def set_key_node
import bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend as BalancedSearchTreeimport Base
939def set_key_node(~K: Data, ~V: Data, ~cmp: K -> K -> Cmp, m: TreeMap<K, V, cmp>, +id: Nat, +k: K, +node: Node<K>) -> TreeMap<K, V, cmp>:
940 match node:
941 case Free{next}:
942 m
943 case N{c, l, r, p, old}:
944 write(~K, ~V, ~cmp, m, id, N{c, l, r, p, k})