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Which of the following is the correct syntax to yield to a block only if it was given?

easy📝 Syntax Q3 of 15
Ruby - Blocks, Procs, and Lambdas
Which of the following is the correct syntax to yield to a block only if it was given?
Ayield unless block_given?
Byield unless block_passed?
Cyield if block_passed?
Dyield if block_given?
Step-by-Step Solution
Solution:

  1. Step 1: Understand how to safely call a block

    Use yield only if a block is given, checked by block_given?.

  2. Step 2: Check the syntax correctness

    yield if block_given? correctly calls the block only when present.

  3. Final Answer:

    yield if block_given? -> Option D

  4. Quick Check:

    Use yield if block_given? to safely call block [OK]
Quick Trick: Use 'yield if block_given?' to call block safely [OK]
Common Mistakes:
  • Using yield without checking block presence
  • Using block_passed? which is invalid
  • Using unless with block_given? incorrectly

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