Ruby - Basics and Runtime
What will this Ruby code print?
array = [1, 2, 3]
result = array.map { |n| n * 2 }
puts result.inspectWhat will this Ruby code print?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand map method on array
map applies the block to each element, multiplying each by 2.Step 2: Check the resulting array
Each element doubled: 1*2=2, 2*2=4, 3*2=6, so result is [2, 4, 6].Final Answer:
[2, 4, 6] -> Option AQuick Check:
map doubles elements = [2,4,6] [OK]
Quick Trick: map transforms each element in an array [OK]
Common Mistakes:
MISTAKES- Confusing map with each (which returns original array)
- Expecting original array without changes
- Thinking map is undefined for arrays
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