Memento design pattern

Memento pattern which is used in undo frameworks to bring an object back to a previous state.

Purpose: Captures and externalizes an object’s internal state without violating encapsulation, allowing the object to be restored to that state later.

When Would I Use This Pattern?

The Memento pattern is useful when you need to provide an undo mechanism in your applications, when the internal state of an object may need to be restored at a later stage. Using serialization along with this pattern, it's easy to preserve the object state and bring it back later on.

Use Cases:

• Document Editors: Mementos can be used to implement undo functionality, where the state of a document is saved and restored.
• Game Save States: Mementos store game states that can be restored to allow players to save and resume their progress.