# \[Amendment\] SE-0430: \`sending\` parameter and result values

**URL:** <https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653>\
**Category:** Proposal Reviews\
**Tags:** concurrency\
**Created:** [June 21, 2024, 8:43pm UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653 "2024-06-21T20:43:07Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![beccadax](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/beccadax/32/34217_2.png) [@beccadax](https://forums.swift.org/u/beccadax)\
**Post date:** [June 21, 2024, 8:43pm UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653/1 "2024-06-21T20:43:07Z")

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Hello Swift community,

The review for an [amendment](https://github.com/swiftlang/swift-evolution/pull/2476/files) to [SE-0430: `sending` parameter and result values](https://github.com/swiftlang/swift-evolution/blob/main/proposals/0430-transferring-parameters-and-results.md) begins now and runs through June 28, 2024.

The amendment brings `UnsafeContinuation.resume(returning:)` into line with `CheckedContinuation.resume(returning:)` by marking its parameter `sending`. The authors have added [a new subsection of "alternatives considered"](https://github.com/swiftlang/swift-evolution/blob/main/proposals/0430-transferring-parameters-and-results.md#exclude-unsafecontinuation) to explain why they believe this design is preferable.

Reviews are an important part of the Swift evolution process. All review feedback should be either on this forum thread or, if you would like to keep your feedback private, directly to the review manager by [email](mailto:beccadax@apple.com). When emailing the review manager directly, please include "SE-0430" in the subject line.

##### What goes into a review?

The goal of the review process is to improve the proposal under review through constructive criticism and, eventually, determine the direction of Swift. When writing your review, here are some questions you might want to answer in your review:

- What is your evaluation of the proposal?
- Is the problem being addressed significant enough to warrant a change to Swift?
- Does this proposal fit well with the feel and direction of Swift?
- If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?
- How much effort did you put into your review? A glance, a quick reading, or an in-depth study?

More information about the Swift evolution process is available at

> [swift-evolution/process.md at main · apple/swift-evolution · GitHub](https://github.com/apple/swift-evolution/blob/main/process.md)

Happy reviewing,

—Becca Royal-Gordon  
SE-0430 Review Manager

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**Author:** ![grynspan](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/grynspan/32/15315_2.png) [@grynspan](https://forums.swift.org/u/grynspan)\
**Post date:** [June 21, 2024, 10:28pm UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653/2 "2024-06-21T22:28:31Z")

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This change is reasonable to me and makes sense in context. 🚢

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**Author:** ![johannesweiss](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/johannesweiss/32/38183_2.png) [@johannesweiss](https://forums.swift.org/u/johannesweiss)\
**Post date:** [June 27, 2024, 10:47am UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653/3 "2024-06-27T10:47:19Z")

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Totally makes sense. +1

nit: [swift-evolution/proposals/0430-transferring-parameters-and-results.md at main · swiftlang/swift-evolution · GitHub](https://github.com/swiftlang/swift-evolution/blob/main/proposals/0430-transferring-parameters-and-results.md#use-transferring-or-sending-instead-of-sendable) still claims it's spelled `sendable` and not `sending` and argues why `sending` isn't a good spelling 🙂 .

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**Author:** ![JJJ](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/jjj/32/12193_2.png) [@JJJ](https://forums.swift.org/u/JJJ)\
**Post date:** [July 12, 2024, 9:03am UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653/4 "2024-07-12T09:03:13Z")

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Along the same lines, should the heading "Sendable Values and Sendable Types" be changed to something like " Sendable Types and Sending Values"?

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**Author:** ![beccadax](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/beccadax/32/34217_2.png) [@beccadax](https://forums.swift.org/u/beccadax)\
**Post date:** [July 17, 2024, 7:56pm UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653/6 "2024-07-17T19:56:23Z")

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The Language Steering Group has decided to **accept** this amendment. See the [announcement](https://forums.swift.org/t/accepted-amendment-se-0430-sending-parameter-and-result-values/73215) for more details.

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**Author:** ![John\_McCall](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/john_mccall/32/1351_2.png) [@John\_McCall](https://forums.swift.org/u/John_McCall)\
**Post date:** [July 17, 2024, 7:59pm UTC](https://forums.swift.org/t/amendment-se-0430-sending-parameter-and-result-values/72653/7 "2024-07-17T19:59:57Z")

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Closed on July 17, 2024, 7:59pm UTC


