Evolution

Proposal Reviews This category is for posting Swift Evolution proposals for review and feedback. Announcements This category is for announcements of Swift evolution proposal reviews and results, as well as other administrative announcements. Creation of new topics in this category is by site admins and Swift Core Team members only, although anyone can reply to topics once created. Pitches The Pitches category is an area for pitching ideas for evolution of the Swift language prior to a formal review. Discussion The Evolution Discussion category is for general discussion of the evolution of the Swift language.

Topic	Replies	Views	Activity
About the Evolution category Evolution	0	16584	January 18, 2018
[Pitch] Last expression as return value Pitches	461	18735	February 18, 2026
SE-0512: Document that Mutex.withLockIfAvailable(_:) cannot spuriously fail Proposal Reviews mutex	3	323	February 18, 2026
SE-0509: Software Bill of Materials (SBOM) Generation for Swift Package Manager Proposal Reviews packagemanager	9	684	February 18, 2026
[Pre-Pitch]: updating `with{Checked\|Unsafe}Continuation` to support typed throws (and perhaps nonisolated(nonsending)) Pitches	9	331	February 18, 2026
Add assignments into conditional logic Pitches	21	705	February 17, 2026
User defined initializers always call member initializers Discussion	5	1076	February 17, 2026
[AsyncAlgorithms] withDeadline Pitches async-algorithms	29	1155	February 17, 2026
Pitch: Remove discardableResult from throwing task initializers Pitches	25	827	February 17, 2026
C/C++ Interop improvements with SwiftPM for libraries Discussion packagemanager , cxx-interop , interoperability	10	1124	February 16, 2026
SE-0503: Suppressed Default Conformances on Associated Types With Defaults Proposal Reviews	6	589	February 16, 2026
[Accepted] SE-0503: Suppressed Default Conformances on Associated Types With Defaults Announcements	0	162	February 16, 2026
[Pitch] Attribute macros and macro delegation Pitches macros , attached-macros	5	298	February 16, 2026
[Pitch] Allow `some P?` and `any P?` (removing the need for parentheses) Pitches	60	1169	February 16, 2026
`Borrow` and `Inout` types for safe, first-class references Pitches	52	2046	February 15, 2026
What is ~Copyable for? Discussion	53	1759	February 14, 2026
The developer experience of SwiftSyntaxBuilder for Swift macros is very poor Discussion	0	226	February 14, 2026
[Pitch] Named subscripts Pitches	14	1092	February 14, 2026
Where is Swift heading for? Discussion outlandish-phrases	18	983	February 14, 2026
Should Regex be Sendable? Discussion sendable , regex	19	3882	February 13, 2026
SE-0508: Array expression trailing closures Proposal Reviews	16	847	February 13, 2026
[Accepted] SE-0508: Array expression trailing closures Announcements	0	223	February 13, 2026
Pitch: Non-Public Protocol Requirements Discussion protocols	19	763	February 13, 2026
Cannot compose APIs that use typed throws Discussion typed-throws	8	288	February 13, 2026
SE-0511: SwiftPM Add Target Plugin Command Proposal Reviews packagemanager	5	271	February 13, 2026
~Escapable, Span, Ownership Annotations, etc Discussion	44	2261	February 12, 2026
Replacing the Type Checker Discussion	164	12141	February 12, 2026
SE-0505: Delayed Enqueuing for Executors Proposal Reviews	13	766	February 12, 2026
[Returned for Revision] SE-0505: Delayed Enqueuing for Executors Announcements	0	147	February 12, 2026
[Accepted] SE-0504: Task Cancellation Shields Announcements concurrency , structured-concurren	10	497	February 12, 2026