a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="keyword">struct </span>row_buffer_helper_view</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;&lt;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    View,</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    typename std::enable_if</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    &lt;</div><div 