">A</span><span class="special">,</span> <span class="identifier">D</span> <span class="special">&gt;</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Y<span class="special">&gt;</span> weak_ptr&amp; <a class="link" href="weak_ptr.html#idp56985040-bb"><span class="keyword">operator</span><span class="special">=</