| // build-pass (FIXME(62277): could be check-pass?) | |
| // ignore-emscripten no i128 support | |
| fn fibs(n: u32) -> impl Iterator<Item=u128> { | |
| (0 .. n) | |
| .scan((0, 1), |st, _| { | |
| *st = (st.1, st.0 + st.1); | |
| Some(*st) | |
| }) | |
| .map(&|(f, _)| f) | |
| } | |
| fn main() { | |
| println!("{:?}", fibs(10).collect::<Vec<_>>()); | |
| } |