![]() You decide when and if you’d like to migrate on a per-target basis when it makes sense for your project. ![]() This will allow you to easily review the changes that were applied via the migration assistant and to discard them and re-try the migration if needed. It’s highly recommended to have your project managed under source control. ![]() You may need to resolve errors initially due to compiler changes. Make sure that the project that you intend to migrate builds successfully in Swift 4 or Swift 4.2 mode, and all its tests pass. Xcode 10.2 comes with a Swift Migrator tool that helps you migrate your project to Swift 5.įor the previous release’s Migration Guide, see Migrating to Swift 4.2.
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