></a><span class="identifier">difference_type</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="counting_iterator.html#boost.compute.counting_iteratorconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="counting_iterator.html#idp53396464-bb"><span class="identifier">counting_iterator</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">T</span> <span class="special">&amp;</span><span class="spe