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Swift 6.4 Brings New Language Features and Swift Testing/XCTest Interop

Sergio De Simone 2026年06月28日 16:00 2 次阅读来源：InfoQ

Currently available as a beta in Xcode 27, Swift 6.4 introduces a range of enhancements: better C interoperability, simplified OS availability check, fine-grained warning control, async support in defer, efficient iteration for non-noncopyable types, up to 4x faster URL parsing, and improved interoperability between Swift Testing and XCTest. By Sergio De Simone

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# MacOS # iOS # Swift # Programming Languages # Apple

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Swift 6.4 Brings New Language Features and Swift Testing/XCTest Interop

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