ass="keyword">bool</span> <a class="link" href="smart_library.html#idp28676496-bb"><span class="identifier">is_loaded</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="smart_library.html#idp28679472-bb"><span class="keyword">operator</span><span class="special">!</span></a><span class="special">(</span><span class="special">)</s