TraversalWitness.fold_run: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/proofs/traversal_witness.bend as TraversalWitness
Lines 253-266 of stelliferous@0.0.2.0/proofs/traversal_witness.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/proofs/traversal_witness.bend&start_line=253&end_line=266

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

def fold_run(~Reader: Type,~Element: Data,~Accumulator: Data,~Context: Data,~ReaderEvidence: @-reader: Reader -> Data,
  ~read: Reader -> Context -> U32 -> Reader & Element,~combine: Accumulator -> Element -> Accumulator,
  ~read_preserves: @-reader: Reader -> @context: Context -> @index: U32 -> ReaderEvidence(reader) ->
    Sample<Reader,Element,reader,read(reader,context,index)>,
  count: Nat,-reader: Reader,-state: Traversal.State<&1,&2,Reader,Accumulator,Context>,+reader_evidence: ReaderEvidence(reader),
  evidence: FoldEvidence<Reader,Accumulator,Context,reader,state>) ->
  FoldEvidence<Reader,Accumulator,Context,reader,
    Loop.run(~Traversal.State<&1,&2,Reader,Accumulator,Context>,~Traversal.fold_step(~Reader,~Element,~Accumulator,~Context,~read,~combine),count,state)>:
  match count:
    case 0n: evidence
    case 1n+rest:
      fold_run(~Reader,~Element,~Accumulator,~Context,~ReaderEvidence,~read,~combine,~read_preserves,rest,reader,
        Traversal.fold_step(~Reader,~Element,~Accumulator,~Context,~read,~combine,state),reader_evidence,
        fold_step(~Reader,~Element,~Accumulator,~Context,~ReaderEvidence,~read,~combine,~read_preserves,reader,state,reader_evidence,evidence))

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  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=stelliferous@0.0.2.0/proofs/traversal_witness.bend&name=FoldEvidence
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/proofs/traversal_witness.bend&name=Sample
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/proofs/traversal_witness.bend&name=fold_step
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/traversal_array.bend&name=State
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/traversal_array.bend&name=fold_step
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/traversal_loop.bend&name=run