[Solved] Identify the error in this Ruby code:class Test def method_added(name) puts "Added: #{name}" end def example; end end | Ruby

Ruby - Advanced Metaprogramming

Identify the error in this Ruby code:

class Test
  def method_added(name)
    puts "Added: #{name}"
  end

  def example; end
end

ANo error, code runs fine

Bmethod_added must not accept any parameters

Cexample method must be defined after method_added

Dmethod_added should be a class method, not instance method

Step-by-Step Solution

Solution:

Step 1: Check method_added definition
It is defined as an instance method, but Ruby expects it as a class method to hook method additions.
Step 2: Understand consequence
Because it's not a class method, the hook won't be called when instance methods are added.
Final Answer:
method_added should be a class method, not instance method -> Option D
Quick Check:
method_added must be class method [OK]

Quick Trick: method_added must be defined with self. to work [OK]

Common Mistakes:

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