Function combine::parser::combinator::and_then

pub fn and_then<Input, P, F, O, E>(p: P, f: F) -> AndThen<P, F> where
    P: Parser<Input>,
    F: FnMut(P::Output) -> Result<O, E>,
    Input: Stream,
    E: Into<<Input::Error as ParseError<Input::Token, Input::Range, Input::Position>>::StreamError>, 

Equivalent to p.and_then(f).