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2022-11-11 00:03:18 +00:00
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module observer.subject;
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2022-11-11 07:56:59 +00:00
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2022-11-11 00:03:18 +00:00
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import observer.observer;
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interface Subject
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{
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void registerObserver(Observer o);
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void removeObserver(Observer o);
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void notifyObservers();
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}
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