def write_prev

bend-collections@1.0.0.0 · src/containers/internal/intrusive_list.bend:52

import Base

52def write_prev(~S: Type, ~N: Data, ~set_prev: S -> N -> Maybe<&2, N> -> S, s: S, +at: Maybe<&2, N>, +node: Maybe<&2, N>) -> S:
53  match at:
54    case None{}: s
55    case Some{a}: set_prev(s, a, node)