ruby 公共与私人与受保护

Posted 2021-05-16

class Parent

  private # try `protected` as well
  def name
    'Mommy'
  end
end

class Child < Parent
  def get_parent_name
    # Implicit receiver
    puts name

    # Explicit receiver
    puts self.name rescue puts 'NoMethodError'

    # Explicit receiver
    puts Parent.new.name rescue puts 'NoMethodError'
  end
end

Child.new.get_parent_name