DoublyLinkedList.project_neighbour: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend as DoublyLinkedList
Lines 238-243 of bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend&start_line=238&end_line=243

import Base
import bend-collections@1.0.0.0/src/containers/types/doubly_linked_list.bend as E

def project_neighbour(~T: Data, r: DList<T> & E.Obs<T>) -> DList<T> & Result<&2, &2, E.Error, Maybe<&2, E.Handle>>:
  match r:
    case Tuple{s, E.ONbr{x}}:
      (s, x)
    case Tuple{s, other}:
      (s, Fail{E.StaleHandle{}})

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend&name=DList
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/types/doubly_linked_list.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/types/doubly_linked_list.bend&name=Handle
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/types/doubly_linked_list.bend&name=Obs