BatchedMatmulLAWS.columns_of: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/batched_matmul_LAWS.bend as BatchedMatmulLAWS
Lines 326-334 of bendtorch-core@0.1.0.0/src/tensor/batched_matmul_LAWS.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/batched_matmul_LAWS.bend&start_line=326&end_line=334

import Base

# The last extent: the columns of a matrix.
def columns_of(dims: List<&2, Nat>) -> Nat:
  match dims:
    case +x <> Nil{}:
      x
    case +x <> +y <> tail:
      columns_of(y <> tail)
    case Nil{}:
      0n

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat