def off.drop_app_add

bend-osdev-bytes@0.1.1.0 · PROOF.bend:833

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

833def off.drop_app_add(xs: List<&2, B.OctByte>, +n: Nat, +ys: List<&2, B.OctByte>) -> {B.w8s.drop(Nat.add(List.length(&2, B.OctByte, xs), n), List.append(&2, B.OctByte, xs, ys)) == B.w8s.drop(n, ys) : List<&2, B.OctByte>}:
834  match xs:
835    case Nil{}:
836      {==}
837    case Con{h, t}:
838      off.drop_app_add(t, n, ys)