passObjByRef.go

package main

import (
	"fmt"
)

type C struct {
  x int
}

type B struct {
  c C
}

type A struct {
  b B
}

func main() {
	c := C{1}
	b := B{c}
	a := A{b}
	
	fmt.Printf("%v %v %v \n", a, b, c)
	
	c.x = 100
	fmt.Printf("%v %v %v \n", a, b, c)
	
	b.c.x = 200
	fmt.Printf("%v %v %v \n", a, b, c)
	
	update01(&a)
	fmt.Printf("%v %v %v \n", a, b, c)
	
	update02(&b)
	fmt.Printf("%v %v %v \n", a, b, c)
	
	update02(&a.b)
	fmt.Printf("%v %v %v \n", a, b, c)
	
	update03(&c)
	fmt.Printf("%v %v %v \n", a, b, c)
	
	update03(&a.b.c)
	fmt.Printf("%v %v %v \n", a, b, c)
}

func update01(a *A){
  a.b.c.x = 2
}

func update02(b *B){
  b.c.x = 3
}

func update03(c *C){
  c.x = 4
}