Function nom::number::complete::be_u8

pub fn be_u8<'a, E: ParseError<&'a [u8]>>(
    i: &'a [u8]
) -> IResult<&'a [u8], u8, E>

Recognizes an unsigned 1 byte integer

complete version: returns an error if there is not enough input data

use nom::number::complete::be_u8;

let parser = |s| {
  be_u8(s)
};

assert_eq!(parser(b"\x00\x03abcefg"), Ok((&b"\x03abcefg"[..], 0x00)));
assert_eq!(parser(b""), Err(Err::Error((&[][..], ErrorKind::Eof))));