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Memento Design Pattern In Objective C

Memento design pattern in Objective C to capture the state of an object without violating encapsulation, so that if required then it can be returned to its previous state.

Output

The state value is : 1
The state value is : 0
Going to previous state
The state value is : 1


Suresh Kumar Srivastava is founder of online learning site coursegalaxy.com and author of popular books C In Depth, Data Structures Through C In Depth. He has 18+ years experience in industry and worked on architecture and design of multiple products. This article Memento Design Pattern In Objective C is from his Design Patterns course.