We can remove a single item or all the items in a set. To remove a single item, we would use the remove(_:) method and, to remove all the items, we would use the removeAll() method. The following example shows how to remove items from a set:
//The remove method will return and remove an item from a set var item = mySet.remove("Two") //The removeAll method will remove all items from a set mySet.removeAll()