Function one_of

pub fn one_of<I, T, Error: ParseError<I>>(
    list: T,
) -> impl Fn(I) -> IResult<I, char, Error>
where
    I: Slice<RangeFrom<usize>> + InputIter,
    <I as InputIter>::Item: AsChar + Copy,
    T: FindToken<<I as InputIter>::Item>,

Recognizes one of the provided characters.

Complete version: Will return an error if there’s not enough input data.

Example

assert_eq!(one_of::<_, _, (&str, ErrorKind)>("abc")("b"), Ok(("", 'b')));
assert_eq!(one_of::<_, _, (&str, ErrorKind)>("a")("bc"), Err(Err::Error(("bc", ErrorKind::OneOf))));
assert_eq!(one_of::<_, _, (&str, ErrorKind)>("a")(""), Err(Err::Error(("", ErrorKind::OneOf))));