Beginning Core Data · Challenge: Fixing Sorting Issues | raywenderlich.com

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This is a companion discussion topic for the original entry at https://www.raywenderlich.com/7104-beginning-core-data/lessons/11
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Using DispatchQueue.main.async{}
When is it necessary to update view elements in dispatchqueue.main.async and when not?
For eg.,
searchBar.text = nil
In the tutorial code, this was not inside main.async, is there any logic to know which code to run on DispatchQueue.main.async?

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You always need to update all your view elements on the main thread. The UI elements aren’t thread-safe and will become corrupted if you attempt to update them from the background.

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Hi thanks for the response, watched the ios beginner courses. It was clarified there :slight_smile:

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Awesome! Glad to hear you got clarification!