# Change Log All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/). ## [Unreleased] ## [v0.11.2] - 2021-03-25 ## Fixed - Added missing allocator type parameter to `HashMap`'s and `HashSet`'s `Clone` impls. (#252) ## [v0.11.1] - 2021-03-20 ## Fixed - Added missing `pub` modifier to `BumpWrapper`. (#251) ## [v0.11.0] - 2021-03-14 ## Added - Added safe `try_insert_no_grow` method to `RawTable`. (#229) - Added support for `bumpalo` as an allocator without the `nightly` feature. (#231) - Implemented `Default` for `RawTable`. (#237) - Added new safe methods `RawTable::get_each_mut`, `HashMap::get_each_mut`, and `HashMap::get_each_key_value_mut`. (#239) - Added `From>` for `HashSet`. (#235) - Added `try_insert` method to `HashMap`. (#247) ## Changed - The minimum Rust version has been bumped to 1.49.0. (#230) - Significantly improved compilation times by reducing the amount of generated IR. (#205) ## Removed - We no longer re-export the unstable allocator items from the standard library, nor the stable shims approximating the same. (#227) - Removed hasher specialization support from `aHash`, which was resulting in inconsistent hashes being generated for a key. (#248) ## Fixed - Fixed union length comparison. (#228) ## ~~[v0.10.0] - 2021-01-16~~ This release was _yanked_ due to inconsistent hashes being generated with the `nightly` feature. (#248) ## Changed - Parametrized `RawTable`, `HashSet` and `HashMap` over an allocator. (#133) - Improved branch prediction hints on stable. (#209) - Optimized hashing of primitive types with AHash using specialization. (#207) - Only instantiate `RawTable`'s reserve functions once per key-value. (#204) ## [v0.9.1] - 2020-09-28 ## Added - Added safe methods to `RawTable` (#202): - `get`: `find` and `as_ref` - `get_mut`: `find` and `as_mut` - `insert_entry`: `insert` and `as_mut` - `remove_entry`: `find` and `remove` - `erase_entry`: `find` and `erase` ## Changed - Removed `from_key_hashed_nocheck`'s `Q: Hash`. (#200) - Made `RawTable::drain` safe. (#201) ## [v0.9.0] - 2020-09-03 ### Fixed - `drain_filter` now removes and yields items that do match the predicate, rather than items that don't. This is a **breaking change** to match the behavior of the `drain_filter` methods in `std`. (#187) ### Added - Added `replace_entry_with` to `OccupiedEntry`, and `and_replace_entry_with` to `Entry`. (#190) - Implemented `FusedIterator` and `size_hint` for `DrainFilter`. (#188) ### Changed - The minimum Rust version has been bumped to 1.36 (due to `crossbeam` dependency). (#193) - Updated `ahash` dependency to 0.4. (#198) - `HashMap::with_hasher` and `HashSet::with_hasher` are now `const fn`. (#195) - Removed `T: Hash + Eq` and `S: BuildHasher` bounds on `HashSet::new`, `with_capacity`, `with_hasher`, and `with_capacity_and_hasher`. (#185) ## [v0.8.2] - 2020-08-08 ### Changed - Avoid closures to improve compile times. (#183) - Do not iterate to drop if empty. (#182) ## [v0.8.1] - 2020-07-16 ### Added - Added `erase` and `remove` to `RawTable`. (#171) - Added `try_with_capacity` to `RawTable`. (#174) - Added methods that allow re-using a `RawIter` for `RawDrain`, `RawIntoIter`, and `RawParIter`. (#175) - Added `reflect_remove` and `reflect_insert` to `RawIter`. (#175) - Added a `drain_filter` function to `HashSet`. (#179) ### Changed - Deprecated `RawTable::erase_no_drop` in favor of `erase` and `remove`. (#176) - `insert_no_grow` is now exposed under the `"raw"` feature. (#180) ## [v0.8.0] - 2020-06-18 ### Fixed - Marked `RawTable::par_iter` as `unsafe`. (#157) ### Changed - Reduced the size of `HashMap`. (#159) - No longer create tables with a capacity of 1 element. (#162) - Removed `K: Eq + Hash` bounds on `retain`. (#163) - Pulled in `HashMap` changes