Swift & Interoperability
summary
Swift 6 ships New Foundation with shared Swift source on GitHub and a Foundation split into Foundation Essentials and internationalization to cut binary size. Key types like Calendar, JSON parser, URL and string routines are rewritten in Swift, yielding benchmarks such as JSON decoding >200% faster, 38× speedup for valid URL parsing, 128× for invalid, 292× for URL component range access, and ISO 8601 formatting at 2.1M ops/s. A Java interop prototype uses JavaKit JNI wrapper and a Swift code generator with caveats about JVM object pinning and performance.
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chapters (14)
- 0:00Introduction
- 1:29Foundation before Swift 6
- 4:38Requirements for refactoring
- 6:05Swift replacing Objective-C
- 9:16Open source with shared code
- 11:23Results of refactoring
- 12:27Performance improvements
- 15:36What's next for Foundation
- 17:50Community collaboration updates
- 19:33Swift interoperability overview
- 21:21Incremental adoption benefits
- 23:27Java interoperability plans
- 24:50Java interop demo
- 35:48Call for community involvement
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