="special">++</span><span class="identifier">week_iter</span><span class="special">)</span>
        <span class="identifier">weekends</span> <span class="special">+=</span> <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;::</span><span class="identifier">right_open</span><span class="special">(*</span><span class="identifier">week_iter</span><span class="special">,</span> <span class="special">*</span><span class