Simple code demonstrating static binding in Go

staticBinding.go

package main

import "fmt"

type Thing interface {
	coolify()
	coolifyAndShout()
}

type CoolThing struct {
}

func (ct CoolThing) coolify() {
	fmt.Println("Now I am cool")
}

func (ct CoolThing) coolifyAndShout() {
	ct.coolify()
	fmt.Println("YAAAAYYY")
}

type CoolerThing struct {
	CoolThing
}

func (ct CoolerThing) coolify() {
	ct.CoolThing.coolify()
	fmt.Println("And even more")
}

func main() {
	var t Thing
	t = CoolerThing{}
	t.coolify()	// Calling CoolerThing's coolify
	fmt.Println("\n\n")
	
	t.coolifyAndShout()	// This method is calling CoolThing's coolify, despite of t being a CoolerThing
}

You can play with this snippet in the Go Playground.