Tuesday, August 20, 2024

Observer design pattern

 Purpose: Defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.

  • Use Cases:
    • Event Listeners: In GUIs, components like buttons or text fields notify observers (e.g., listeners) of user actions or changes.
    • Publish-Subscribe Systems: News feeds or notification systems use observers to broadcast updates to multiple subscribers.

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