How do migrate my code base to swift 6

Generated on 8/3/2024

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To migrate your code base to Swift 6, you can follow a structured process as outlined in the session Migrate your app to Swift 6. Here are the key steps:

  1. Enable Complete Concurrency Checking: This is a per-module setting that leaves your project in Swift 5 mode but enables warnings for all the code that would fail with Swift 6's enforced data isolation. This helps you identify and fix potential issues before fully migrating to Swift 6.

  2. Resolve Warnings: Go through the warnings generated by the concurrency checking and resolve them. This step ensures that your code is ready for the stricter data isolation rules in Swift 6.

  3. Enable Swift 6 Mode: Once all warnings are resolved for a target, enable Swift 6 mode for that target. This locks in your changes and prevents future regressions to unsafe states.

  4. Repeat for All Targets: Repeat the above steps for each target in your project.

  5. Whole App Refactoring: After migrating all targets, you might want to do some whole app refactoring to optimize and clean up your code further.

For more detailed guidance, you can refer to the Swift 6 migration guide available on swift.org, which provides insights and patterns on how best to modify your code to eliminate data races.

Additionally, the session What’s new in Swift covers the new Swift 6 language mode and data-race safety, which can be adopted module by module, allowing you to interoperate with dependencies that may or may not have migrated to Swift 6.

By following these steps, you can ensure a smooth transition to Swift 6 while taking advantage of its new features and safety guarantees.