Function write_specific 

pub fn write_specific<W, E>(writer: &mut W, v: &E) -> Result<()>
where
    W: Write + ?Sized,
    E: EndianWrite,

Available on crate feature io-std only.

Write an endian-aware value of type E to a writer.

Like read_specific, this supports both sized writers and &mut dyn std::io::Write.