Function sexpy::parsers::ignore

pub fn ignore<'a, F, O1>(
    inner: F
) -> impl Fn(&'a str) -> IResult<&'a str, (), SexpyError<&'a str>> where
    F: Fn(&'a str) -> IResult<&'a str, O1, SexpyError<&'a str>>, 

The inner parser that ignores the result and returns unit instead