Introduction
The Command pattern encapsulates requests as objects, allowing flexible execution, queuing, and undo functionality.
Real-Life Example
A remote control for a smart home system: Each button represents a command (turn on lights, play music, lock doors) without worrying about how the system executes the action.
Pros
Enables undo/redo functionality.
Decouples sender and receiver for flexible command execution.
Supports queuing and logging of requests.
Cons
Can introduce excessive classes if overused.
Might add unnecessary complexity for simple tasks.
When to Use It
When implementing undo/redo features (e.g., text editors, banking transactions).
When requests should be queued or scheduled.
Avoid for direct method calls where no decoupling is needed.
Conclusion
The Command pattern is powerful for request handling but should be used where flexibility and history tracking are required.
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