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What is the main purpose of using unless in Ruby?

easy📝 Conceptual Q1 of 15
Ruby - Control Flow
What is the main purpose of using unless in Ruby?
ATo execute code only if a condition is true
BTo execute code only if a condition is false
CTo create a loop that runs until a condition is true
DTo define a method that runs conditionally
Step-by-Step Solution
Solution:

  1. Step 1: Understand the unless keyword

    unless runs the code block only when the condition is false.

  2. Step 2: Compare with if

    if runs code when condition is true, unless is the opposite.

  3. Final Answer:

    To execute code only if a condition is false -> Option B

  4. Quick Check:

    unless = run if false [OK]
Quick Trick: Use unless to run code when condition is false [OK]
Common Mistakes:
MISTAKES
  • Confusing unless with if
  • Using unless for true conditions
  • Mixing unless with loops

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