pf.go

type Car interface {
  Drive() string
}

type SportsCar struct {}

func (s SportsCar) Drive() string {
  return "Vroom vroom!"
}

type SUV struct {}

func (s SUV) Drive() string {
  return "Rumble rumble!"
}

type CarFactory struct {
    prototype Car
}

func (c *CarFactory) SetPrototype(car Car) {
    c.prototype = car
}

func (c *CarFactory) Create() Car {
    return c.prototype
}