Junior — Senior
What is the output of program №9
livecode
Task condition
This task involves a small snippet of Swift code. It creates a set of strings, to which several names are added sequentially, some of which are repeated. After all insertions, the number of elements in the set is printed. The question is to determine what number will be printed.
import UIKit
var uniqueNames = Set<String>()
uniqueNames.insert("Boris")
uniqueNames.insert("Andrey")
uniqueNames.insert("Boris")
uniqueNames.insert("Arthur")
uniqueNames.insert("Boris")
print(uniqueNames.count)