Ruby - Arrays
Which method or syntax in Ruby returns the first element of an array
arr?Which method or syntax in Ruby returns the first element of an array arr?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the purpose of
The.first.firstmethod returns the first element of an array in Ruby.Step 2: Compare with other options
arr[1]returns the second element (indexing starts at 0),arr.lastandarr[-1]return the last element.Final Answer:
arr.first -> Option DQuick Check:
First element = arr.first [OK]
Quick Trick: Use .first to get the first element easily [OK]
Common Mistakes:
- Using arr[1] instead of arr[0] for first element
- Confusing .last with .first
- Using negative index for first element
Master "Arrays" in Ruby
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