#### posix::basic_stream_descriptor::write_some

Write some data to the descriptor.

    template<
        typename ConstBufferSequence>
    std::size_t write_some(
        const ConstBufferSequence & buffers);
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    template<
        typename ConstBufferSequence>
    std::size_t write_some(
        const ConstBufferSequence & buffers,
        asio::error_code & ec);
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