rocket::mtls::x509::der_parser::asn1_rs::nom::character::complete

Function digit0

Source 
pub fn digit0<T, E>(input: T) -> Result<(T, T), Err<E>>
where
    E: ParseError<T>,
    T: InputTakeAtPosition,
    <T as InputTakeAtPosition>::Item: AsChar,
Available on crate feature mtls only.
Expand description

Recognizes zero or more ASCII numerical characters: 0-9

Complete version: Will return an error if there’s not enough input data, or the whole input if no terminating token is found (a non digit character).

§Example

fn parser(input: &str) -> IResult<&str, &str> {
    digit0(input)
}

assert_eq!(parser("21c"), Ok(("c", "21")));
assert_eq!(parser("21"), Ok(("", "21")));
assert_eq!(parser("a21c"), Ok(("a21c", "")));
assert_eq!(parser(""), Ok(("", "")));