pecial>=</span><span class=identifier>ctor_args_list</span><span class=special>(),
    </span><span class=keyword>const</span> <span class=identifier>allocator_type</span><span class=special>&amp;</span> <span class=identifier>al</span><span class=special>=</span><span class=identifier>allocator_type</span><span class=special>());</span>
  <span class=keyword>explicit</span> <span class=identifier>multi_index_container</span><span class=special>(</span><span class=keyword>const</span> <span class=identifier