How are retain cycles related to MainActor and the use of async/await?

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Retain cycles occur when two objects hold a strong reference to each other, preventing them from being deallocated by the Swift memory management system. This can cause memory leaks and impact the performance of the application.

In relation to MainActor and the use of async/await, retain cycles can occur if an actor performs a long-running task and prevents the main thread from performing other tasks, leading to a deadlock or unresponsive user interface. Async/await can be used to avoid such scenarios by allowing actors to execute tasks asynchronously and without blocking the main thread.

Furthermore, the MainActor can be used to ensure all UI updates are performed on the main thread, preventing potential threading issues and improving the performance of the application. By utilizing async/await and the MainActor, developers can write more efficient and responsive code that avoids retain cycles and threading issues.