Ole Begemann • 5/5/2022

How @MainActor works

This technical article dives into the inner workings of Swift's @MainActor annotation. It explains how @MainActor leverages global actors and custom executors to guarantee functions run on the main thread, with a simplified reimplementation to demystify the concept. The post covers the role of executors in Swift's concurrency model and how a custom executor can be used to dispatch jobs to the main dispatch queue.

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#concurrency #async-await #Swift