ruct</span> <a class="link" href="../../../boost/icl/is_set_icl_interv_id661051.html" title="Struct template is_set&lt;icl::interval_set&lt; DomainT, Compare, Interval, Alloc &gt;&gt;">is_set</a><span class="special">&lt;</span><span class="identifier">icl</span><span class="special">::</span><span class="identifier">interval_set</span><span class="special">&lt;</span> <span class="identifier">DomainT</span><span class="special">,</span> <span class="identifier">Compare</span><span class="special">,</span> 