Fold.step: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/contracts/fold.bend as Fold
Lines 20-28 of bendtorch-core@0.1.0.0/src/tensor/contracts/fold.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/contracts/fold.bend&start_line=20&end_line=28

import Base
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core

def step(~O: Data, ~g: O -> F32 -> F32 -> F32, +operation: O, +kept: Bool,
  rec: Core.Dynamic -> F32 -> Core.Dynamic & Result<&2, &1, Core.Error, F32>,
  accumulator: F32, pair: Core.Dynamic & Result<&2, &2, Core.Error, F32>) -> Core.Dynamic & Result<&2, &1, Core.Error, F32>:
  (input, result) = pair
  match result:
    case Fail{error}:
      (input, Fail{error})
    case Done{x}:
      rec(input, chosen(~O, ~g, operation, kept, accumulator, x))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  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=bendtorch-core@0.1.0.0/src/tensor/contracts/fold.bend&name=chosen
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Dynamic
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Error