Survival.pick_member.by.rows: def of unified-nsga-iii@0.2.2.0
Import: import unified-nsga-iii@0.2.2.0/survival.bend as Survival
Lines 628-633 of unified-nsga-iii@0.2.2.0/survival.bend: https://jend.leeeet.dev/read.txt?path=unified-nsga-iii@0.2.2.0/survival.bend&start_line=628&end_line=633

import Base

def pick_member.by.rows(group: List<&2, NRow>, empty_niche: Bool, +fallback: Nat) -> Nat:
  match group:
    case Nil{}:
      fallback
    case g0 <> gs:
      pick_member.by.ne.rows({g0 <> gs : List<&2, NRow>}, empty_niche)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/survival.bend&name=NRow
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/survival.bend&name=pick_member.by.ne.rows