ListProofs.reverse_twice: law of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/proofs/crypto/sha/list_proofs.bend as ListProofs
Lines 20-26 of bend-collections@1.0.0.0/proofs/crypto/sha/list_proofs.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/proofs/crypto/sha/list_proofs.bend&start_line=20&end_line=26

import Base

law reverse_twice:
  for -A: Data
  for xs: List<&2, A>
  for acc: List<&2, A>
  for ys: List<&2, A>
  {List.reverse.go(&2, A, List.reverse.go(&2, A, xs, acc), ys)
    == List.reverse.go(&2, A, acc, List.append(&2, A, xs, ys)) : List<&2, A>}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.append
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.reverse.go