What’s new in swift for breaking code
Generated on 9/6/2024
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In the "What's new in Swift" session at WWDC 2024, several updates were introduced that could potentially impact existing code. One of the major updates is the introduction of the Swift 6 language mode, which provides data race safety guarantees. This new mode is opt-in, allowing developers to adopt it when they are ready, and it can be adopted module by module. This means you can interoperate with dependencies that may not have migrated to the Swift 6 language mode yet.
Additionally, Swift 6 introduces non-copyable types, which suppress the default copyability of Swift types, making them suitable for scenarios requiring unique ownership. This can help prevent runtime issues like multiple writers to the same file and resource leaks.
Another significant update is the introduction of typed throws, which allows specifying the error type along with the throws keyword, eliminating type erasure and making error handling more precise.
For more details, you can refer to the session What’s new in Swift (26:07) where the Swift 6 language mode and data-race safety are discussed.
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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.