Bytes.app_assoc: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/random/bytes.bend as Bytes
Lines 28-33 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/random/bytes.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/random/bytes.bend&start_line=28&end_line=33

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/random.bend as SCR

def app_assoc(+xs: List<&2, U32>, +ys: List<&2, U32>, +zs: List<&2, U32>) -> {SCR.append(SCR.append(xs, ys), zs) == SCR.append(xs, SCR.append(ys, zs)) : List<&2, U32>}:
  match xs:
    case Nil{}:
      {==}
    case Con{+x, +rest}:
      Equal.cong(List<&2, U32>, List<&2, U32>, l => Con{x, l}, SCR.append(SCR.append(rest, ys), zs), SCR.append(rest, SCR.append(ys, zs)), app_assoc(rest, ys, zs))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.cong
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/random.bend&name=append