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<!--
SPDX-FileCopyrightText: 2018 - 2023 Kamila Borowska <kamila@borowska.pw>
SPDX-FileCopyrightText: 2021 Alex Sayers <alex@asayers.com>
SPDX-License-Identifier: MIT OR Apache-2.0
-->
# Version 2.7.3
## Other changes
- Fixed [a regression introduced in 2.7.2 that caused `#[derive(Enum)]` to
generate incorrect code when dealing with enums containing
fields](https://codeberg.org/xfix/enum-map/issues/112).
# Version 2.7.2
## Other changes
- Reduced RAM usage and improved compilation times when using `derive(Enum)`
for large enums with `overflow-checks` enabled.
# Version 2.7.1
## Other changes
- Updated author name.
# Version 2.7.0
## New features
- Implemented `EnumMap::from_fn`.
# Version 2.6.3
## Other changes
- Updated the repository URL as the project was migrated from GitHub
to Codeberg.
- This project is now compliant with the REUSE Specification.
# Version 2.6.2
## Other changes
- Hide `out_of_bounds` reexport from documentation.
# Version 2.6.1
## Other changes
- Provide better panic message when providing out-of-bounds index
to `Enum::from_usize``.
# Version 2.6.0
## New features
- `EnumMap::as_array` is now usable in const contexts.
## Other changes
- This crate now follows "N minus two" MSRV policy. This means that
it supports the current Rust release, as well as the two before
that.
- Upgraded syn to 2.0.0.
# Version 2.5.0
## New features
- Implemented `EnumMap::as_array` and `EnumMap::as_mut_array`
(implemented by [@Fuuzetsu](https://github.com/Fuuzetsu)).
- Implemented `PartialOrd` and `Ord` for `EnumMap` (implemented by
[@nicarran](https://github.com/nicarran)).
# Version 2.4.2
## Other changes
- Added license files to crate tarball.
- Added changelog to crate tarball.
# Version 2.4.1
## Other changes
- Improved performance of code generated for `from_usize` when
deriving `Enum`.
# Version 2.4.0
## New features
- Implemented `Enum` for `()` (unit type) and `core::cmp::Ordering`
(implemented by [@phimuemue](https://github.com/phimuemue)).
- Implemented `EnumMap::into_array`.
# Version 2.3.0
## New features
- `EnumMap::len` is now usable in const contexts.
## Other changes
- `Enum` derive now can deal with re-definitions of `usize` and
`unimplemented`.
# Version 2.2.0
## New features
- `EnumMap::from_array` is now usable in const contexts.
# Version 2.1.0
## New features
- Implemented `DoubleEndedIterator` for `IntoIter`.
- Implemented `EnumMap::into_values`.
## Other changes
- Changed behavior of `IntoIter` so that it drops rest of the elements
when one destructor panics.
# Version 2.0.3
## Other changes
- Optimized performance of `enum_map!` macro.
# Version 2.0.2
## Other changes
- Fixed safety problem when using `enum_map!` macro with enums that
incorrectly implemented `Enum` trait.
# Version 2.0.1
## Other changes
- Adjusted crate metadata to avoid lib.rs warnings.
# Version 2.0.0
## New features
- Implemented `FromIterator` for `EnumMap` (implemented by @bit_network
on GitLab).
- Implemented `EnumMap::map`.
- Derives support product types in addition to sum types (implemented
by @bzim on GitLab).
- It's now possible to access enum length by accessing `LENGTH` in
`Enum` trait.
## Breaking changes
- `Enum` trait was split into two traits, `Enum` and `EnumArray`.
# Version 1.1.1
## Other changes
- Worked around a bug in Clippy that caused false positives when using
`use_self` lint for code that derived `Enum` trait.
# Version 1.1.0
## New features
- Implemented `Arbitrary` for maps where the value type also implements
`Arbitrary`. (You have to enable the "arbitrary" feature.)
# Version 1.0.0
## New features
- It's now possible to use `return` and `?` within `macro_rules!` macro.
- `Enum` trait is much simpler having two methods only.
## Other changes
- Removed previously deprecated features.
- Renamed `to_usize` to `into_usize` matching the naming convention
used in Rust programming language.
# Version 0.6.5
## Other changes
- Deprecated `EnumMap::is_empty` and `EnumMap::new`. `EnumMap::new` usages
can be replaced with `EnumMap::default`.
# Version 0.6.4
## Other changes
- Deprecated `EnumMap::as_ptr` and `EnumMap::as_mut_ptr`.
# Version 0.6.3
## New features
- `Iter` and `Values` now implements `Clone` (added by @amanieu).
# Version 0.6.2.
## New features
- Added `EnumMap#clear` method (added by @Riey, thanks :)).
# Version 0.6.0
## Incompatible changes
- Now requires Rust 1.36.
# Version 0.5.0
- Fixed the issue where an aliasing `From` trait implementation caused
compilation errors with `enum_map!` macro.
## Incompatible changes
- Now requires Rust 1.31.
# Version 0.4.1
## New features
- Default `serde` features are disabled. This allows enabling serde feature when
compiling without `std`.
# Version 0.4.0
Change of `#[derive(EnumMap)]` to `#[derive(Enum)]` was supposed to appear in 0.3.0,
but it was forgotten about. This release fixes just that.
## Incompatible changes
- Changed `#[derive(EnumMap)]` to `#[derive(Enum)]` to match trait name.
# Version 0.3.1
- Updated README use `#[derive(EnumMap)]` instead of `#[derive(Enum)]`.
# Version 0.3.0
## New features
- Implemented compact serde serialization for binary formats like bincode.
- Iterator traits with exception now implement `FusedIterator`.
## Incompatible changes
- Increased required Rust version to 1.26.0.
- Renamed `Internal` trait to `Enum`.
- Added new associated constant `POSSIBLE_VALUES` to `Enum` trait,
representing the number of possible values the type can have. Manual
implementations are required to provide it.
- Removed `Enum` implementation for `Option<T>`.
- Implemented compact serialization, for formats like `bincode`. This
makes it impossible to deserialize non-compact representation used by
enum-map 0.2.0.
- `values` method returns `Values<V>` as opposed to `slice::Iter<V>`.
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