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Which of the following is the correct method signature for the interpret() method in the Interpreter pattern?

easy🧠 Conceptual Q3 of 15
LLD - Behavioral Design Patterns — Part 2
Which of the following is the correct method signature for the interpret() method in the Interpreter pattern?
Ainterpret(context: Context): void
Binterpret(): void
Cinterpret(expression: string): int
Dinterpret(context: Context): boolean
Step-by-Step Solution
Solution:

  1. Step 1: Recall typical interpret method signature

    The interpret method usually takes a Context object to access global information and returns a result such as boolean.

  2. Step 2: Analyze options

    interpret(context: Context): boolean matches the common signature for evaluating expressions. The others have incorrect parameters or return types.

  3. Final Answer:

    interpret(context: Context): boolean -> Option D

  4. Quick Check:

    interpret method signature = interpret(context: Context): boolean [OK]
Quick Trick: interpret method usually takes Context and returns boolean [OK]
Common Mistakes:
MISTAKES
  • Omitting Context parameter
  • Using wrong return types like void or int

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