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🌉 Bridge Pattern

📌 What is the Bridge Pattern?

The Bridge Pattern is a structural design pattern that decouples an abstraction from its implementation so that the two can vary independently. It allows you to vary the abstraction and the implementation without affecting each other, creating a bridge between them.

🛠️ Key Concepts:

  1. Abstraction → Defines the high-level control logic. It maintains a reference to an object of type Implementation.
  2. Refined Abstraction → Extends the Abstraction and provides more specialized control logic.
  3. Implementation → Defines the interface for implementation classes. This interface doesn't need to match the Abstraction interface; in fact, they can be very different. The Abstraction should only communicate with the Implementation via the Implementation interface.
  4. Concrete Implementation → Implements the Implementation interface, providing specific platform or implementation details.

🔥 When to Use?

✅ When you want to decouple an abstraction from its implementation so that they can evolve independently.
✅ When you need to avoid a permanent binding between an abstraction and its implementation. The bridge lets you switch implementations at runtime.
✅ When both the abstraction and its implementation can have their own hierarchies, and you need to manage these independent hierarchies.
✅ When you want to reduce coupling between the client code and the implementation details.

🎯 Real-World Examples:

  • UI across Platforms 🖥️📱 (Designing UI frameworks that work across different operating systems like Windows, macOS, Linux, or mobile platforms)
  • Remote Controls & Devices 📺📻 (Creating a remote control abstraction that can control different types of devices like TVs, radios, etc.)
  • Drawing APIs 🖍️ (Developing drawing APIs where the drawing logic is independent of the underlying hardware or rendering engine)

💡 Benefits:

✔ Decoupling Abstraction and Implementation – Allows you to change abstraction and implementation independently.
✔ Improved Extensibility – You can extend the abstraction and implementation hierarchies independently.
✔ Runtime Binding of Implementation – You can switch implementations at runtime, enhancing flexibility.
✔ Reduced Coupling – Minimizes the dependency between the abstraction and concrete implementation classes, leading to cleaner design.

🔗 Example Code: See Implementation