def zip_fin
import bend-collections@1.0.0.0/src/containers/bitset.bend as Bitsetimport Base
import bend-collections@1.0.0.0/src/containers/types/bitset.bend as E
382def zip_fin(p: Array<Wd> & Array<Wd>, +n: Nat, +d: Nat, +m: Nat, +e: Nat) -> Bitset & Bitset & Result<&2, &2, E.Error, Unit>:
383 (a, b) = p
384 (BS{n, d, a}, BS{m, e, b}, Done{Unit{}})