def size.arr
import bend-kit-cbor@0.3.0.0/cbor.bend as Cborimport Base
255def size.arr(h: Val, r: Val & Nat) -> Val & Nat:
256 (t, n) = r
257 match t:
258 case Arr{items}:
259 (Arr{Con{h, items}}, n)
260 case _:
261 (Arr{Nil{}}, n)