TensorBackward.merge: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend as TensorBackward
Lines 879-888 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=879&end_line=888

import Base
import bendtorch-core@0.1.0.0/src/autograd/gradient.bend as Gradient

def merge(entries: List<&1, Entry>, gradients: List<&1, Gradient.Slot>) -> List<&1, Entry> & Result<&2, &2, Error, Unit>:
  match entries gradients:
    case Nil{} gradients:
      (Nil{}, Done{Unit{}})
    case Con{entry, rest} Nil{}:
      (entry <> rest, Done{Unit{}})
    case Con{Entry{node, +shape, value, saved, slot}, rest} Con{Gradient.Unset{}, more}:
      merged_entry(node, shape, value, saved, Gradient.Accumulated{slot}, merge(rest, more))
    case Con{Entry{node, +shape, value, saved, slot}, rest} Con{Gradient.Held{g}, more}:
      merged_entry(node, shape, value, saved, Gradient.accumulate(shape, slot, g), merge(rest, more))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/gradient.bend&name=Outcome
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/gradient.bend&name=Slot
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/gradient.bend&name=accumulate
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&name=Entry
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&name=merged_entry