Function nom::sequence::pair

pub fn pair<I, O1, O2, E: ParseError<I>, F, G>(
    first: F, 
    second: G
) -> impl Fn(I) -> IResult<I, (O1, O2), E> where
    F: Fn(I) -> IResult<I, O1, E>,
    G: Fn(I) -> IResult<I, O2, E>,