       end of the underlying range. A filter iterator is therefore constructed with
        pair of iterators indicating the range of elements in the unfiltered sequence
        to be traversed.
      </p>
<h3>
<a name="iterator.specialized.filter.h0"></a>
        <span class="phrase"><a name="iterator.specialized.filter.example"></a></span><a class="link" href="filter.html#iterator.specialized.filter.example">Example</a>
      </h3>
<p>
        This example uses <code class="computeroutput"><span class="id