Survival.in_ref_rows: def of unified-nsga-iii@0.2.2.0
Import: import unified-nsga-iii@0.2.2.0/survival.bend as Survival
Lines 150-155 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=150&end_line=155

import Base
import unified-nsga-iii@0.2.2.0/util.bend as Util

def in_ref_rows(+r: Nat, rows: List<&2, NRow>) -> List<&2, NRow>:
  match rows:
    case Nil{}:
      Nil{}
    case +row <> rest:
      Util.keep_if(NRow, row, in_ref_rows(r, rest), Nat.is_eq(nrow_r(row), r))

Uses (6):
  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=Base/base.bend&name=Nat.is_eq
  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=nrow_r
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/util.bend&name=keep_if