Function one_of

pub fn one_of<I, T, Error>(
    list: T,
) -> impl Parser<I, Output = char, Error = Error>
where
    Error: ParseError<I>,
    I: Input,
    <I as Input>::Item: AsChar,
    T: FindToken<char>,

Recognizes one of the provided characters.

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))));