from rust-lang/rust (#164): - `extend_one` support on nightly. - `CollectionAllocErr` renamed to `TryReserveError`. - Added `HashSet::get_or_insert_owned`. - `Default` for `HashSet` no longer requires `T: Eq + Hash` and `S: BuildHasher`. ## [v0.7.2] - 2020-04-27 ### Added - Added `or_insert_with_key` to `Entry`. (#152) ### Fixed - Partially reverted `Clone` optimization which was unsound. (#154) ### Changed - Disabled use of `const-random` by default, which prevented reproducible builds. (#155) - Optimized `repeat` function. (#150) - Use `NonNull` for buckets, which improves codegen for iterators. (#148) ## [v0.7.1] - 2020-03-16 ### Added - Added `HashMap::get_key_value_mut`. (#145) ### Changed - Optimized `Clone` implementation. (#146) ## [v0.7.0] - 2020-01-31 ### Added - Added a `drain_filter` function to `HashMap`. (#135) ### Changed - Updated `ahash` dependency to 0.3. (#141) - Optimized set union and intersection. (#130) - `raw_entry` can now be used without requiring `S: BuildHasher`. (#123) - `RawTable::bucket_index` can now be used under the `raw` feature. (#128) ## [v0.6.3] - 2019-10-31 ### Added - Added an `ahash-compile-time-rng` feature (enabled by default) which allows disabling the `compile-time-rng` feature in `ahash` to work around a Cargo bug. (#125) ## [v0.6.2] - 2019-10-23 ### Added - Added an `inline-more` feature (enabled by default) which allows choosing a tradeoff between runtime performance and compilation time. (#119) ## [v0.6.1] - 2019-10-04 ### Added - Added `Entry::insert` and `RawEntryMut::insert`. (#118) ### Changed - `Group::static_empty` was changed from a `const` to a `static` (#116). ## [v0.6.0] - 2019-08-13 ### Fixed - Fixed AHash accidentally depending on `std`. (#110) ### Changed - The minimum Rust version has been bumped to 1.32 (due to `rand` dependency). ## ~~[v0.5.1] - 2019-08-04~~ This release was _yanked_ due to a breaking change for users of `no-default-features`. ### Added - The experimental and unsafe `RawTable` API is available under the "raw" feature. (#108) - Added entry-like methods for `HashSet`. (#98) ### Changed - Changed the default hasher from FxHash to AHash. (#97) - `hashbrown` is now fully `no_std` on recent Rust versions (1.36+). (#96) ### Fixed - We now avoid growing the table during insertions when it wasn't necessary. (#106) - `RawOccupiedEntryMut` now properly implements `Send` and `Sync`. (#100) - Relaxed `lazy_static` version. (#92) ## [v0.5.0] - 2019-06-12 ### Fixed - Resize with a more conservative amount of space after deletions. (#86) ### Changed - Exposed the Layout of the failed allocation in CollectionAllocErr::AllocErr. (#89) ## [v0.4.0] - 2019-05-30 ### Fixed - Fixed `Send` trait bounds on `IterMut` not matching the libstd one. (#82) ## [v0.3.1] - 2019-05-30 ### Fixed - Fixed incorrect use of slice in unsafe code. (#80) ## [v0.3.0] - 2019-04-23 ### Changed - Changed shrink_to to not panic if min_capacity < capacity. (#67) ### Fixed - Worked around emscripten bug emscripten-core/emscripten-fastcomp#258. (#66) ## [v0.2.2] - 2019-04-16 ### Fixed - Inlined non-nightly lowest_set_bit_nonzero. (#64) - Fixed build on latest nightly. (#65) ## [v0.2.1] - 2019-04-14 ### Changed - Use for_each in map Extend and FromIterator. (#58) - Improved worst-case performance of HashSet.is_subset. (#61) ### Fixed - Removed incorrect debug_assert. (#60) ## [v0.2.0] - 2019-03-31 ### Changed - The code has been updated to Rust 2018 edition. This means that the minimum Rust version has been bumped to 1.31 (2018 edition). ### Added - Added `insert_with_hasher` to the raw_entry API to allow `K: !