[Solved] Given this Ruby method, what will it return?def complex arr = [1, 2, 3] arr.map { |n| n * 2 } arr end result = complex | Ruby

Ruby - Methods

Given this Ruby method, what will it return?

def complex
  arr = [1, 2, 3]
  arr.map { |n| n * 2 }
  arr
end
result = complex

Anil

B[1, 2, 3]

C[2, 4, 6]

DError

Step-by-Step Solution

Solution:

Step 1: Trace method statements
arr.map { |n| n * 2 } creates a new array but does not modify arr. The last expression is arr.
Step 2: Understand implicit return
The method returns the last expression arr, which is still [1, 2, 3].
Final Answer:
[1, 2, 3] -> Option B
Quick Check:
Implicit return returns last expression value [OK]

Quick Trick: map returns new array; last expression is original array [OK]

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