Runner.dead.old.keep: def of bend-kit-runner@0.13.0.1
Import: import bend-kit-runner@0.13.0.1/runner.bend as Runner
Lines 126-131 of bend-kit-runner@0.13.0.1/runner.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-runner@0.13.0.1/runner.bend&start_line=126&end_line=131

import Base

def dead.old.keep(-A: Data, old: Bool, +i: Nat, rest: List<&2, Nat>) -> List<&2, Nat>:
  match old:
    case True{}:
      Con{i, rest}
    case False{}:
      rest

Uses (3):
  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