Ruby学习之特殊方法

class SpecialTest
  def info
   puts "This is SpecialTest method"
  end
end
#实例化两个对象
obj1 = SpecialTest.new
obj2 = SpecialTest.new
#两个对象的方法相同
obj1.info
obj2.info
#直接通过对象来修改对象的方法，而不必修改类的方法，同时该方法只属于特殊类obj2
def obj2.info
  puts "This is obj2"
end
obj1.info
obj2.info

执行结果：

This is SpecialTest method

This is SpecialTest method

This is SpecialTest method

This is obj2