TraversalArrayRefinement.model_fold_step: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/proofs/traversal_array_refinement.bend as TraversalArrayRefinement
Lines 93-97 of stelliferous@0.0.2.0/proofs/traversal_array_refinement.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/proofs/traversal_array_refinement.bend&start_line=93&end_line=97

import Base
import stelliferous@0.0.2.0/traversal_array.bend as Traversal

def model_fold_step(~Model: Data,~Element: Data,~Accumulator: Data,~Context: Data,
  ~sample: Model -> Context -> U32 -> Element,~combine: Accumulator -> Element -> Accumulator,
  state: Traversal.State<&2,&2,Model,Accumulator,Context>) -> Traversal.State<&2,&2,Model,Accumulator,Context>:
  Traversal.State{+reader,accumulator,+position,+context} = state
  Traversal.State{reader,combine(accumulator,sample(reader,context,position)),(position + 1 : U32),context}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/traversal_array.bend&name=State