private method with + w/o self

ruby_private.rb

class A

  private
  def foo
    puts "Private method called"
  end

end

class B < A

  def call_foo
    foo
  end 

  def call_foo_with_self
    self.foo
  end

end

b = B.new
b.call_foo
b.call_foo_with_self

ruby_protected.rb

class A

  protected
  def foo
    puts "Protected method"
  end

end

class B < A

  def bar
    A.new.foo
  end

end

# does exactly the same as B but doesn't inherit from A
class C

  def bar
    A.new.foo
  end

end


B.new.bar
A.new.foo