[Solved] Which of the following is the correct way to define respond_to_missing? in a Ruby class?class MyClass def respond_to_missing?(method_name, include_private = false) # ??? end end | Ruby

Ruby - Metaprogramming Fundamentals

Which of the following is the correct way to define respond_to_missing? in a Ruby class?

class MyClass
  def respond_to_missing?(method_name, include_private = false)
    # ???
  end
end

Areturn method_name == :find_user

Breturn true if method_name.to_s.start_with?("find_")

Creturn false

Dreturn method_missing(method_name)

Step-by-Step Solution

Solution:

Step 1: Check the method signature and expected return
respond_to_missing? should return true or false depending on whether the object can handle the method dynamically.
Step 2: Analyze each option
return true if method_name.to_s.start_with?("find_") returns true if the method name starts with "find_", which is a common pattern for dynamic methods. return method_name == :find_user only returns true for one exact method, which is valid but less flexible. return false always returns false, which defeats the purpose. return method_missing(method_name) incorrectly calls method_missing, which is not correct here.
Final Answer:
return true if method_name.to_s.start_with?("find_") -> Option B
Quick Check:
respond_to_missing? returns true for dynamic method patterns [OK]

Quick Trick: Use method_name.to_s and return true for matching patterns [OK]

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Which of the following is the correct way to define respond_to_missing? in a Ruby class?