tion_handler_type</a>
</h4></div></div></div>
<p>
          <a class="indexterm" name="boost_asio.indexterm.async_result_lt__std__packaged_task_lt__Result_lp_Args_ellipsis__rp__gt__comma__Signature__gt_.completion_handler_type"></a> 
The packaged
          task is the concrete completion handler type.
        </p>
<pre class="programlisting">typedef std::packaged_task&lt; Result(Args...)&gt; completion_handler_type;
</pre>
<h6>
<a name="boost_asio.reference.async_result_lt__std__packaged_task_lt__Result_lp_