golang繼承與多態的一個例子

package main//繼承import (    "fmt")//人類介面type Human interface{OneDay()Work() *Remuneration }//報酬type Remuneration struct{//錢Money int//食物Food  string//爵 位Title string}//人類type People struct{}  func (s *People) Eat(){      println("people eat foot")  }  func (s *People) Drink(){      println("people drink water")  }////某一天的活動，繼承人類介面//func (s *People) OneDay(){  //    s.Eat()//    s.Drink()//}//富人type RichPerson struct{      People      Age  uint32 }  //窮人type PoorPerson struct{      People      Age  uint32 }  //貴族type NoblePerson struct{      People      Age  uint32 }  func (s *RichPerson) Drink(){    println("WangWu drink Orange Juice")  }  func (s *NoblePerson) Drink(){    println("WangWu drink wine")  }func (s *People) Work() *Remuneration {      return &Remuneration{100,"",""}}    func (s *PoorPerson) Work() *Remuneration {      return &Remuneration{0,"bread",""} }    func (s *NoblePerson) Work() *Remuneration {      return &Remuneration{1000,"","may be"}}////某一天的活動，繼承人類介面//func (s *People) OneDay() {  //    s.Eat()//    s.Drink()//    //    println(fmt.Sprintf("%#v", s.Work()))//}//富人RichPerson實現了human介面func (s *RichPerson) OneDay() {      s.Eat()    s.Drink()        println(fmt.Sprintf("%#v", s.Work()))}//窮人PoorPerson實現了human介面func (s *PoorPerson) OneDay() {      s.Eat()    s.Drink()    println(fmt.Sprintf("%#v", s.Work()))}//貴族RichPerson實現了human介面func (s *NoblePerson) OneDay() {      s.Eat()    s.Drink()    println(fmt.Sprintf("%#v", s.Work()))}func main() {      zhangSan := PoorPerson{Age:25}    liSi := RichPerson{Age:26}    wangWu := NoblePerson{Age:27}        zhangSan.OneDay()    liSi.OneDay()    wangWu.OneDay()        println("----------上面的結果和下面的結果一樣------------")        var h1 Human = &zhangSan    var h2 Human = &liSi    var h3 Human = &wangWu        polymorphism(h1)    polymorphism(h2)    polymorphism(h3)}//多態func polymorphism(s Human) {s.OneDay()}

運行結果：

people eat foot
people drink water
&main.Remuneration{Money:0, Food:"bread", Title:""}
people eat foot
WangWu drink Orange Juice
&main.Remuneration{Money:100, Food:"", Title:""}
people eat foot
WangWu drink wine
&main.Remuneration{Money:1000, Food:"", Title:"may be"}
----------上面的結果和下面的結果一樣------------
people eat foot
people drink water
&main.Remuneration{Money:0, Food:"bread", Title:""}
people eat foot
WangWu drink Orange Juice
&main.Remuneration{Money:100, Food:"", Title:""}
people eat foot
WangWu drink wine
&main.Remuneration{Money:1000, Food:"", Title:"may be"}

 

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