whats new in structured concurrency
Generated on 8/6/2024
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Structured concurrency in Swift has seen several updates and improvements, particularly with the introduction of Swift 6. Here are some key highlights:
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Data-Race Safety: Swift 6 introduces full enforcement of data isolation, which prevents accidental sharing of state between tasks and actors. This helps in catching concurrency bugs at compile time, significantly improving the quality and safety of your code. This is particularly useful for avoiding hard-to-reproduce crashes and data corruption (Migrate your app to Swift 6).
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Complete Concurrency Checking: Swift 6 includes improvements to data race checking, ensuring that any data race issues are turned into compile-time errors. This makes it easier to identify and fix concurrency issues early in the development process (What’s new in Swift).
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Low-Level Synchronization Primitives: The synchronization module in Swift 6 introduces new low-level primitives such as atomics and mutexes. Atomics provide an efficient, lock-free implementation for concurrent access, while mutexes ensure mutually exclusive access to shared resources (What’s new in Swift).
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Incremental Migration: Swift 6 allows for incremental migration to the new concurrency model. You can adopt the new language mode module by module, which helps in managing the transition smoothly, especially when dealing with dependencies that may not yet support Swift 6 (What’s new in Swift).
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Concurrency Safety in Xcode 16: Xcode 16 supports the new concurrency safety guarantees provided by Swift 6. You can start adopting these features incrementally by enabling warnings for upcoming language features in the build settings (What’s new in Xcode 16).
For a more detailed exploration of structured concurrency in Swift, you can check out the session "Explore structured concurrency in Swift" mentioned in A Swift Tour: Explore Swift’s features and design.
Migrate your app to Swift 6
Experience Swift 6 migration in action as we update an existing sample app. Learn how to migrate incrementally, module by module, and how the compiler helps you identify code that’s at risk of data races. Discover different techniques for ensuring clear isolation boundaries and eliminating concurrent access to shared mutable state.
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.
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.
What’s new in Xcode 16
Discover the latest productivity and performance improvements in Xcode 16. Learn about enhancements to code completion, diagnostics, and Xcode Previews. Find out more about updates in builds and explore improvements in debugging and Instruments.