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Misusing @StateObject in SwiftUI

  • Apple introduced @StateObject in SwiftUI to simplify creation and management of reference-type models in views.
  • StateObject is meant to 'own' the object's lifecycle and persist it across view redraws.
  • Apple recommends instantiating each StateObject within the view that owns it, not externally.
  • Passing a @StateObject instance externally can lead to bugs or unexpected state resets.

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