Deque.run_acc: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/src/containers/deque.bend as Deque
Lines 153-159 of bend-collections-laws-math@1.0.0.0/src/containers/deque.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/src/containers/deque.bend&start_line=153&end_line=159

import Base
import bend-collections-laws-math@1.0.0.0/src/containers/types/deque.bend as E

# Runs ops left to right; observations are accumulated newest-first.
def run_acc(~T: Data, ops: List<&2, E.Op<T>>, st: Deque<T> & List<&2, E.Obs<T>>) -> Deque<T> & List<&2, E.Obs<T>>:
  match ops:
    case Nil{}:
      st
    case Con{op, rest}:
      run_acc(~T, rest, step_acc(~T, op, st))

Uses (6):
  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=bend-collections-laws-math@1.0.0.0/src/containers/deque.bend&name=Deque
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/containers/deque.bend&name=step_acc
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/containers/types/deque.bend&name=Obs
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/containers/types/deque.bend&name=Op