def obs_nbr
import bend-collections@1.0.0.0/src/containers/internal/dlist_storage.bend as DlistStorageimport Base
import bend-collections@1.0.0.0/src/containers/types/internal_dlist.bend as E
474def obs_nbr(~T: Data, r: DList<T> & Result<&2, &2, E.Error, Maybe<&2, E.Handle>>) -> DList<T> & E.Obs<T>:
475 (s, x) = r
476 (s, E.ONbr{x})