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Allow existential opening for parameters of optional type. #61321

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merged 1 commit into from
Oct 27, 2022
Merged

Allow existential opening for parameters of optional type. #61321

merged 1 commit into from
Oct 27, 2022

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DougGregor
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@DougGregor DougGregor commented Sep 27, 2022 •
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Enable the opening of existential arguments when the corresponding parameter is optional, e.g.,

func f<T: P>(_: T?) { }

func g(p: any P) {
  f(p) // currently does not open p; with this change, open p
}

Potential amendment to SE-0352 is at swiftlang/swift-evolution#1797

@DougGregor DougGregor added the swift evolution pending discussion Flag → feature: A feature that has a Swift evolution proposal currently in review label Sep 27, 2022
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@swift-ci please smoke test

@DougGregor
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@swift-ci please build toolchain

@DougGregor DougGregor mentioned this pull request Sep 27, 2022
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@swift-ci please smoke test

@DougGregor DougGregor marked this pull request as ready for review October 25, 2022 20:14
@xwu xwu added swift evolution approved Flag → feature: A feature that was approved through the Swift evolution process and removed swift evolution pending discussion Flag → feature: A feature that has a Swift evolution proposal currently in review labels Oct 26, 2022
@DougGregor DougGregor merged commit ed93529 into swiftlang:main Oct 27, 2022
@DougGregor DougGregor deleted the open-existential-for-optional-param branch October 27, 2022 03:54
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