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Which design pattern defines one-to-many dependency among objects?(a) Singleton pattern(b) Facade Pattern(c) Observer pattern(d) Factory method patternI had been asked this question in homework.The question is from Software Design Pattern topic in section Design and Implementation of Software Engineering |
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Answer» RIGHT choice is (c) OBSERVER pattern To explain: Observer pattern defines one-to-many DEPENDENCY among OBJECTS so that when one object changes its STATE, all its dependents are notified. |
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