# Function nom::character::complete::digit0

source · [−]

    pub fn 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 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(("", "")));