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	16605	January 18, 2018
ST-0024: Per-test-case repetitions Proposal Reviews swift-testing	3	113	April 11, 2026
Pitch: Make test repetition per-test-case instead of global Pitches swift-testing	4	288	April 10, 2026
[Pitch] RigidArray and UniqueArray Pitches swift-collections	26	1308	April 10, 2026
[Accepted] SE-0523: Hashable conformance for UnownedTaskExecutor Announcements	1	219	April 10, 2026
SE-0519: Borrow and Inout types for safe, first-class references Proposal Reviews	76	3115	April 9, 2026
[Pitch] Package Resolution Authentication via Environment Variables Pitches packagemanager	4	211	April 9, 2026
SE-0523: Hashable conformance for UnownedTaskExecutor Proposal Reviews	7	627	April 9, 2026
SE-0526: withDeadline Proposal Reviews	23	823	April 9, 2026
[Pitch] Async Result Support Pitches concurrency	16	563	April 9, 2026
[Pitch] A Structured Approach to Build and Test Results Data Pitches xcode , tools , xctest , build-tools , swift-testing	2	351	April 8, 2026
SE-0517: UniqueBox Proposal Reviews	100	3710	April 8, 2026
[Pitch] First-Class Dependency Injection Support Using Macros and Attributes Pitches discussion , macros	0	206	April 8, 2026
SE-0522: Source-Level Control Over Compiler Warnings Proposal Reviews	31	1435	April 7, 2026
[Accepted] SE-0522: Source-Level Control Over Compiler Warnings Announcements	0	173	April 7, 2026
[Pitch #3] Compile-time lifetime dependency annotations Pitches	8	656	April 7, 2026
[Pitch] Chained logical NOT `.!` Pitches	15	628	April 7, 2026
SE-0516: Borrowing Sequence Proposal Reviews	14	1728	April 7, 2026
[Returned for revision] SE-0516: Borrowing Sequence Announcements	0	207	April 7, 2026
SE-0525: Safe loading API for RawSpan Proposal Reviews	8	592	April 6, 2026
[Amend] SE-0469 Task names to include instance property Pitches	7	771	April 6, 2026
[Amended] SE-0469: Task Naming Announcements	1	173	April 6, 2026
Pitch 2: Add FilePath to stdlib Pitches	7	415	April 6, 2026
ST-0023: Transferable Attachments Proposal Reviews swift-testing	3	322	April 6, 2026
Handling future cases of enums in libraries without binary stability concerns Pitches enums	11	4311	April 6, 2026
[Pitch] Memberwise reinitialization for let properties of struct when the synthesized memberwise initializer is available Pitches init , swift , immutability , structs , value-semantics	7	557	April 4, 2026
[Pitch] Transferable Attachments Pitches swift-testing	3	651	April 4, 2026
[Pitch] borrow/mutate accessors, & immutable borrow, and mutating in signatures Pitches ownership , performance	5	665	April 3, 2026
Discussion: Opt-in obj-c to Swift async bridging with Task.immediate Pitches concurrency	8	532	April 2, 2026
[Pitch] Platform conditional shorthand with on/or keywords Pitches	6	639	April 1, 2026