Function rmp::encode::write_map_len

pub fn write_map_len<W: RmpWrite>(
    wr: &mut W,
    len: u32,
) -> Result<Marker, ValueWriteError<W::Error>>

Encodes and attempts to write the most efficient map length 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.