Function dd_lib::opts::number::parse

pub fn parse(s: &str) -> Result<usize, ParseIntError>

Parse a numeric string with an optional one-or-two character multiplicative suffix (K, KB, M, MB, …) into an integer. Numeric strings may be decimal, octal, or hexadecimal. Multiple numeric strings may be multipled together by separating them with the ‘X’ character. See number/units for a list of the SI suffixes.

#use dd::opts::number::parse;
   vec![
       ("base case", "2", Some(2)),
       ("two ok", "0x18X21", Some(0x18 * 21)),
       ("mixed types", "0x11X0o22X2", Some(0x11 * 0o22 * 2)),
       ("multiple suffixes", "0x13MX9K", Some(0x13 * M * 9 * K)),
       ("bad string", "asjopdajsdomasd", None),
   ]
   .into_iter()
   .for_each(|(name, s, want)| {
       let got = parse(s).ok();
       assert_eq!(
           want, got,
           r#"{}: want number("{}") = {:?}, but got {:?}"#,
           name, s, want, got
       );
   })