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Title: DesignPattern/20.ObserverPattern at master · unua/DesignPattern · GitHub

Open Graph Title: DesignPattern/20.ObserverPattern at master · unua/DesignPattern

X Title: DesignPattern/20.ObserverPattern at master · unua/DesignPattern

Description: Design pattern demo code. Contribute to unua/DesignPattern development by creating an account on GitHub.

Open Graph Description: Design pattern demo code. Contribute to unua/DesignPattern development by creating an account on GitHub.

X Description: Design pattern demo code. Contribute to unua/DesignPattern development by creating an account on GitHub.

Opengraph URL: https://github.com/unua/DesignPattern/tree/master/20.ObserverPattern

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