ng distance between two iterators.
        </li>
<li class="listitem">
          <a class="link" href="iterator/algorithms/next_prior.html" title="Function templates next() and prior()"><code class="computeroutput"><span class="identifier">next_prior</span><span class="special">.</span><span class="identifier">hpp</span></code></a>:
          Provides <code class="computeroutput"><span class="identifier">next</span><span class="special">()</span></code>
          and <code class="computeroutput"><span class