entifier">someday</span> <span class="special">+</span> <span class="identifier">months</span><span class="special">(</span><span class="number">3</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">scope</span> <span class="special">=</span> <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identi