[Solved] What will this Ruby code output? class Calculator def add(a, b) a + b end end calc = Calculator.new puts calc.send(:add, 5, 7) | Ruby

Ruby - Metaprogramming Fundamentals

What will this Ruby code output?

class Calculator
  def add(a, b)
    a + b
  end
end

calc = Calculator.new
puts calc.send(:add, 5, 7)

A12

B57

Cadd

DNoMethodError

Step-by-Step Solution

Solution:

Step 1: Analyze the add method
The add method returns the sum of two numbers.
Step 2: Using send with arguments
calc.send(:add, 5, 7) calls add with 5 and 7, returning 12.
Final Answer:
12 -> Option A
Quick Check:
send passes arguments to method and returns result [OK]

Quick Trick: send passes arguments just like normal method call [OK]

Common Mistakes:

Master "Metaprogramming Fundamentals" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

What will this Ruby code output?