def off.app_assoc

bend-osdev-bytes@0.1.1.0 · PROOF.bend:941

import Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B

941def off.app_assoc(xs: List<&2, B.OctByte>, +ys: List<&2, B.OctByte>, +zs: List<&2, B.OctByte>) -> {List.append(&2, B.OctByte, List.append(&2, B.OctByte, xs, ys), zs) == List.append(&2, B.OctByte, xs, List.append(&2, B.OctByte, ys, zs)) : List<&2, B.OctByte>}:
942  match xs:
943    case Nil{}:
944      {==}
945    case Con{h, t}:
946      Equal.cong(List<&2, B.OctByte>, List<&2, B.OctByte>, l => Con{h, l}, List.append(&2, B.OctByte, List.append(&2, B.OctByte, t, ys), zs), List.append(&2, B.OctByte, t, List.append(&2, B.OctByte, ys, zs)), off.app_assoc(t, ys, zs))