l">adaptive_pool</a> <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> T2<span class="special">&gt;</span> 
    <a class="link" href="adaptive_pool.html#idp55961008-bb"><span class="identifier">adaptive_pool</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="adaptive_pool.html" title="Class template adaptive_p