Tour of Go 2.0

Multiple results

Go functions can return multiple values — no need to wrap them in a struct or use output parameters. You’ll use this constantly, especially for returning a result alongside an error.

Here, swap returns two strings and the caller unpacks them directly.

main.go ▶ Run in Playground 
package main

import "fmt"

func swap(x, y string) (string, string) {
	return y, x
}

func main() {
	a, b := swap("hello", "world")
	fmt.Println(a, b)
}