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## 0.8.0

### Added

- `Dry::Core::BasicObject` ported from hanami-utils (@jodosha)

### Changed

- [BREAKING] [descendants tracker] switch to using `Class#subclasses` on Ruby 3.1+.
This changes the order of returned subclasses (immediate subclasses now go first) (@flash-gordon)


[Compare v0.7.1...v0.8.0](https://github.com/dry-rb/dry-core/compare/v0.7.1...master)

## 0.7.1 2021-07-10


### Fixed

- [memoizable] memoizable correctly handles cases where a method
has unnamed params (e.g. happens when the new `...` syntax is used) (@flash-gordon)


[Compare v0.7.0...v0.7.1](https://github.com/dry-rb/dry-core/compare/v0.7.0...v0.7.1)

## 0.7.0 2021-07-08


### Fixed

- [memoizable] warnings when using keyword arguments (@flash-gordon)
- [deprecations] warnings show more relevant information about caller by default (@timriley)

### Changed

- Minimal Ruby version is 2.6
- [memoizable] memoization of block-accepting methods is deprecated (@flash-gordon)

[Compare v0.6.0...v0.7.0](https://github.com/dry-rb/dry-core/compare/v0.6.0...v0.7.0)

## 0.6.0 2021-06-03


### Added

- [memoizable] support for `BasicObject` (@oleander)
- [memoizable] support for methods that accept blocks (@oleander)
- [deprecations] allow printing frame info on warn when setting up Deprecation module (via #52) (@waiting-for-dev)

### Fixed

- [memoizable] works with MRI 2.7+ keyword arguments now (@oleander)


[Compare v0.5.0...v0.6.0](https://github.com/dry-rb/dry-core/compare/v0.5.0...v0.6.0)

## 0.5.0 2020-12-12


### Added

- dry-equalizer has been imported into dry-core as `Dry::Core::Equalizer` but the interface remains the same, which is `include Dry.Equalizer(...)` - we'll be porting all other gems that depend on dry-equalizer to the latest dry-core with equalizer included *gradually*. Eventually dry-equalizer usage will be gone completely in rom-rb/dry-rb/hanami projects (@solnic)


[Compare v0.4.10...v0.5.0](https://github.com/dry-rb/dry-core/compare/v0.4.10...v0.5.0)

## 0.4.10 2020-11-19


### Added

- `ClassAttributes.defines` gets a new option for coercing values (tallica)
```ruby
class Builder
  extend Dry::Core::ClassAttributes

  defines :nodes, coerce: -> value { Integer(value) }
end
```
`:coerce` works with any callable as well as types from dry-types
```ruby
defines :nodes, coerce: Dry::Types['coercible.integer']
```
- `Constants::IDENTITY` which is the identity function (flash-gordon)


[Compare v0.4.9...v0.4.10](https://github.com/dry-rb/dry-core/compare/v0.4.9...v0.4.10)

## 0.4.9 2019-08-09


### Added

- `Undefined.coalesce` takes a variable number of arguments and returns the first non-`Undefined` value (flash-gordon)

  ```ruby
  Undefined.coalesce(Undefined, Undefined, :foo) # => :foo
  ```

### Fixed

- `Undefined.{dup,clone}` returns `Undefined` back, `Undefined` is a singleton (flash-gordon)


[Compare v0.4.8...v0.4.9](https://github.com/dry-rb/dry-core/compare/v0.4.8...v0.4.9)

## 0.4.8 2019-06-23


### Added

- `Undefined.map` for mapping non-undefined values (flash-gordon)

  ```ruby
  something = 1
  Undefined.map(something) { |v| v + 1 } # => 2

  something = Undefined
  Undefined.map(something) { |v| v + 1 } # => Undefined
  ```


[Compare v0.4.7...v0.4.8](https://github.com/dry-rb/dry-core/compare/v0.4.7...v0.4.8)

## 0.4.7 2018-06-25


### Fixed

- Fix default logger for deprecations, it now uses `$stderr` by default, as it should (flash-gordon)


[Compare v0.4.6...v0.4.7](https://github.com/dry-rb/dry-core/compare/v0.4.6...v0.4.7)

## 0.4.6 2018-05-15


### Changed

- Trigger constant autoloading in the class builder (radar)

[Compare v0.4.5...v0.4.6](https://github.com/dry-rb/dry-core/compare/v0.4.5...v0.4.6)

## 0.4.5 2018-03-14


### Added

- `Dry::Core::Memoizable`, which provides a `memoize` macro for memoizing results of instance methods (timriley)


