Golang 之 面向对象继承(三)

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对于结构体来说,一个是 Phone类型,实现了PhoneFunction接口,这种情况下,无论是Phone还是*Phone都是可以成为接口调用的

package main

import "fmt"

type Phone struct {
    OS string
    Net string
}

type PhoneFunction interface {
    Communicate()
    Online()
}

func Call(OnePhone PhoneFunction) {
    OnePhone.Communicate()
}
func QQ(OnePhone PhoneFunction) {
    OnePhone.Online()
}

func (p Phone) Communicate() {
    fmt.Printf("...呼叫中 \n")
}

func (p Phone) Online() {
    fmt.Printf("...上网中 \n")
}

func main() {
    p := &Phone{"ios", "5G"}
    fmt.Printf("%+v ", p)
    Call(p)
    QQ(p)

    t := Phone{"Android","5G"}
    fmt.Printf("%+v ", t)
    Call(t)
    QQ(t)

}
  • 若将如下方法改成指针接受者,将编译失败
func (p Phone) Communicate() {
    fmt.Printf("...呼叫中 \n")
}

func (p Phone) Online() {
    fmt.Printf("...上网中 \n")
}

# command-line-arguments
src\6_面向对象\OO\oo1\oo1.go:43:6: cannot use t (type Phone) as type PhoneFunction in argument to Call:
    Phone does not implement PhoneFunction (Communicate method has pointer receiver)
src\6_面向对象\OO\oo1\oo1.go:44:4: cannot use t (type Phone) as type PhoneFunction in argument to QQ:
    Phone does not implement PhoneFunction (Communicate method has pointer receiver)
  • 要想编译通过将 t := Phone{“Android”,”5G”}改为t := &Phone{“Android”,”5G”},此时继承的意义也就不存在了

  • 总结
    1.在接口中的method,对于普通类型T,T的methods set里不会继承包含*T实现的method,
    2.除非T自己实现相对应的method。
    3.但是,*T会继承T的method set

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转载自blog.csdn.net/ChangerJJLee/article/details/81095126