interface studty

sample.go

package main

import "fmt"

type GPS struct {
	lat string
	lon string
}

type Wifi struct {
	ssid    string
	channel string
}
type Bluetooth struct {
	ssid  string
	mejar string
	miner string
}

func (p *GPS) Location() string {
	return p.lat + " " + p.lon
}
func (p *Wifi) Location() string {
	return p.ssid + " " + p.channel
}
func (p *Bluetooth) Location() string {
	return p.ssid + " " + p.mejar + " " + p.miner
}

type Location interface {
	GetLocation() string
}

func printLocation(location GetLocation) {
	fmt.Println(location.Location())
}

func main() {
	gps := &GPS{"1111111", "111111"}
	printLocation(gps)

	wifi := &Wifi{"aaaaaaa", "aaaaaaa"}
	printLocation(wifi)

	bluetooth := &Bluetooth{"bbbbbbb", "bbbbbbb", "bbbbbbb"}
	printLocation(bluetooth)

	location, ok := interface{}(gps).(GetLocation)
	if ok {
		printLocation(location)
	} else {
		fmt.Println("GPS is not GetLocation intreface")
	}
}