def g_take

bend-osdev-bytes@0.1.1.0 · PROOF.bend:283

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

283def g_take(n: Nat, ws: List<&2, B.OctByte>, acc: List<&2, B.OctByte>) -> {B.w8s.take.go(n, ws, acc) == B.w8s.rev_onto(B.w8s.take(n, ws), acc) : List<&2, B.OctByte>}:
284  match n ws:
285    case 0n _:
286      {==}
287    case 1n+p Nil{}:
288      {==}
289    case 1n+p Con{h, t}:
290      g_take(p, t, Con{h, acc})