[Solved] What is the output of the following Ruby code? class Calculator def add(x, y) x + y end end calc = Calculator.new adder = calc.method(:add) puts adder.call(5, 7) | Ruby

Ruby - Blocks, Procs, and Lambdas

What is the output of the following Ruby code?

class Calculator
  def add(x, y)
    x + y
  end
end
calc = Calculator.new
adder = calc.method(:add)
puts adder.call(5, 7)

A5 7

B12

Cadd

DNoMethodError

Step-by-Step Solution

Solution:

Step 1: Understand method object creation
The method(:add) returns a Method object for add on calc.
Step 2: Calling the Method object
Calling adder.call(5, 7) executes add(5, 7), which returns 12.
Final Answer:
12 -> Option B
Quick Check:
Method object call returns sum 12 [OK]

Quick Trick: Use call on Method object to run method with arguments [OK]

Common Mistakes:

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