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Which advantage does the Command pattern primarily provide in software design?

easy🧠 Conceptual Q1 of Q15
LLD - Behavioral Design Patterns — Part 1
Which advantage does the Command pattern primarily provide in software design?
ASimplifies UI layout design
BImproves database query performance
CDecouples the object that invokes an operation from the one that knows how to perform it
DAutomatically generates code documentation
Step-by-Step Solution
Solution:

  1. Step 1: Understand the Command pattern role

    The Command pattern encapsulates a request as an object, allowing parameterization and queuing.

  2. Step 2: Identify the main benefit

    It decouples the invoker from the receiver, enabling flexible command execution.

  3. Final Answer:

    Decouples the object that invokes an operation from the one that knows how to perform it -> Option C

  4. Quick Check:

    Command pattern focuses on decoupling [OK]
Quick Trick: Command pattern decouples invoker and executor [OK]
Common Mistakes:
MISTAKES
  • Confusing Command pattern with UI or database optimizations
  • Assuming it automatically handles undo functionality

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