what new swift?
Generated on 5/1/2025
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At WWDC 2024, Apple introduced several new features and improvements in Swift, particularly with the release of Swift 6. Here are some of the highlights:
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Swift 6 Language Mode: This new mode introduces compile-time data race safety, which helps diagnose concurrent access to memory and makes concurrent programming easier. This feature is opt-in, allowing developers to migrate incrementally and tackle data races in their code when ready.
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Non-Copyable Types: Swift 6 introduces non-copyable types, which suppress the default copyability of Swift types. This is useful for scenarios requiring unique ownership, such as managing system resources like files.
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Embedded Swift: A new language subset called Embedded Swift is introduced, which can run on highly constrained systems, expanding Swift's applicability.
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Community and Ecosystem: The Swift project is moving to a new organization on GitHub, and there are efforts to expand the community and ecosystem with new steering groups and workgroups.
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C++ Interoperability and Typed Throws: Improvements in interoperability with C++ and the introduction of typed throws are also part of the new features in Swift 6.
For more detailed information, you can refer to the session What’s new in Swift (17:03) which covers language updates and other new features.
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What’s new in Swift
Join us for an update on Swift. We’ll briefly go through a history of Swift over the past decade, and show you how the community has grown through workgroups, expanded the package ecosystem, and increased platform support. We’ll introduce you to a new language mode that achieves data-race safety by default, and a language subset that lets you run Swift on highly constrained systems. We’ll also explore some language updates including noncopyable types, typed throws, and improved C++ interoperability.
A Swift Tour: Explore Swift’s features and design
Learn the essential features and design philosophy of the Swift programming language. We’ll explore how to model data, handle errors, use protocols, write concurrent code, and more while building up a Swift package that has a library, an HTTP server, and a command line client. Whether you’re just beginning your Swift journey or have been with us from the start, this talk will help you get the most out of the language.