Bendtorch.fheads: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/main.bend as Bendtorch
Lines 2578-2583 of bendtorch@1.3.0.0/main.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/main.bend&start_line=2578&end_line=2583

import Base

def fheads(left: Nat, +hi: Nat, +dm: Dm, s: FS) -> FS:
  match left:
    case 0n:
      s
    case 1n+n:
      fheads(n, 1n+hi, dm, head_fwd(dm, head_cols(dm, hi), s))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/main.bend&name=Dm
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/main.bend&name=FS
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/main.bend&name=head_cols
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/main.bend&name=head_fwd