def record
import bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend as DoublyLinkedListimport Base
import bend-collections@1.0.0.0/src/containers/types/doubly_linked_list.bend as E
355def record(~T: Data, acc: List<&2, E.Obs<T>>, r: DList<T> & E.Obs<T>) -> DList<T> & List<&2, E.Obs<T>>:
356 (s, o) = r
357 (s, Con{o, acc})