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Observer.h

00001 #ifndef OBSERVER_H
00002 #define OBSERVER_H
00003 
00004 
00005 class Subject;
00006 
00024 class Observer {
00025   public:
00028     virtual ~Observer() {} ;
00032     virtual void update(const Subject *const subject) = 0 ;
00033    protected:
00036     Observer() {}
00037 };
00038 
00039 #endif

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