use backtrack::problems::CountUp; use backtrack::solvers::IterSolveNaive; fn main() { let asc = CountUp::new(4, 0..5); eprintln!("count_up.rs: {:?}", asc); let solver = IterSolveNaive::new(&asc); for solution in solver.into_iter() { println!("{:?}", solution); } }