Function nom::character::streaming::digit0

pub fn digit0<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
    T: InputTakeAtPosition,
    <T as InputTakeAtPosition>::Item: AsChar, 

Recognizes zero or more ASCII numerical characters: 0-9

streaming version: Will return Err(nom::Err::Incomplete(_)) if there’s not enough input data, or if no terminating token is found (a non digit character).

Example

assert_eq!(digit0::<_, (_, ErrorKind)>("21c"), Ok(("c", "21")));
assert_eq!(digit0::<_, (_, ErrorKind)>("a21c"), Ok(("a21c", "")));
assert_eq!(digit0::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::Size(1))));