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What is the correct signature of the accept method in an element class when implementing the Visitor pattern?

easy🧠 Conceptual Q3 of 15
LLD - Behavioral Design Patterns — Part 2
What is the correct signature of the accept method in an element class when implementing the Visitor pattern?
Aaccept(element: Element): void
Baccept(): void
Caccept(visitor: Visitor): void
Daccept(visitor: Element): void
Step-by-Step Solution
Solution:

  1. Step 1: Recall accept method role

    The accept method takes a visitor object to allow the visitor to perform operations.

  2. Step 2: Identify correct parameter type

    The parameter must be of Visitor type to call visit methods.

  3. Final Answer:

    accept(visitor: Visitor): void -> Option C

  4. Quick Check:

    accept takes Visitor parameter [OK]
Quick Trick: accept method always takes Visitor parameter [OK]
Common Mistakes:
MISTAKES
  • Omitting visitor parameter
  • Passing element instead of visitor
  • Incorrect parameter types

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