[Solved] What issue arises from this Ruby code?arr = Array.new(2, []) arr[0] — Ans: Both elements refer to the same array, so clearing one clears both | Ruby

Ruby - Arrays

What issue arises from this Ruby code?

arr = Array.new(2, [])
arr[0] << 10
arr[1].clear
puts arr.inspect

Aarr[1].clear only affects the second element

BBoth elements refer to the same array, so clearing one clears both

CThe code raises a runtime error due to modifying frozen array

DEach element is a separate array, so no issue occurs

Step-by-Step Solution

Solution:

Step 1: Analyze Array.new with default object
Array.new(2, []) creates an array with two references to the same empty array.
Step 2: Modify one element
arr[0] << 10 adds 10 to the shared array.
Step 3: Clear second element
arr[1].clear empties the same shared array, affecting both elements.
Final Answer:
Both elements refer to the same array, so clearing one clears both -> Option B
Quick Check:
Shared references cause unexpected side effects. [OK]

Quick Trick: Array.new with object shares same reference [OK]

Common Mistakes:

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