# Function nom::character::streaming::digit1

source · [−]

    pub fn digit1<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
        T: InputTakeAtPosition,
        <T as InputTakeAtPosition>::Item: AsChar,

Expand description

Recognizes one 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!(digit1::<_, (_, ErrorKind)>("21c"), Ok(("c", "21")));
    assert_eq!(digit1::<_, (_, ErrorKind)>("c1"), Err(Err::Error(("c1", ErrorKind::Digit))));
    assert_eq!(digit1::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));