add.go2

package main

import "fmt"

type addable interface {
	type int, string
}

func add(type T addable)(x, y T) T {
	return x + y
}

func main() {
	fmt.Printf("%d + %d = %d\n", 1, 1, add(1, 1)) // 1 + 1 = 2
	fmt.Printf(`"%s" + "%s" = "%s"` + "\n", "1", "1", add("1", "1")) // "1" + "1" = "11"
}