Evolution

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. 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	16503	January 18, 2018
Support ~Copyable, ~Escapable in simple standard library protocols Pitches	7	502	November 8, 2025
The future of serialization & deserialization APIs Discussion foundation , codable , macros	169	16551	November 7, 2025
SE-0498: Expose demangle function in Runtime module Proposal Reviews	22	1010	November 7, 2025
SE-0497: Controlling function definition visibility in clients Proposal Reviews abistability , embedded	14	1081	November 6, 2025
[Accepted] SE-0497: Controlling function definition visibility in clients Announcements abistability , embedded	0	139	November 6, 2025
[Pitch] Extensible availability checking Pitches availability	17	1241	November 5, 2025
[Pitch] Simple Enhancement: make String/Substring isASCII available Pitches	14	560	November 5, 2025
ST-0017: Consolidate Swift Testing’s image attachments API across platforms Proposal Reviews swift-testing	10	418	November 5, 2025
[Accepted] ST-0017: Consolidate Swift Testing’s image attachments API across platforms Announcements	0	105	November 5, 2025
Allow trailing commas in parameter lists Pitches	42	4174	November 5, 2025
[Pitch] Improve diagnostic when attempting to send "task-isolated" value Pitches concurrency , task , diagnostics , sending , isolation	3	292	November 5, 2025
[Pitch] Expose demangle function in Runtime module Pitches	22	674	November 5, 2025
Disable "Constant inferred to have type '()'" warning when using async let Pitches	4	234	November 5, 2025
Revisiting Union Types in Swift for typed throws Discussion	6	427	November 4, 2025
SE-0493: Support `async` calls in `defer` bodies Proposal Reviews concurrency	32	1920	November 4, 2025
[Accepted] SE-0493: Support `async` calls in `defer` bodies Announcements	0	209	November 4, 2025
Allow generic constraints for castable types (e.g., where A is B) Discussion	2	295	November 4, 2025
Allow key paths to reference unapplied instance methods Pitches	24	3894	November 2, 2025
[Pitch] Source-Level Control Over Compiler Warnings Pitches	6	439	November 2, 2025
[Pitch] Swift runtime availability Pitches availability	25	1531	November 1, 2025
AsyncAlgorithms: MultiProducerSingleConsumerAsyncChannel Discussion async-algorithms	2	465	October 31, 2025
[Pitch] Predecessor and successor operators for integers Pitches	25	1008	October 31, 2025
[Pitch] Lifting restriction on explicit specialization in function calls Pitches	44	1691	October 31, 2025
Efficient yielding accessor ABI Pitches	4	840	October 29, 2025
ST-0016: Test cancellation Proposal Reviews swift-testing	9	364	October 29, 2025
[Pitch] Allow KeyPaths to represent functions Pitches	19	3621	October 28, 2025
SwiftPM needs a way to ignore or reset its recorded commit for a package Pitches packagemanager , development	11	6717	October 27, 2025
Private (not Protected) Discussion	12	841	October 24, 2025
[Accepted] SE-0495: C-compatible functions and enums Announcements	3	492	October 24, 2025