Go语言之组合(十九)

  ├── demo
  │    └── demo.go
  ├── go.mod
  └── main.go

      package demo
      import "fmt"
      
      type Animal struct {
          Colour string
      }
      type Dog struct {//dog 结构体包含了Animal结构体的属性和方法
          Animal       //组合
          ID int
          Name string
          Age int
      }
      func (d *Dog)Run()  {
          fmt.Println("ID:",d.ID,"DOG is running")
      }
      func (a *Animal)Eat()  {
          fmt.Println("yu yu yu yu")
      }

  package main
  
  import (
      "./demo"
      "fmt"
  )
  func main()  {
      dog := new(demo.Dog)
      dog.ID = 1
      dog.Name = "GG"
      dog.Age = 5
      dog.Colour = "red"   //继承了Animal的属性
      dog.Eat()            //继承了Animal的方法       yu yu yu yu
      fmt.Println("\r")
      fmt.Println(dog)     //&{{red} 1 GG 5}            
  }