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in Technique[技术] by (71.8m points)

golang方法继承与接收者的问题?

代码如下

type Person struct {
 name string
}
type Student struct {
 Person
 name string
}
func (p Person) Name() {
 fmt.Println(p.name)
}

func main() {
 var student = Student{Person{"human"}, "aaron"}
 student.Name()
}

如上,此时打印出来的name值是human,那么怎样才能再Name方法中能获取到Student的name,就是说想在Name方法中获取到Student的对象。这只能使用方法重写吗?


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1 Answer

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by (71.8m points)

go强调组合,准确来说是没有继承一说,只是模拟面向对象的继承,同js中用原型来凑一样的道理。作为面向对象的基础类概念,本质上是将数据与操作集整合在一起,go中没有类,没有构造器,只有结构体与函数,它的所谓方法,只是一种特殊的携带接收者的函数。这种 方法属性分离的骚操作,python 也干过,总之习惯就好。


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