Method async_write_some

include/boost/asio/impl/buffered_write_stream.hpp:353–365

    BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code,
      std::size_t)) WriteHandler>
inline auto buffered_write_stream<Stream>::async_write_some(
    const ConstBufferSequence& buffers, WriteHandler&& handler)
  -> decltype(
    async_initiate<WriteHandler,
      void (boost::system::error_code, std::size_t)>(
        declval<detail::initiate_async_buffered_write_some<Stream>>(),
        handler, declval<detail::buffered_stream_storage*>(), buffers))
{
  return async_initiate<WriteHandler,
    void (boost::system::error_code, std::size_t)>(
      detail::initiate_async_buffered_write_some<Stream>(next_layer_),
      handler, &storage_, buffers);
}

template <typename Stream>
template <typename ConstBufferSequence>