Evolution

Discussion The Evolution Discussion category is for general discussion of the evolution of the Swift language. Pitches The Pitches category is an area for pitching ideas for evolution of the Swift language prior to a formal review. 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.

Topic	Replies	Views	Activity
About the Evolution category Evolution	0	16829	January 18, 2018
"New Codable" prototype available for feedback Discussion codable , macros	88	8360	November 11, 2026
SE-0556: Cell, ConstCell, and Volatile Proposal Reviews	54	2670	November 11, 2026
SE-0558: Bulk update operations for `MutableSpan` and `MutableRawSpan` Proposal Reviews	8	569	November 10, 2026
Conform Never to CustomStringConvertible Pitches generics , swift-evolution , stdlib , pitch , conformance	19	269	November 10, 2026
[Pitch] Add Issue Capturing & Test-Utility-specific module to Swift Testing Pitches swift-testing	5	369	November 10, 2026
[Pitch] Equatable and Hashable conformances for the span family Pitches	8	488	November 10, 2026
Swift on the GPU Pitches gpu , metal	7	1130	November 10, 2026
[Rejected] SE-0554: Deployment target conditional compilation Announcements	2	397	November 9, 2026
SE-0554: Deployment target conditional compilation Proposal Reviews	44	1839	November 9, 2026
"Relaxed" floating-point operators Pitches	35	1514	November 8, 2026
[Pitch #2] Called-once function types Pitches	32	826	November 8, 2026
Negated type patterns in `catch` Discussion syntax , do-catch , typed-throws	6	589	November 7, 2026
SE-0564: Split Continuations Proposal Reviews	14	878	November 6, 2026
[Pitch] Split continuation Pitches concurrency	13	1731	November 6, 2026
Pitch: Single-yield functions Pitches	21	1346	November 6, 2026
SE-0563: Improve Interaction Between `@main` and Top-Level Code Proposal Reviews	7	445	November 5, 2026
[Pitch] Introduce a way to annotate functions that are called at most once Pitches	117	5813	November 5, 2026
`NDEBUG` vs SPM dependencies Discussion spm , c , assertions	1	139	November 5, 2026
[Pitch] Standard name for common low level C interfaces Pitches	43	1618	November 4, 2026
Pitch: Back-deployment for fixed-layout value types - #3571 Pitches	9	429	November 4, 2026
SE-0559: Add `bidiClass` to `Unicode.Scalar.Properties` Proposal Reviews	7	420	November 4, 2026
Idea: Add dropLast(while:) to BidirectionalCollection Pitches swift-evolution , swift-collections	0	106	November 4, 2026
[Pitch] Allowing Multiple Major Versions of a Package Pitches packagemanager	14	663	November 3, 2026
SE-0562: Ownership for Subscript Parameters Proposal Reviews	0	183	November 3, 2026
Explicit Copies Mode Discussion	23	2354	November 3, 2026
[Accepted] SE-0528: Non-`Copyable` `Continuation` Announcements	6	976	November 3, 2026
SE-0499 marked as Implemented (Swift 6.4), but isn't fully implemented Discussion	0	219	November 3, 2026
SE-0561: Span-based access to `Optional`'s storage Proposal Reviews	0	308	November 3, 2026
Reject likely-unsound script variable forward references Discussion	4	607	November 2, 2026