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What is the primary benefit of using the Memento pattern in software design?

easy🧠 Conceptual Q1 of 15
LLD - Behavioral Design Patterns — Part 2
What is the primary benefit of using the Memento pattern in software design?
AIt allows an object to save and restore its previous state without exposing its internal details.
BIt helps in creating multiple instances of a class efficiently.
CIt provides a way to share data between unrelated objects.
DIt simplifies the process of object creation by using a builder.
Step-by-Step Solution
Solution:

  1. Step 1: Understand the purpose of Memento pattern

    The Memento pattern is designed to capture and externalize an object's internal state so that it can be restored later without violating encapsulation.

  2. Step 2: Compare options with the pattern's purpose

    It allows an object to save and restore its previous state without exposing its internal details. correctly describes saving and restoring state without exposing internal details. Other options describe different patterns or concepts.

  3. Final Answer:

    It allows an object to save and restore its previous state without exposing its internal details. -> Option A

  4. Quick Check:

    Memento pattern purpose = Save and restore state [OK]
Quick Trick: Memento = save and restore state privately [OK]
Common Mistakes:
MISTAKES
  • Confusing Memento with Builder or Prototype patterns
  • Thinking Memento exposes internal object details
  • Mixing Memento with data sharing patterns

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