string

file.rb

class MyString < String
  @@array_of_strings ||= []
  def self.new(str)
    @@array_of_strings << super(str)
    p @@array_of_strings
  end
  
  private
  def self.all_strings
    p @@array_of_strings
  end
end




class Store
  def self.all_strings
    MyString.send(:all_strings)
  end
end

p Store.all_strings.include? MyString.new("egor")


# []
# ["egor"]