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  27 <a name="boost_asio.reference.serial_port_service.async_read_some"></a><a class="link" href="async_read_some.html" title="serial_port_service::async_read_some">serial_port_service::async_read_some</a>
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  30           <a class="indexterm" name="idp191265392"></a>
  31 Start an asynchronous read.
  32         </p>
  33 <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
  34     <span class="keyword">typename</span> <a class="link" href="../MutableBufferSequence.html" title="Mutable buffer sequence requirements">MutableBufferSequence</a><span class="special">,</span>
  35     <span class="keyword">typename</span> <a class="link" href="../ReadHandler.html" title="Read handler requirements">ReadHandler</a><span class="special">&gt;</span>
  36 <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.return_type_of_an_initiating_function"><span class="emphasis"><em>void-or-deduced</em></span></a> <span class="identifier">async_read_some</span><span class="special">(</span>
  37     <span class="identifier">implementation_type</span> <span class="special">&amp;</span> <span class="identifier">impl</span><span class="special">,</span>
  38     <span class="keyword">const</span> <span class="identifier">MutableBufferSequence</span> <span class="special">&amp;</span> <span class="identifier">buffers</span><span class="special">,</span>
  39     <span class="identifier">ReadHandler</span> <span class="identifier">handler</span><span class="special">);</span>
  40 </pre>
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