pub fn write_ext_meta<W: RmpWrite>(
wr: &mut W,
len: u32,
ty: i8,
) -> Result<Marker, ValueWriteError<W::Error>>
Expand description
Encodes and attempts to write the most efficient ext metadata implementation to the given write, returning the marker used.
§Errors
This function will return ValueWriteError
on any I/O error occurred while writing either the
marker or the data.
§Panics
Panics if ty
is negative, because it is reserved for future MessagePack extension including
2-byte type information.