我是
Ruby的Nuby.我正在寻找一种方法来获取当前执行行的方法的包含Class对象.这可能没有硬编码类名吗？
# hardcoded example
class A
def to_s
"I am a " + A.to_s # Class "A" is hardcoded here. Is there another way to reference the class A?
end
end
我认为也许self.class可以工作,但是当类被子类化时它没有给我我想要的东西.
# Following Outputs=> I am a Camel I am a Camel I am a Camel
# but I want => I am a Camel I am a Mammal I am a Animal
class Animal
def to_s
"I am a " + self.class.to_s
end
end
class Mammal < Animal
def to_s
"I am a " + self.class.to_s + " " + super
end
end
class Camel < Mammal
def to_s
"I am a " + self.class.to_s + " " + super
end
end
puts Camel.new()
解决方法
试试这个
Class.nesting.first
这为您提供了方法的定义类.
class A
def example
{ defining_class: Class.nesting.first,self_class: self.class }
end
end
class B < A
end
B.new.example
# => {:defining_class=>A,:self_class=>B}