def in_order
import bend-visgraph@2.0.0.0/visgraph.bend as Visgraphimport Base
360def in_order(u: Unbounded, acc: Unbounded) -> Unbounded:
361 match u:
362 case UNil{}:
363 acc
364 case UCon{i, y, next}:
365 in_order(next, UCon{i, y, acc})