def prev

bend-collections@1.0.0.0 · src/containers/intrusive_doubly_linked_list.bend:15

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

15# Read the previous identity without changing membership.
16def prev(~S: Type, ~N: Data, ~prev_of: S -> N -> S & Maybe<&2, N>, s: S, +node: N) -> S & Maybe<&2, N>:
17  Impl.prev(~S, ~N, ~prev_of, s, node)