e</a><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">gregorian</span><span class="special">::</span><span class="identifier">date</span><span class="special">&gt;</span><span class="special">;</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="special">&gt;</span> <span class="keyword">struct</span> <a class="link" href="../../../boost/icl/is_discrete_boost_idm35577.html" title="Struct is