Programming in Swift: Fundamentals

Hey everyone! I’m Chris, and welcome to the fourth section of this course, More Collections. You learned about some basic collections in the second part of this course - those were tuples, and arrays. And while those collections are useful, sometimes you need some more powerful ways to store and work with collections of data. That leads you to the next two collection types in this course: dictionaries and sets!

You’ll start by learning how dictionaries work, what a key-value pair is, some of the neat features of dictionaries, and how to iterate over dictionaries with a loop. Those loops are handy, aren’t they?

Then you’ll learn about another powerful collection in Swift: the Set. Sets are a little like arrays, and a little like dictionaries, but Sets are most useful when you’re comparing two or more Sets for similarities and differences.

And as always, I’ll have a few challenges for you along the way to help you check your knowledge and give you a chance to show off what you know!

Let’s get started, so head straight into the next video and I’ll see you there!