从Ruby中的类方法调用私有实例方法

class MyClass
  def initialize
    @my_instance_variable = "Hello, world!"
  end

  private

  def my_private_instance_method
    @my_instance_variable
  end

  def self.my_class_method
    instance = MyClass.new
    instance.send(:my_private_instance_method)
  end
end

MyClass.my_class_method # => "Hello, world!"