embeded-pointer.go

package main

type A struct {
	Name string
}

type B struct {
	A
}

type C struct {
	*A
}

type Dog interface {
	Bark()
}

func (self *A) Bark() {
	print(self.Name, " says wow\n")
}

func main() {
	a := &A{"taro"}
	b := &B{*a}
	c := &C{a}
	_b := &B{}
	_c := &C{}

	var ad Dog = a
	var bd Dog = b
	var cd Dog = c

	ad.Bark()
	bd.Bark()
	cd.Bark()

	//b = a  // can't assign

	print(b.Name, "\n")
	print(_b.Name, "\n")
	print(_c, "\n")
	//print(_c.Name)  // panic
}