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  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="boost_asio.reference.async_write_at"></a><a class="link" href="async_write_at.html" title="async_write_at">async_write_at</a>
  28 </h3></div></div></div>
  29 <p>
  30         <a class="indexterm" name="idp118909376"></a>
  31 Start an asynchronous operation to write a certain amount of
  32         data at the specified offset.
  33       </p>
  34 <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
  35     <span class="keyword">typename</span> <a class="link" href="AsyncRandomAccessWriteDevice.html" title="Buffer-oriented asynchronous random-access write device requirements">AsyncRandomAccessWriteDevice</a><span class="special">,</span>
  36     <span class="keyword">typename</span> <a class="link" href="ConstBufferSequence.html" title="Constant buffer sequence requirements">ConstBufferSequence</a><span class="special">,</span>
  37     <span class="keyword">typename</span> <a class="link" href="WriteHandler.html" title="Write handler requirements">WriteHandler</a><span class="special">&gt;</span>
  38 <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> <a class="link" href="async_write_at/overload1.html" title="async_write_at (1 of 4 overloads)">async_write_at</a><span class="special">(</span>
  39     <span class="identifier">AsyncRandomAccessWriteDevice</span> <span class="special">&amp;</span> <span class="identifier">d</span><span class="special">,</span>
  40     <span class="identifier">uint64_t</span> <span class="identifier">offset</span><span class="special">,</span>
  41     <span class="keyword">const</span> <span class="identifier">ConstBufferSequence</span> <span class="special">&amp;</span> <span class="identifier">buffers</span><span class="special">,</span>
  42     <span class="identifier">WriteHandler</span> <span class="identifier">handler</span><span class="special">);</span>
  43   <span class="emphasis"><em>&#187; <a class="link" href="async_write_at/overload1.html" title="async_write_at (1 of 4 overloads)">more...</a></em></span>
  44
  45 <span class="keyword">template</span><span class="special">&lt;</span>
  46     <span class="keyword">typename</span> <a class="link" href="AsyncRandomAccessWriteDevice.html" title="Buffer-oriented asynchronous random-access write device requirements">AsyncRandomAccessWriteDevice</a><span class="special">,</span>
  47     <span class="keyword">typename</span> <a class="link" href="ConstBufferSequence.html" title="Constant buffer sequence requirements">ConstBufferSequence</a><span class="special">,</span>
  48     <span class="keyword">typename</span> <span class="identifier">CompletionCondition</span><span class="special">,</span>
  49     <span class="keyword">typename</span> <a class="link" href="WriteHandler.html" title="Write handler requirements">WriteHandler</a><span class="special">&gt;</span>
  50 <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> <a class="link" href="async_write_at/overload2.html" title="async_write_at (2 of 4 overloads)">async_write_at</a><span class="special">(</span>
  51     <span class="identifier">AsyncRandomAccessWriteDevice</span> <span class="special">&amp;</span> <span class="identifier">d</span><span class="special">,</span>
  52     <span class="identifier">uint64_t</span> <span class="identifier">offset</span><span class="special">,</span>
  53     <span class="keyword">const</span> <span class="identifier">ConstBufferSequence</span> <span class="special">&amp;</span> <span class="identifier">buffers</span><span class="special">,</span>
  54     <span class="identifier">CompletionCondition</span> <span class="identifier">completion_condition</span><span class="special">,</span>
  55     <span class="identifier">WriteHandler</span> <span class="identifier">handler</span><span class="special">);</span>
  56   <span class="emphasis"><em>&#187; <a class="link" href="async_write_at/overload2.html" title="async_write_at (2 of 4 overloads)">more...</a></em></span>
  57
  58 <span class="keyword">template</span><span class="special">&lt;</span>
  59     <span class="keyword">typename</span> <a class="link" href="AsyncRandomAccessWriteDevice.html" title="Buffer-oriented asynchronous random-access write device requirements">AsyncRandomAccessWriteDevice</a><span class="special">,</span>
  60     <span class="keyword">typename</span> <span class="identifier">Allocator</span><span class="special">,</span>
  61     <span class="keyword">typename</span> <a class="link" href="WriteHandler.html" title="Write handler requirements">WriteHandler</a><span class="special">&gt;</span>
  62 <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> <a class="link" href="async_write_at/overload3.html" title="async_write_at (3 of 4 overloads)">async_write_at</a><span class="special">(</span>
  63     <span class="identifier">AsyncRandomAccessWriteDevice</span> <span class="special">&amp;</span> <span class="identifier">d</span><span class="special">,</span>
  64     <span class="identifier">uint64_t</span> <span class="identifier">offset</span><span class="special">,</span>
  65     <span class="identifier">basic_streambuf</span><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span> <span class="special">&amp;</span> <span class="identifier">b</span><span class="special">,</span>
  66     <span class="identifier">WriteHandler</span> <span class="identifier">handler</span><span class="special">);</span>
  67   <span class="emphasis"><em>&#187; <a class="link" href="async_write_at/overload3.html" title="async_write_at (3 of 4 overloads)">more...</a></em></span>
  68
  69 <span class="keyword">template</span><span class="special">&lt;</span>
  70     <span class="keyword">typename</span> <a class="link" href="AsyncRandomAccessWriteDevice.html" title="Buffer-oriented asynchronous random-access write device requirements">AsyncRandomAccessWriteDevice</a><span class="special">,</span>
  71     <span class="keyword">typename</span> <span class="identifier">Allocator</span><span class="special">,</span>
  72     <span class="keyword">typename</span> <span class="identifier">CompletionCondition</span><span class="special">,</span>
  73     <span class="keyword">typename</span> <a class="link" href="WriteHandler.html" title="Write handler requirements">WriteHandler</a><span class="special">&gt;</span>
  74 <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> <a class="link" href="async_write_at/overload4.html" title="async_write_at (4 of 4 overloads)">async_write_at</a><span class="special">(</span>
  75     <span class="identifier">AsyncRandomAccessWriteDevice</span> <span class="special">&amp;</span> <span class="identifier">d</span><span class="special">,</span>
  76     <span class="identifier">uint64_t</span> <span class="identifier">offset</span><span class="special">,</span>
  77     <span class="identifier">basic_streambuf</span><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span> <span class="special">&amp;</span> <span class="identifier">b</span><span class="special">,</span>
  78     <span class="identifier">CompletionCondition</span> <span class="identifier">completion_condition</span><span class="special">,</span>
  79     <span class="identifier">WriteHandler</span> <span class="identifier">handler</span><span class="special">);</span>
  80   <span class="emphasis"><em>&#187; <a class="link" href="async_write_at/overload4.html" title="async_write_at (4 of 4 overloads)">more...</a></em></span>
  81 </pre>
  82 <h5>
  83 <a name="boost_asio.reference.async_write_at.h0"></a>
  84         <span class="phrase"><a name="boost_asio.reference.async_write_at.requirements"></a></span><a class="link" href="async_write_at.html#boost_asio.reference.async_write_at.requirements">Requirements</a>
  85       </h5>
  86 <p>
  87         <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/write_at.hpp</code>
  88       </p>
  89 <p>
  90         <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
  91       </p>
  92 </div>
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  95 <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2014 Christopher M. Kohlhoff<p>
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