def put_replaced

bend-collections@1.0.0.0 · src/containers/balanced_search_tree.bend:292

import Base

292def put_replaced(~K: Data, ~V: Data, ~cmp: K -> K -> Cmp, r: TreeMap<K, V, cmp> & Maybe<&2, V>) -> TreeMap<K, V, cmp> & Result<&2, &2, Rejected<K, V>, Maybe<&2, V>>:
293  (m, old) = r
294  (m, Done{old})