pub fn hex_digit0<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
T: InputTakeAtPosition,
<T as InputTakeAtPosition>::Item: AsChar,
Expand description
Recognizes zero or more ASCII hexadecimal numerical characters: 0-9, A-F, a-f
Complete version: Will return the whole input if no terminating token is found (a non hexadecimal digit character).
Example
fn parser(input: &str) -> IResult<&str, &str> {
hex_digit0(input)
}
assert_eq!(parser("21cZ"), Ok(("Z", "21c")));
assert_eq!(parser("Z21c"), Ok(("Z21c", "")));
assert_eq!(parser(""), Ok(("", "")));