def gf128.of_list.pick
import bend-osdev-gf@0.1.1.0/gf128.bend as Gf128import Base
61def gf128.of_list.pick(ok: Bool, +n: Nat, +xs: List<&2, U32>) -> Result<&2, &2, Gf128Error, Gf128>:
62 match ok:
63 case True{}:
64 Done{gf128.of_list.go(xs)}
65 case False{}:
66 Fail{Gf128BadLength{n}}