Elementwise.same_left: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/elementwise.bend as Elementwise
Lines 266-276 of bendtorch-core@0.1.0.0/src/tensor/elementwise.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&start_line=266&end_line=276

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape

# Whether the left input's stride is the output's on every axis and the last
# one is 1, so that the walk of every position is the position itself. Equal
# left and output shapes with no axis of extent 1 have such rows.
def same_left(rows: List<&2, Shape.Row>) -> Bool:
  match rows:
    case Shape.Row{+stride, +left, right} <> Nil{}:
      Bool.and(Nat.is_eq(stride, 1n), Nat.is_eq(left, 1n))
    case Shape.Row{+stride, +left, right} <> rest:
      Bool.and(Nat.is_eq(left, stride), same_left(rest))
    case Nil{}:
      False{}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_eq
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Row