[Solved] Find the error in this Ruby code:class Car def initialize(model) @model = model end end car = Car.new('Tesla') car.class_eval do def model_name @model end end | Ruby

Ruby - Advanced Metaprogramming

Find the error in this Ruby code:

class Car
  def initialize(model)
    @model = model
  end
end

car = Car.new('Tesla')
car.class_eval do
  def model_name
    @model
  end
end

Aclass_eval called on instance instead of class

BMissing end keyword for class

CInstance variable @model is not accessible

DSyntax error in method definition

Step-by-Step Solution

Solution:

Step 1: Identify where class_eval is called
The code calls class_eval on car, which is an instance, not a class.
Step 2: Understand class_eval usage
class_eval should be called on the class (Car), not on an instance.
Final Answer:
class_eval called on instance instead of class -> Option A
Quick Check:
class_eval on instance = error [OK]

Quick Trick: Use class_eval on class, not instance objects [OK]

Common Mistakes:

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