GradientLAWS.SlotKept: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/autograd/gradient_LAWS.bend as GradientLAWS
Lines 53-59 of bendtorch-core@0.1.0.0/src/autograd/gradient_LAWS.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/autograd/gradient_LAWS.bend&start_line=53&end_line=59

import Base
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
import bendtorch-core@0.1.0.0/src/tensor/elementwise_totality.bend as Totality
import bendtorch-core@0.1.0.0/src/autograd/gradient.bend as Gradient

def SlotKept(before: Gradient.Slot, after: Gradient.Slot) -> Type:
  match before:
    case Gradient.Unset{}:
      {held_dimensions(after) == None{} : Maybe<&2, List<&2, U32>>}
    case Gradient.Held{gradient}:
      {held_dimensions(after) == Some{Totality.dimensions(gradient)} : Maybe<&2, List<&2, U32>>} &
        (@+index: U32 -> {held_observe(after, index) == Core.checked_observe_dynamic(gradient, index) : Maybe<&2, F32>})

Uses (10):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  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_LAWS.bend&name=held_dimensions
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/gradient_LAWS.bend&name=held_observe
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=checked_observe_dynamic
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise_totality.bend&name=dimensions