https://www.infoq.com InfoQ Swift feed https://www.infoq.com/news/2026/06/swift-6-4-beta-features/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=Swift <img src="https://res.infoq.com/news/2026/06/swift-6-4-beta-features/en/headerimage/android-studio-otter-llm-1782634112952.jpeg"/><p>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.</p> <i>By Sergio De Simone</i> MacOS iOS Swift Programming Languages Apple Mobile Development news Sun, 28 Jun 2026 08:00:00 GMT https://www.infoq.com/news/2026/06/swift-6-4-beta-features/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=Swift Sergio De Simone 2026-06-28T08:00:00Z /news/2026/06/swift-6-4-beta-features/en