r">iter</span>       <span class="special">=</span> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">begin</span><span class="special">();</span>
<span class="identifier">bm_type</span><span class="special">::</span><span class="identifier">left_iterator</span>  <span class="identifier">left_iter</span>  <span class="special">=</span> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span