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CHANGELOG.md

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Changelog

v0.16.3 - 2026-01-07

  • Fix Stacked Borrows violation in IterMut.

v0.16.2 - 2025-10-14

  • Upgrade hashbrown dependency to 0.16.0.

v0.16.1 - 2025-09-08

  • Fix Clone for unbounded cache.

v0.16.0 - 2025-07-02

  • Implement Clone for caches with custom hashers.

v0.15.0 - 2025-06-26

  • Return bool from promote and demote to indicate whether key was found.

v0.14.0 - 2025-04-12

  • Use NonZeroUsize::MAX instead of unwrap(), and update MSRV to 1.70.0.

v0.13.0 - 2025-01-27

  • Add peek_mru and pop_mru methods, upgrade dependency on hashbrown to 0.15.2, and update MSRV to 1.65.0.

v0.12.5 - 2024-10-30

  • Upgrade hashbrown dependency to 0.15.

v0.12.4 - 2024-07-30

  • Add methods that take a reference to the key that should be inserted.

v0.12.3 - 2024-02-24

  • Add get_key_value_mut method.

v0.12.2 - 2024-01-28

  • Add clone method.

v0.12.1 - 2023-11-21

  • Add get_key_value method.

v0.12.0 - 2023-10-03

  • Add lifetime specifier to try_get_or_insert_mut.
  • Add BuildHasher trait bound to Debug for LruCache.

v0.11.1 - 2023-09-05

  • Add try_get_or_insert_mut method.

v0.11.0 - 2023-07-11

  • Update dependency on hashbrown to 0.14 and update MSRV to 1.64.0.

v0.10.1 - 2023-06-29

  • Add try_get_or_insert method.

v0.10.0 - 2023-03-04

  • Remove KeyRef from the public API.

v0.9.0 - 2022-12-31

  • Update dependency on hashbrown to 0.13.
  • Change LruCache.map to hold a pointer, rather than owned LruEntry.

v0.8.1 - 2022-10-01

  • Add "caching" and "no-std" to list of categories.

v0.8.0 - 2022-09-11

  • Use NonZeroUsize for LRU capacity instead of usize.
  • Add get_or_insert_mut method which is similiar to get_or_insert but returns a mutable reference instead of an immutable reference.
  • Add LruCache::promote and LruCache::demote API to manipulate LRU order of the entry directly.

v0.7.8 - 2022-07-19

  • Update dependency on hashbrown to 0.12.

v0.7.7 - 2022-06-14

  • Use FnOnce instead of Fn for trait bound of fn in get_or_insert.

v0.7.6 - 2022-05-25

  • Add pop_entry method.

v0.7.5 - 2022-04-04

  • Add push method.

v0.7.4 - 2022-04-03

  • Implement IntoIterator trait and fix lifetime bug in get_or_insert.

v0.7.3 - 2022-02-28

  • Add get_or_insert method.

v0.7.2 - 2021-12-28

  • Explicitly implement Borrow for Box for non-nightly.

v0.7.1 - 2021-12-18

  • Fix lifetime of iterators.

v0.7.0 - 2021-09-14

  • Explicitly implement Borrow for String and Vec types for non-nightly.

v0.6.6 - 2021-07-28

  • Update dependency on hashbrown to 0.11.2.

v0.6.5 - 2021-02-12

  • Add unbounded_with_hasher constructor.

v0.6.4 - 2021-02-03

  • Fix memory leak when keys contain heap allocated data and ensure send/sync bounds apply to all conforming hashers.

v0.6.3 - 2020-12-19

  • Fix memory leak in clear and resize methods.

v0.6.2 - 2020-12-12

  • Rename optin_builtin_traits to auto_traits.

v0.6.1 - 2020-11-02

  • Update dependency on hashbrown to 0.9.

v0.6.0 - 2020-08-02

  • Update dependency on hashbrown to 0.8.

v0.5.3 - 2020-07-06

  • Fix bug that causes crash when putting an item into a zero-capacity cache.

v0.5.2 - 2020-06-17

  • Fix nightly feature.

v0.5.1 - 2020-06-02

  • Fix memory leak whereby old entries wouldn't be dropped when cache is full.

v0.5.0 - 2020-05-28

  • Stop gating the alloc crate behind the nightly flag.

v0.4.5 - 2020-05-25

  • Use as_mut_ptr in drop to fix memory leak.

v0.4.4 - 2020-05-19

  • Use mem::MaybeUninit for key and value fields of nodes and not the nodes themselves.

v0.4.3 - 2019-12-10

  • Add back import of alloc crate on nightly which was accidentally removed.

v0.4.2 - 2019-12-08

  • Make hasbrown usage optional and add MSRV documentation.

v0.4.1 - 2019-11-26

  • Use mem::MaybeUninit instead of mem::uninitialized.

v0.4.0 - 2019-10-28

  • Use Borrow trait in contains and pop methods.

v0.3.1 - 2019-10-08

  • Implement Debug for LruCache.

v0.3.0 - 2019-10-06

  • Update the signature of the peek methods to use the Borrow trait and add a peek_mut method.

v0.2.0 - 2019-09-27

  • Release a new minor version because of an accidental breaking change in the previous release (#50).

v0.1.18 - 2019-09-25

  • Add borrowed type support for get_mut.

v0.1.17 - 2019-08-21

  • Return Option from put method which contains old value if it exists.

v0.1.16 - 2019-07-25

  • Implement Borrow trait for KeyRef with nightly OIBIT feature.

v0.1.15 - 2019-04-13

  • Make crate no_std compatible with nightly feature.

v0.1.14 - 2019-04-13

  • Implement IterMut to be able to get a mutable iterator for the cache.

v0.1.13 - 2019-03-12

  • Bug fix to ensure that popped items are released.

v0.1.12 - 2019-03-04

  • Replace standard HashMap with hashbrown HashMap.

v0.1.11 - 2018-12-10

  • Implement Iterator trait for the cache.

v0.1.10 - 2018-11-07

  • Add peek_lru method to get the least recently used element.

v0.1.9 - 2018-10-30

  • Add with_hasher constructor to allow callers to use a custom hash function.

v0.1.8 - 2018-08-19

  • Add pop_lru to remove least recently used element and unbounded constructor.

v0.1.7 - 2018-01-22

  • Implement Send and Sync for the cache.

v0.1.6 - 2018-01-15

  • Add resize method to dynamically resize the cache.

v0.1.5 - 2018-01-15

  • Add get_mut method to get a mutable reference from the cache.

v0.1.4 - 2017-02-19

  • Add function to clear the contents of the cache.

v0.1.3 - 2017-01-02

  • Create internal hashmap with specified capacity.

v0.1.2 - 2017-01-02

  • Add peek and contains functions.

v0.1.1 - 2016-12-31

  • Fix documentation link in Cargo.toml.

v0.1.0 - 2016-12-31

  • Initial release.