ElementwiseWalkProof.left_index: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/elementwise_walk_proof.bend as ElementwiseWalkProof
Lines 194-200 of bendtorch-core@0.1.0.0/src/tensor/elementwise_walk_proof.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise_walk_proof.bend&start_line=194&end_line=200

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

def left_index(-le: List<&2, Nat>, -re: List<&2, Nat>, -oe: List<&2, Nat>, +map: Shape.Index<le, re, oe>, +i: Nat) ->
  {left_at(Elementwise.left_slot(le, re, oe, map), le, re, oe, map, i) == Elementwise.left_walk(le, re, oe, map, i) : Nat}:
  match map:
    case Shape.Indexed{+rows, +exact}:
      left_pick(le, re, oe, rows, exact, Elementwise.same_left(rows), {==}, Elementwise.zero_left(rows), {==}, i)
    case Shape.Unindexed{+zero}:
      {==}

Uses (9):
  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-core@0.1.0.0/src/shape/core.bend&name=Index
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&name=left_slot
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&name=left_walk
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&name=same_left
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&name=zero_left
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise_walk_proof.bend&name=left_at
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise_walk_proof.bend&name=left_pick