<span class="special">::</span><span class="identifier">gregorian</span><span class="special">::</span><span class="identifier">date</span> <a name="boost.icl.operator++_idm35603"></a><span class="keyword">operator</span><span class="special">++</span><span class="special">(</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">&amp;</span> x<span class="spec