Batch.execute: def of bend-edit-distance@0.2.2.0
Import: import bend-edit-distance@0.2.2.0/src/Batch.bend as Batch
Lines 153-165 of bend-edit-distance@0.2.2.0/src/Batch.bend: https://jend.leeeet.dev/read.txt?path=bend-edit-distance@0.2.2.0/src/Batch.bend&start_line=153&end_line=165

import Base

# Only ready, independent subplans enter parallel calls. A leaf uses the same
# single-pair implementation; column carries and successive columns stay serial.
def execute(plan: Plan) -> List<&2, IndexedResult>:
  match plan:
    case Empty{}:
      Nil{}
    case Leaf{index, job}:
      [single(index, job)]
    case Serial{jobs}:
      serial(jobs)
    case Fork{left, right}:
      a b = execute(left) execute(right)
      List.append(&2, IndexedResult, a, b)

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=List.append
  https://jend.leeeet.dev/definition.txt?path=bend-edit-distance@0.2.2.0/src/Batch.bend&name=IndexedResult
  https://jend.leeeet.dev/definition.txt?path=bend-edit-distance@0.2.2.0/src/Batch.bend&name=Plan
  https://jend.leeeet.dev/definition.txt?path=bend-edit-distance@0.2.2.0/src/Batch.bend&name=serial
  https://jend.leeeet.dev/definition.txt?path=bend-edit-distance@0.2.2.0/src/Batch.bend&name=single