[Solved] What will be the output of this Ruby code?class Array def first_two self[0..1] end end arr = [10, 20, 30, 40] puts arr.first_two.inspect | Ruby

Ruby - Class Methods and Variables

What will be the output of this Ruby code?

class Array
  def first_two
    self[0..1]
  end
end

arr = [10, 20, 30, 40]
puts arr.first_two.inspect

A[10]

B[10, 20]

C[20, 30]

Dnil

Step-by-Step Solution

Solution:

Step 1: Understand method added to Array
The method first_two returns elements at index 0 and 1 using self[0..1].
Step 2: Apply method on given array
Array is [10, 20, 30, 40], so first_two returns [10, 20].
Final Answer:
[10, 20] -> Option B
Quick Check:
Array slice 0..1 = first two elements [OK]

Quick Trick: Slice array 0..1 to get first two elements [OK]

Common Mistakes:

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