In Swift, you can use the Set type to get unique elements of an array. A set is an unordered collection of distinct hashable values. You can simply create a Set from your array, which automatically removes duplicates, and then convert the Set back to an array if you need to.
Here's an example:
let numbers = [1, 2, 3, 2, 4, 5, 1]
let uniqueNumbers = Array(Set(numbers)) // [1, 2, 3, 4, 5]
In this example, we first define an array numbers with some duplicate elements. Then we create a Set from numbers by initializing a new Set with the array's elements. This creates a Set with only the unique elements from the array. Finally, we convert the Set back to an array using the Array initializer. The resulting uniqueNumbers array contains only the unique elements from the original numbers array, in the same order as they appeared in the original array.