Anonymous classes in Ruby

Question

I have two questions:

1. Does method f_1 belong to the metaclass anonymous class?
2. Does method f_2 belong to the anonymous class?

related to the following code:

car = "car"

class << car
  def self.f_1
    puts "f_1"
  end
  def f_2
    puts "f_2"
  end
end

Answer 1

Since ruby's own API uses the term "singleton class," I'd say the following are true:

1. f_1 is a class method on car's singleton class and can be called like this:

   car.singleton_class.f_1
   

2. f_2 is an instance method on car's singleton class and can be called like this:

   car.f_2