Golang Interface Example

package main

import (
	"fmt"
)

type Person struct {
	FirstName, LastName string
}

type Worker interface {
	defineUser() string
}

type Personal struct {
	Id       int
	CompanyName string
}

func (p *Person) defineUser() string {
	return fmt.Sprintf("%s %s", p.FirstName, p.LastName)
}

func (pr *Personal) Company(c Worker) string {
	return fmt.Sprintf("Dear \"%s\" (%d) welcome to %s", c.defineUser(), pr.Id, pr.CompanyName)
}

func main() {
	ps := &Personal{23, "Google"}
	u := &Person{"Matt", "Aimonetti"}
	fmt.Println(ps.Company(u))
}