><a name="l00173"></a><span 