observe should take @isolated(any) functions
#306
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−26
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stephencelis
commented
Sep 10, 2025
| @_inheritActorContext _ apply: @escaping @isolated(any) @Sendable () -> Void | ||
| ) -> ObserveToken { | ||
| observe(isolation: isolation) { _ in apply() } | ||
| observe { _ in Result(catching: apply).get() } |
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This is a trick similarly employed by the Observations type to convert an @isolated(any) to a synchronous function. I'm not sure if there is a more legit way to assume the isolation of a closure to perform it synchronously.
mbrandonw
approved these changes
Sep 10, 2025
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The current signatures were the result of fighting language changes in real time, and while it mostly worked in a non-default main actor world, I think this is more correct.