mirror of
https://github.com/rust-lang/rust.git
synced 2025-12-03 21:59:07 +00:00
aa685e2024
Implement BTreeMap::retain and BTreeSet::retain Adds new methods `BTreeMap::retain` and `BTreeSet::retain`. These are implemented on top of `drain_filter` (#70530). The API of these methods is identical to `HashMap::retain` and `HashSet::retain`, which were implemented in #39560 and stabilized in #36648. The docs and tests are also copied from HashMap/HashSet. The new methods are unstable, behind the `btree_retain` feature gate, with tracking issue #79025. See also rust-lang/rfcs#1338.