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Which of these is a key advantage of using iterators like each in Ruby compared to traditional loops?

easy📝 Conceptual Q2 of 15
Ruby - Loops and Iteration
Which of these is a key advantage of using iterators like each in Ruby compared to traditional loops?
AThey only work with arrays, not other collections.
BThey automatically handle the loop variable and iteration.
CThey require manual incrementing of counters.
DThey make the code run slower.
Step-by-Step Solution
Solution:

  1. Step 1: Identify iterator behavior

    Iterators like each automatically manage the current element and loop progression.

  2. Step 2: Contrast with traditional loops

    Traditional loops require manual control of counters and loop variables, increasing chance of errors.

  3. Final Answer:

    They automatically handle the loop variable and iteration. -> Option B

  4. Quick Check:

    Iterator advantage = C [OK]
Quick Trick: Iterators manage loop variables for you automatically [OK]
Common Mistakes:
MISTAKES
  • Thinking iterators need manual counters
  • Believing iterators only work with arrays
  • Assuming iterators slow down code

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