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What is the main purpose of the Visitor pattern in system design?

easy🧠 Conceptual Q11 of 15
LLD - Behavioral Design Patterns — Part 2
What is the main purpose of the Visitor pattern in system design?
ATo separate operations from the objects on which they operate
BTo create multiple instances of a class
CTo restrict access to certain parts of an object
DTo simplify database queries
Step-by-Step Solution
Solution:

  1. Step 1: Understand the Visitor pattern concept

    The Visitor pattern allows defining new operations on objects without changing their classes.

  2. Step 2: Identify the main goal

    Its main goal is to separate the operation logic from the object structure to keep code flexible.

  3. Final Answer:

    To separate operations from the objects on which they operate -> Option A

  4. Quick Check:

    Visitor pattern = separates operations [OK]
Quick Trick: Visitor pattern separates operations from objects [OK]
Common Mistakes:
MISTAKES
  • Confusing Visitor with Singleton pattern
  • Thinking it creates object instances
  • Assuming it controls access permissions

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