Function decode_write 

pub fn decode_write<W>(
    input: impl AsRef<[u8]>,
    output: &mut W,
) -> Result<usize, DecodeWriteError>
where
    W: Write + ?Sized,

Available on crate feature std only.

Decode into a byte writer without allocating an intermediate vector.

All input is validated before writing. On an I/O error, the writer may have received a partial result. This function does not flush the writer.