2 let _ = (0..4).filter_map(|x| if x > 1 { Some(x) } else { None });
3 let _ = (0..4).filter_map(|x| {
9 let _ = (0..4).filter_map(|x| match x {
14 let _ = (0..4).filter_map(|x| Some(x + 1));
16 let _ = (0..4).filter_map(i32::checked_abs);
19 fn filter_map_none_changes_item_type() -> impl Iterator<Item = bool> {
20 "".chars().filter_map(|_| None)