// 6g test.go && 6l test.6 && ./6.out && rm test.6 6.out

package main

import "fmt"

// gives same output with this delcaration:
// func showObject(o String) {

func showObject(o Object) {
	switch o.(type) {
	case int:
		fmt.Println("int!")
	case Integer:
		fmt.Println("integer!")
	case String:
		fmt.Println("string!")
	case Object:
		fmt.Println("object!")
	}
}

type Object interface{}
type String Object
type Integer Object

func main() {
	a := String("foo")
	showObject(a)

	// outputs: "integer!"
}