def at.go
import bend-net-json@0.3.0.0/json.bend as Jsonimport Base
509def at.go(xs: List<&2, Val>, n: Nat) -> Maybe<&2, Val>:
510 match xs:
511 case Nil{}:
512 None{}
513 case Con{v, t}:
514 match n:
515 case 0n:
516 Some{v}
517 case 1n+p:
518 at.go(t, p)