O'Reilly logo

Mastering Swift 4 - Fourth Edition by Jon Hoffman

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Determining the number of items in a set

We can use the count property to determine the number of items in a set. Here is an example of how to use this method:

var mySet = Set<String>()  
mySet.insert("One")  
mySet.insert("Two")  
mySet.insert("Three")  
print("\(mySet.count) items")

When executed, this code will print the message 3 items to the console because the set contains three items.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required