def node_parent

import bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend as BalancedSearchTree

import Base

210def node_parent(~K: Data, n: Node<K>) -> Nat:
211  match n:
212    case Free{x}:
213      0n
214    case N{c, l, r, p, k}:
215      p

Uses (2)