[Compare v0.4.4...v0.4.5](https://github.com/dry-rb/dry-core/compare/v0.4.4...v0.4.5)

## 0.4.4 2018-02-10


### Added

- `deprecate_constant` overrides `Module#deprecate_constant` and issues a labeled message on accessing a deprecated constant (flash-gordon)
- `Undefined.default` which accepts two arguments and returns the first if it's not `Undefined`; otherwise, returns the second one or yields a block (flash-gordon)


[Compare v0.4.3...v0.4.4](https://github.com/dry-rb/dry-core/compare/v0.4.3...v0.4.4)

## 0.4.3 2018-02-03


### Added

- `Dry::Core::DescendantsTracker` which is a maintained version of the [`descendants_tracker`](https://github.com/dkubb/descendants_tracker) gem (flash-gordon)


[Compare v0.4.2...v0.4.3](https://github.com/dry-rb/dry-core/compare/v0.4.2...v0.4.3)

## 0.4.2 2017-12-16


### Fixed

- Class attributes now support private setters/getters (flash-gordon)


[Compare v0.4.1...v0.4.2](https://github.com/dry-rb/dry-core/compare/v0.4.1...v0.4.2)

## 0.4.1 2017-11-04


### Changed

- Improved error message on invalid attribute value (GustavoCaso)

[Compare v0.4.0...v0.4.1](https://github.com/dry-rb/dry-core/compare/v0.4.0...v0.4.1)

## 0.4.0 2017-11-02


### Added

- Added the `:type` option to class attributes, you can now restrict attribute values with a type. You can either use plain ruby types (`Integer`, `String`, etc) or `dry-types` (GustavoCaso)

  ```ruby
  class Foo
    extend Dry::Core::ClassAttributes

    defines :ruby_attr, type: Integer
    defines :dry_attr, type: Dry::Types['strict.int']
  end
  ```


[Compare v0.3.4...v0.4.0](https://github.com/dry-rb/dry-core/compare/v0.3.4...v0.4.0)

## 0.3.4 2017-09-29


### Fixed

- `Deprecations` output is set to `$stderr` by default now (solnic)


[Compare v0.3.3...v0.3.4](https://github.com/dry-rb/dry-core/compare/v0.3.3...v0.3.4)

## 0.3.3 2017-08-31


### Fixed

- The Deprecations module now shows the right caller line (flash-gordon)


[Compare v0.3.2...v0.3.3](https://github.com/dry-rb/dry-core/compare/v0.3.2...v0.3.3)

## 0.3.2 2017-08-31


### Added

- Accept an existing logger object in `Dry::Core::Deprecations.set_logger!` (flash-gordon)


[Compare v0.3.1...v0.3.2](https://github.com/dry-rb/dry-core/compare/v0.3.1...v0.3.2)

## 0.3.1 2017-05-27


### Added

- Support for building classes within an existing namespace (flash-gordon)


[Compare v0.3.0...v0.3.1](https://github.com/dry-rb/dry-core/compare/v0.3.0...v0.3.1)

## 0.3.0 2017-05-05


### Changed

- Class attributes are initialized _before_ running the `inherited` hook. It's slightly more convenient behavior and it's very unlikely anyone will be affected by this, but technically this is a breaking change (flash-gordon)

[Compare v0.2.4...v0.3.0](https://github.com/dry-rb/dry-core/compare/v0.2.4...v0.3.0)

## 0.2.4 2017-01-26


### Fixed

- Do not require deprecated method to be defined (flash-gordon)


[Compare v0.2.3...v0.2.4](https://github.com/dry-rb/dry-core/compare/v0.2.3...v0.2.4)

## 0.2.3 2016-12-30


### Fixed

- Fix warnings on using uninitialized class attributes (flash-gordon)


[Compare v0.2.2...v0.2.3](https://github.com/dry-rb/dry-core/compare/v0.2.2...v0.2.3)

## 0.2.2 2016-12-30


### Added

- `ClassAttributes` which provides `defines` method for defining get-or-set methods (flash-gordon)


[Compare v0.2.1...v0.2.2](https://github.com/dry-rb/dry-core/compare/v0.2.1...v0.2.2)

## 0.2.1 2016-11-18


### Added

- `Constants` are now available in nested scopes (flash-gordon)


[Compare v0.2.0...v0.2.1](https://github.com/dry-rb/dry-core/compare/v0.2.0...v0.2.1)

## 0.2.0 2016-11-01


[Compare v0.1.0...v0.2.0](https://github.com/dry-rb/dry-core/compare/v0.1.0...v0.2.0)

## 0.1.0 2016-09-17

Initial release