IntrusiveDoublyLinkedList.at_least_two: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/containers/intrusive_doubly_linked_list.bend as IntrusiveDoublyLinkedList
Lines 49-51 of bend-collections@1.0.0.0/src/containers/intrusive_doubly_linked_list.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/containers/intrusive_doubly_linked_list.bend&start_line=49&end_line=51

import Base
import bend-collections@1.0.0.0/src/containers/internal/intrusive_list.bend as Impl

# O(1) query: head exists and has a successor.
def at_least_two(~S: Type, ~N: Data, ~H: Data, ~get_head: S -> H -> S & Maybe<&2, N>, ~next: S -> N -> S & Maybe<&2, N>, s: S, +h: H) -> S & Bool:
  Impl.at_least_two(~S, ~N, ~H, ~get_head, ~next, s, h)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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=bend-collections@1.0.0.0/src/containers/internal/intrusive_list.bend&name=at_least_two