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[ChangeLog] Add an entry for SE-0335. #41065

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Jan 28, 2022
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[ChangeLog] Add an entry for SE-0335. #41065

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19 changes: 19 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -19,6 +19,24 @@ _**Note:** This is in reverse chronological order, so newer entries are added to
Swift 5.6
---------

* [SE-0335][]:

Swift now allows existential types to be explicitly written with the `any`
keyword, creating a syntactic distinction between existential types and
protocol conformance constraints. For example:

```swift
protocol P {}

func generic<T>(value: T) where T: P {
...
}

func existential(value: any P) {
...
}
```

* [SE-0337][]:

Swift now provides an incremental migration path to data race safety, allowing
Expand Down Expand Up @@ -8873,6 +8891,7 @@ Swift 1.0
[SE-0328]: <https://github.com/apple/swift-evolution/blob/main/proposals/0328-structural-opaque-result-types.md>
[SE-0331]: <https://github.com/apple/swift-evolution/blob/main/proposals/0331-remove-sendable-from-unsafepointer.md>
[SE-0337]: <https://github.com/apple/swift-evolution/blob/main/proposals/0337-support-incremental-migration-to-concurrency-checking.md>
[SE-0335]: <https://github.com/apple/swift-evolution/blob/main/proposals/0335-existential-any.md>

[SR-75]: <https://bugs.swift.org/browse/SR-75>
[SR-106]: <https://bugs.swift.org/browse/SR-106>
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