# Function nom::character::streaming::alpha0

source · [−]

    pub fn alpha0<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
        T: InputTakeAtPosition,
        <T as InputTakeAtPosition>::Item: AsChar,

Expand description

Recognizes zero or more lowercase and uppercase ASCII alphabetic characters: a-z, A-Z

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

## Example

    assert_eq!(alpha0::<_, (_, ErrorKind)>("ab1c"), Ok(("1c", "ab")));
    assert_eq!(alpha0::<_, (_, ErrorKind)>("1c"), Ok(("1c", "")));
    assert_eq!(alpha0::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));