typeassert.go

package main

import (
	"log"
	"reflect"
)

type dummy interface{}

func main() {
	x := readtodummy("hello")
	y := x.(string)
	log.Println(x == y)
	log.Println(reflect.DeepEqual(x, y))
	log.Println(x, y)
}

func readtodummy(s dummy) (d dummy) {
	d = s
	return d
}