Golang Pointers

main.go

package main

// Run this in playground
// https://play.golang.org/p/k47thicjzn

import "fmt"

type Item struct {
	a *Item
	b string
}

func main() {
	var i *Item = &Item{a:&Item{}, b:"pointer"}
	var j *Item = i
	fmt.Printf("%v %v %p %p %v\n", i, j, i, j, i==j)
	
	i.b = "hell!!"
	fmt.Printf("%v %v %p %p %v\n", i, j, i, j, i==j)
	
	i.a = i
	fmt.Printf("%v %v %p %p %v\n", i, j, i, j, i==j)
}

Output

&{0x10436190 pointer} &{0x10436190 pointer} 0x10436180 0x10436180 true
&{0x10436190 hell!!} &{0x10436190 hell!!} 0x10436180 0x10436180 true
&{0x10436180 hell!!} &{0x10436180 hell!!} 0x10436180 0x10436180 true

Source: How do I print the pointer value of a Go object? What does the pointer value mean?