pub fn alpha1<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
T: InputTakeAtPosition,
<T as InputTakeAtPosition>::Item: AsChar, Expand description
Recognizes one 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!(alpha1::<_, (_, ErrorKind)>("aB1c"), Ok(("1c", "aB")));
assert_eq!(alpha1::<_, (_, ErrorKind)>("1c"), Err(Err::Error(("1c", ErrorKind::Alpha))));
assert_eq!(alpha1::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));