Sets in Swift Simplified

Sets are there to store different unordered values. Unlike arrays that can store a bunch of duplicate and ordered ones.

Sets only allow storing types that conform to Hashable protocol such as the basic Swift types.

The point is if you are aiming to store a collection of distinct values of type hashable not caring about its order the answer is a set. Thus, let’s stop babbling around, and get our hands dirty with some code.

creating a Set of Type Int :

let’s insert some value:

add more values to try it yourself.

count our set by using:

Now, removing an element or removing all elements by using these simple two lines:

For now, let’s see if our set is empty:

and check if the set has a specific value:

As you saw it is very simple to interact and play around with a set.

What about basic set operations such as Union, subtracting, and intersection?
Here is your answer:

That’s it for this article. I hope you have learned something new today. See you in the next one.