When your app does many things at once — downloading data, saving files, updating the UI — it’s easy for two pieces of code to touch the same data at the same time. That’s how bugs like “last write wins” or “I saved the wrong value” happen.
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Jl tta acx ef qxip mepzur, gea cuxw:
Afwnuiy umckapifu, nejeuqovur edxogr usw opdec ecesitiul ey xliih zikcaise.
This content was released on Sep 20 2025. The official support period is 6-months
from this date.
In this lesson you’ll learn what Swift actors are, why they provide exclusive, serialized access, and how reentrancy shapes actor method design. You’ll also see how @MainActor and custom global actors help place work on the right executor, then build a runnable demo that uses an actor-backed image cache.
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