(Hash + Eq)`. (#54) - Added support for using hashbrown as the hash table implementation in libstd. (#46) ### Fixed - Fixed cargo build with minimal-versions. (#45) - Fixed `#[may_dangle]` attributes to match the libstd `HashMap`. (#46) - ZST keys and values are now handled properly. (#46) ## [v0.1.8] - 2019-01-14 ### Added - Rayon parallel iterator support (#37) - `raw_entry` support (#31) - `#[may_dangle]` on nightly (#31) - `try_reserve` support (#31) ### Fixed - Fixed variance on `IterMut`. (#31) ## [v0.1.7] - 2018-12-05 ### Fixed - Fixed non-SSE version of convert_special_to_empty_and_full_to_deleted. (#32) - Fixed overflow in rehash_in_place. (#33) ## [v0.1.6] - 2018-11-17 ### Fixed - Fixed compile error on nightly. (#29) ## [v0.1.5] - 2018-11-08 ### Fixed - Fixed subtraction overflow in generic::Group::match_byte. (#28) ## [v0.1.4] - 2018-11-04 ### Fixed - Fixed a bug in the `erase_no_drop` implementation. (#26) ## [v0.1.3] - 2018-11-01 ### Added - Serde support. (#14) ### Fixed - Make the compiler inline functions more aggressively. (#20) ## [v0.1.2] - 2018-10-31 ### Fixed - `clear` segfaults when called on an empty table. (#13) ## [v0.1.1] - 2018-10-30 ### Fixed - `erase_no_drop` optimization not triggering in the SSE2 implementation. (#3) - Missing `Send` and `Sync` for hash map and iterator types. (#7) - Bug when inserting into a table smaller than the group width. (#5) ## v0.1.0 - 2018-10-29 - Initial release [Unreleased]: https://github.com/rust-lang/hashbrown/compare/v0.11.2...HEAD [v0.11.2]: https://github.com/rust-lang/hashbrown/compare/v0.11.1...v0.11.2 [v0.11.1]: https://github.com/rust-lang/hashbrown/compare/v0.11.0...v0.11.1 [v0.11.0]: https://github.com/rust-lang/hashbrown/compare/v0.10.0...v0.11.0 [v0.10.0]: https://github.com/rust-lang/hashbrown/compare/v0.9.1...v0.10.0 [v0.9.1]: https://github.com/rust-lang/hashbrown/compare/v0.9.0...v0.9.1 [v0.9.0]: https://github.com/rust-lang/hashbrown/compare/v0.8.2...v0.9.0 [v0.8.2]: https://github.com/rust-lang/hashbrown/compare/v0.8.1...v0.8.2 [v0.8.1]: https://github.com/rust-lang/hashbrown/compare/v0.8.0...v0.8.1 [v0.8.0]: https://github.com/rust-lang/hashbrown/compare/v0.7.2...v0.8.0 [v0.7.2]: https://github.com/rust-lang/hashbrown/compare/v0.7.1...v0.7.2 [v0.7.1]: https://github.com/rust-lang/hashbrown/compare/v0.7.0...v0.7.1 [v0.7.0]: https://github.com/rust-lang/hashbrown/compare/v0.6.3...v0.7.0 [v0.6.3]: https://github.com/rust-lang/hashbrown/compare/v0.6.2...v0.6.3 [v0.6.2]: https://github.com/rust-lang/hashbrown/compare/v0.6.1...v0.6.2 [v0.6.1]: https://github.com/rust-lang/hashbrown/compare/v0.6.0...v0.6.1 [v0.6.0]: https://github.com/rust-lang/hashbrown/compare/v0.5.1...v0.6.0 [v0.5.1]: https://github.com/rust-lang/hashbrown/compare/v0.5.0...v0.5.1 [v0.5.0]: https://github.com/rust-lang/hashbrown/compare/v0.4.0...v0.5.0 [v0.4.0]: https://github.com/rust-lang/hashbrown/compare/v0.3.1...v0.4.0 [v0.3.1]: https://github.com/rust-lang/hashbrown/compare/v0.3.0...v0.3.1 [v0.3.0]: https://github.com/rust-lang/hashbrown/compare/v0.2.2...v0.3.0 [v0.2.2]: https://github.com/rust-lang/hashbrown/compare/v0.2.1...v0.2.2 [v0.2.1]: https://github.com/rust-lang/hashbrown/compare/v0.2.0...v0.2.1 [v0.2.0]: https://github.com/rust-lang/hashbrown/compare/v0.1.8...v0.2.0 [v0.1.8]: https://github.com/rust-lang/hashbrown/compare/v0.1.7...v0.1.8 [v0.1.7]: https://github.com/rust-lang/hashbrown/compare/v0.1.6...v0.1.7 [v0.1.6]: https://github.com/rust-lang/hashbrown/compare/v0.1.5...v0.1.6 [v0.1.5]: https://github.com/rust-lang/hashbrown/compare/v0.1.4...v0.1.5 [v0.1.4]: https://github.com/rust-lang/hashbrown/compare/v0.1.3...v0.1.4 [v0.1.3]: https://github.com/rust-lang/hashbrown/compare/v0.1.2...v0.1.3 [v0.1.2]: https://github.com/rust-lang/hashbrown/compare/v0.1.1...v0.1.2 [v0.1.1]: https://github.com/rust-lang/hashbrown/compare/v0.1.0...v0.1.1