def pick_member.by.ne.rows
import unified-nsga-iii@0.2.2.0/survival.bend as Survivalimport Base
621def pick_member.by.ne.rows(+group: List<&2, NRow>, empty_niche: Bool) -> Nat:
622 match empty_niche:
623 case True{}:
624 argmin_dist_rows(group)
625 case False{}:
626 min_idx_rows(group)