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What does the Ruby method find (also known as detect) do when called on an array?

easy📝 Conceptual Q11 of 15
Ruby - Enumerable and Collection Processing

What does the Ruby method find (also known as detect) do when called on an array?

AIt removes the first element that matches the condition in the block.
BIt returns all elements that match the condition in the block.
CIt returns the first element that matches the condition in the block.
DIt sorts the array based on the block's condition.
Step-by-Step Solution
Solution:
  1. Step 1: Understand the purpose of find

    The find method searches through the array elements one by one.
  2. Step 2: Identify what find returns

    It returns the first element for which the block condition is true, then stops searching.
  3. Final Answer:

    It returns the first element that matches the condition in the block. -> Option C
  4. Quick Check:

    find = first matching element [OK]
Quick Trick: Remember: find returns only the first match, not all matches [OK]
Common Mistakes:
  • Thinking find returns all matches
  • Confusing find with methods that modify the array
  • Assuming find sorts the array

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