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GoF Patterns
Gang of Four Patterns
Finite State Machines (FSM):?
Short answer: When you have an object that can be in multiple predefined states and its behavior depends on the current state (e.g., traffic lights, order processing systems).
Say this in the interview
- Define — one clear sentence (the short answer above).
- Example — relate it to a project like ShopNest or your real work.
- Trade-off — when you would not use it.
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