swapping

swapping

Node.js

let a = 'foo'
let b = 'bar'

console.log(a, b);

[b, a] = [a, b]

console.log(a, b)

Output

foo bar
bar foo

Go

package main

import "fmt"

func main() {
    a := "foo"
    b := "bar"

    fmt.Println(a, b)

    b, a = a, b

    fmt.Println(a, b)
}

Output

foo bar
bar foo