Function gobble::repeater::do_exact

pub fn do_exact<'a, A: Parser>(
    it: &LCChars<'a>, 
    a: &A, 
    n: usize
) -> ParseRes<'a, Vec<A::Out>>

use gobble::*;
let it = LCChars::str("hello fish car cat");
let (_,v,_) = do_exact(&it,&common_ident.then_ig(" "),3).unwrap();
assert_eq!(v,vec!["hello","fish","car"]);