This tutorial belongs to the Swift series
Suppose you have an array in Swift, like this:
var items = 1...3
and you want to shuffle it, so that you get its items in random order.
There are 2 ways to do that in Swift.
One way is mutating the original array, and it's using the shuffle() method that shuffles the items in the array:
items.shuffle()
Note that I used var because an array is a struct, and if I declare it as let then it's immutable, and you will get an error.
Another way is not mutating the original array, but it's returning a new array, and it's using the shuffled() method:
let items = 1...3
let shuffledItems = items.shuffled()
Note that here I am safe to use let to declare my variables because shuffled() does not mutate the original array.