We saw other data structures in previous SKB like
Let's look at
Did you notice that
Set cannot contain duplicate values? A
Set is a list of unique values.
When you combine the two
Set, it removes the duplicated values and only keep one of each.
One thing to know is that
Set do not guarantee consistant ordering. You should not rely on index of the elements. If you want to learn more, you can read this great answer on Stackoverflow.
Last thing about
Set is that it has all the same function as
List such as