DAY 16


Dennis Ritchie, the inventor of the C programming language and co-inventor of UNIX, once said “the only way to learn a new programming language is by writing programs in it.”

He was right, of course. You’ve spent the last 15 days learning and reviewing the fundamentals of the Swift programming language, but now it’s time to put everything you’ve learned into practice by building real iOS projects in Swift.

As you’ll see, building an app is like standing on the shoulders of giants – Apple’s UIKit framework gives us an incredible user interface to work with, so if you bring the Swift skills and they bring the development platform the only thing between you and a great App Store income is a killer idea.

I can’t help with the idea, but I can teach you to build apps. So, from here on you’ll be putting your knowledge into practice.

Today you have three topics to work through, and you’ll meet view controllers, storyboards, and the FileManager class. As you progress through the projects in this series the pace will quicken, but for now we’re taking things slow so you have time to get comfortable.

Need help? Tweet me @twostraws!


The 100 Days of Swift is a free collection of videos, tutorials, tests, and more to help you learn Swift faster. Click here to learn more, or watch the video below.

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