Spec.mv: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/spec.bend as Spec
Lines 36-42 of bendtorch@1.3.0.0/spec.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/spec.bend&start_line=36&end_line=42

import Base

# M·v: one dot product per row (a linear layer's forward pass, y = W·x)
def mv(rows: List<&2, List<&2, Nat>>, +v: List<&2, Nat>) -> List<&2, Nat>:
  match rows:
    case Nil{}:
      Nil{}
    case Con{r, t}:
      dotn(r, v) <> mv(t, v)

Uses (3):
  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=bendtorch@1.3.0.0/spec.bend&name=dotn