talks/2013/03-golang-learning-lunch/10-abstracts/main.go

40 lines
467 B
Go

package main
func main() {
jeep := Hummer{}
h(jeep)
jeep.Where()
c(jeep)
}
type Car interface {
Honk()
Crank()
}
func c(some interface{}) {
some.(Car).Crank()
}
func h(some interface{}) {
some.(Car).Honk()
}
// Implement the Car interface
type Hummer struct {
Car
}
func (h Hummer) Honk() {
println("BEEP BEEP")
}
func (h Hummer) Where() {
println("Who's got the keys to the jeep?")
}
func (h Hummer) Crank() {
println("VROOOOOOM")
}