# Function nom::character::complete::char

source · [−]

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

Expand description

Recognizes one character.

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

## Example

    fn parser(i: &str) -> IResult<&str, char> {
        char('a')(i)
    }
    assert_eq!(parser("abc"), Ok(("bc", 'a')));
    assert_eq!(parser(" abc"), Err(Err::Error(Error::new(" abc", ErrorKind::Char))));
    assert_eq!(parser("bc"), Err(Err::Error(Error::new("bc", ErrorKind::Char))));
    assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Char))));