Array of different types

array-of-different-types.go

package main

import (
	"fmt"
)

type A struct{}

func (A) hi() string {
	return "hi A"
}

type B struct{}

func (B) hi() string {
	return "hi B"
}

type hier interface {
	hi() string
}

func main() {
	arr := []interface{}{&A{}, &B{}}
	fmt.Println(arr[0].(hier).hi(), arr[1].(hier).hi())
}

//https://play.golang.org/p/SqKCIEi7Z1