e>.
                  </li>
</ol></div>
<p>
                The third form is identical to the second, except that NextPolicies
                is an unspecified model of <a class="link" href="../concepts.html#concepts.callpolicies" title="CallPolicies">CallPolicies</a>
                which always makes a copy of the result of deferencing the underlying
                C++ iterator
              </p>
</dd>
<dt><span class="term">Rationale</span></dt>
<dd><p>
                The use of <code class="computer