Function flush_to_writer 

pub fn flush_to_writer<T, W>(encoder: &mut T, writer: W) -> Result<(), Error>
where
    T: Encoder + ?Sized,
    W: Write,

Flushes the output of an Encoder to a standard I/O writer.

See encode_to_writer for more information.

Errors

Returns any I/O error encountered while writing to the writer.