[−][src]Function nom::character::streaming::alpha0

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

Recognizes zero or more lowercase and uppercase alphabetic characters.

For ASCII strings: a-zA-Z
For UTF8 strings, any alphabetic code point (ie, not only the ASCII ones)

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::Size(1))));