Spec.dotn: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/spec.bend as Spec
Lines 11-17 of bendtorch@1.3.0.0/spec.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/spec.bend&start_line=11&end_line=17

import Base

# the dot product of the common prefix
def dotn(xs: List<&2, Nat>, ys: List<&2, Nat>) -> Nat:
  match xs ys:
    case Con{x, xt} Con{y, yt}:
      Nat.add(Nat.mul(x, y), dotn(xt, yt))
    case _ _:
      0n

Uses (4):
  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.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul