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966b8930e3
btree: simplify the backdoor between set and map The internal `btree::Recover` trait acted as a private API between `BTreeSet` and `BTreeMap`, but we can use `pub(_)` restrictions these days, and some of the methods don't need special handling anymore. * `BTreeSet::get` can use `BTreeMap::get_key_value` * `BTreeSet::take` can use `BTreeMap::remove_entry` * `BTreeSet::replace` does need help, but this now uses a `pub(super)` method on `BTreeMap` instead of the trait. * `btree::Recover` is now removed. |
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