ial">;</span>
  <span class="keyword">void</span> <a class="link" href="signal.html#id-1_3_37_6_9_3_1_2_24_4-bb"><span class="identifier">disconnect_all_slots</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="signal.html#id-1_3_37_6_9_3_1_2_24_5-bb"><span class="identifier">empty</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="spec