an class="keyword">bool</span> <a class="link" href="../boost/movelib/operat_1_3_25_20_14_3_1_11.html" title="Function template operator!="><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/movelib/unique_ptr.html" title="Class template unique_ptr">unique_ptr</a><span class="special">&lt;</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">D</span>