# digit0 in nom::character::streaming - Rust
Recognizes zero or more ASCII numerical characters: 0-9
Keywords: rust, rustlang, rust-lang, digit0

# Function nom::character::streaming::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

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::new(1))));