A counter screen built in SwiftUI has increment, decrement, and reset buttons plus a display of the current value. How would you arrange the state so the displayed number can never disagree with the actual value after a button press?
Keep only a single integer for the counter value in @State or an @Observable model, and compute the displayed number and whether the decrement button is enabled from that value. If you don't store a display string or flags separately, there's only one stored value, so the display and the actual value have no way to disagree.
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