an><span class="special">(</span><span class="identifier">is_even</span><span class="special">(),</span> <span class="number">10</span><span class="special">),</span>
        <span class="identifier">std</span><span class="special">::</span><span class="identifier">ostream_iterator</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">