attr_reader_test.rb

class Person
  attr_reader :attributes # "getter"
	
  def initialize
    @attributes = {}
  end

  def name
    @attributes[:name]
  end
end

john_doe = Person.new
# #<Person:0x007fa713c56d60 @attributes={}>

john_doe.attributes
# {}

john_doe.attributes[:name] = "John Doe"
# { :name => "John Doe}

john_doe.name
# "John Doe"