this post was submitted on 03 Sep 2025
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Swift

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Using MainActor.assumeIsolated to Solve Legacy API Compatibility Issues with Swift 6 (fatbobman.com)
submitted 3 months ago by fatbobman@programming.dev to c/swift@programming.dev
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While Swift has offered strict concurrency checking for some time, many of Apple’s official APIs have yet to be fully adapted, and this situation may persist for quite a while. As Swift 6 gradually gains adoption, this problem becomes increasingly prominent: developers want to benefit from the concurrency safety guarantees provided by the Swift compiler, while struggling with how to make their code meet compilation requirements. This article will demonstrate the clever use of MainActor.assumeIsolated in specific scenarios through an implementation case with NSTextAttachmentViewProvider.

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