TensorBackward.constant_at: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend as TensorBackward
Lines 1060-1070 of bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&start_line=1060&end_line=1070

import Base

# Whether node id of a newest-first list of count nodes is a constant.
def constant_at(nodes: List<&2, Node>, +count: Nat, +id: Nat, same: Bool) -> Bool:
  match nodes count same:
    case Nil{} count same:
      False{}
    case Con{node, rest} 0n same:
      False{}
    case Con{node, rest} 1n+below True{}:
      is_constant(node)
    case Con{node, rest} 1n+below False{}:
      constant_at(rest, below, id, at_head(below, id))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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/autograd/tensor_backward.bend&name=Node
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&name=at_head
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&name=is_constant