what is Actor

Generated on 9/9/2024

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Actors in Swift are a feature designed to help manage concurrency by encapsulating shared mutable state and automatically protecting it through serialization of accesses. They are similar to classes in that they are reference types, but they ensure that only a single task can execute at a time on an actor. This means that calls to actor methods from outside the actor's context are asynchronous, requiring the use of the await keyword. This feature helps in making concurrent accesses safe and avoiding data races, which can lead to crashes or unpredictable behavior.

For more details, you can refer to the session A Swift Tour: Explore Swift’s features and design (21:38).