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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.use_awaitable_t"></a><a class="link" href="use_awaitable_t.html" title="use_awaitable_t">use_awaitable_t</a>
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<p>
        A completion token that represents the currently executing coroutine.
      </p>
<pre class="programlisting">template&lt;
    typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a> = executor&gt;
struct use_awaitable_t
</pre>
<h5>
<a name="boost_asio.reference.use_awaitable_t.h0"></a>
        <span class="phrase"><a name="boost_asio.reference.use_awaitable_t.member_functions"></a></span><a class="link" href="use_awaitable_t.html#boost_asio.reference.use_awaitable_t.member_functions">Member Functions</a>
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                <p>
                  <a class="link" href="use_awaitable_t/use_awaitable_t.html" title="use_awaitable_t::use_awaitable_t"><span class="bold"><strong>use_awaitable_t</strong></span></a>
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<p>
        The <code class="computeroutput">use_awaitable_t</code> class, with its value <code class="computeroutput">use_awaitable</code>,
        is used to represent the currently executing coroutine. This completion token
        may be passed as a handler to an asynchronous operation. For example:
      </p>
<pre class="programlisting">awaitable&lt;void&gt; my_coroutine()
{
  std::size_t n = co_await my_socket.async_read_some(buffer, use_awaitable);
  ...
}
</pre>
<p>
        When used with co_await, the initiating function (<code class="computeroutput">async_read_some</code>
        in the above example) suspends the current coroutine. The coroutine is resumed
        when the asynchronous operation completes, and the result of the operation
        is returned.
      </p>
<h5>
<a name="boost_asio.reference.use_awaitable_t.h1"></a>
        <span class="phrase"><a name="boost_asio.reference.use_awaitable_t.requirements"></a></span><a class="link" href="use_awaitable_t.html#boost_asio.reference.use_awaitable_t.requirements">Requirements</a>
      </h5>
<p>
        <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/use_awaitable.hpp</code>
      </p>
<p>
        <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
      </p>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2019 Christopher M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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