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Latest Articles

8 Common SwiftUI Mistakes - and how to fix them
TIPS

8 Common SwiftUI Mistakes - and how to fix them

SwiftUI is a big and complex framework, and although it’s great fun to work with there’s also a lot of scope for making mistakes. In this article I’m going to walk through eight common mistakes SwiftUI learners make, and how to fix them.

Continue reading…

Hacking with Swift Live 2020 raises $38,000 for charity
NEWS

Hacking with Swift Live 2020 raises $38,000 for charity

Hacking with Swift Live 2020 just finished, delivering four days of packed tutorials and workshops walking through all the major new features for SwiftUI, UIKit, and more. Even better, because all our profits go to charity we were able to donate $38,000 to an incredible cause – folks made friends, learned lots of new Swift skills, and made a difference to the wider world.

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WWDC20: Wrap up and recommended talks
COMMUNITY

WWDC20: Wrap up and recommended talks

WWDC20 was a packed event as always, with some incredible steps forward for macOS, SwiftUI, and more. Was it better than the regular event? Yes. Will it go back to how it was before? That’s harder to say.

Continue reading…

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Latest Example Code

uikit
Availability: iOS 3.2+

How to create custom text input using UIKeyInput

uikit
Availability: iOS 13.4+

How to detect keyboard input using pressesBegan() and pressesEnded()

system
Availability: iOS 12.0+

How to group user notifications using threadIdentifier and summaryArgument

system
Availability: iOS 2.0+

How to convert dates and times to a string using DateFormatter

system
Availability: iOS 2.0+

How to make one operation wait for another to complete using addDependency()

system
Availability: iOS 8.0+

How to convert between camel case and snake case with Codable and keyEncodingStrategy

networking
Availability: iOS 11.0+

How to make a network request wait for an internet connection using waitsForConnectivity

uikit
Availability: iOS 8.0+

What’s the difference between leading, trailing, left, and right anchors?

xcode
Availability: iOS 13.0+

How to set the clock in the iOS Simulator

system
Availability: iOS 8.0+

How to check whether one date is similar to another

testing
Availability: iOS 13.0+

How to benchmark app launch time using XCTOSSignpostMetric.applicationLaunch

core-haptics
Availability: iOS 13.0+

How to detect whether haptic event playback is supported

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Learn the smart way

Hacking with Swift builds on extensive research into learning and memory, to help you learn app development faster and more thoroughly.

Spaced Repetition

Our courses cover the important topics of app development, and repeat them at spaced intervals to help them sink into your long-term memory.

Interactive Review

We have thousands of questions and challenges to test your knowledge at every point along the way, ensuring you can apply what you've learned.

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It's not enough just to follow tutorials, which is why we get you writing your own apps as fast as possible – all with careful guidance and support.

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The vast amount of free content on Hacking with Swift is supported through the sale of books and courses that teach a wide range of more advanced topics. So, when you're ready to take your skills further check out the books below – and thank you for your support!

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Swift moves fast, and with our lifetime free Swift update policy you get updates for the books you purchase at no cost, protecting your investment.

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Our books have a 30-day No Questions Asked refund policy. Not learning fast enough? Did life take a different turn? Bought the wrong thing? No problem!

HACKING WITH SWIFT+ My subscription service delivers incredible, hands-on Swift tutorials as both video and article, so you can deepen your understanding of Swift, SwiftUI, UIKit, and more.
Level: Beginner-Advanced
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HACKING WITH iOS Start learning Swift 5.2 with either UIKit or SwiftUI, with exclusive extra content available in the download edition.
Level: Beginner – Intermediate
Read for free Buy Download
SWIFT IN SIXTY SECONDS Want to get started with Swift, but find yourself short on time? This course teaches you the fundamentals of Swift programming in 60-second chunks.
Level: Beginner
Read for free Buy Download
UNDERSTANDING SWIFT Many of my books teach you how to build things with Swift, but this one aims to teach the why of Swift – why it works the way it does, and why each language feature matters.
Level: Beginner
Read for free Buy Download
PRO SWIFT Watch advanced videos that will level up your Swift knowledge: functional programming, protocol-oriented programming, value types, closures, operator overloading, and more.
Level: Intermediate - Advanced
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SWIFT DESIGN PATTERNS Learn smart, idiomatic techniques to design great Swift apps, from using MVC effectively through to MVVM, delegation, protocols, and more.
Level: Intermediate - Advanced
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TESTING SWIFT If you're serious about writing great code, you need to be serious about writing great tests. Testing Swift is designed to guide you through unit tests, UI tests, TDD, and much more!
Level: Intermediate
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SWIFTUI BY EXAMPLE The ultimate problem solving guide provides over 400 pages of hands-on solutions for SwiftUI developers.
Level: Beginner – Intermediate
Read for free Buy Download
SWIFT CODING CHALLENGES Work through real Swift coding problems that help strengthen your skills – perfect for finding and filling holes in your Swift knowledge, and preparing for iOS interviews.
Level: Intermediate - Advanced
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ADVANCED iOS: VOLUME ONE Build awesome, real-world projects using APIs introduced in iOS 10, and learn about speech transcription, SiriKit, iMessage apps, the new rich media notifications, and more.
Level: Intermediate - Advanced
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ADVANCED iOS: VOLUME TWO Build powerful real-world projects using powerful technologies like Core ML, ARKit, PDFKit, drag and drop, Core NFC, and more.
Level: Intermediate - Advanced
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ADVANCED iOS: VOLUME THREE Build powerful real-world projects using Create ML, Siri shortcuts, sentiment analysis, and more.
Level: Intermediate - Advanced
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SWIFT ON SUNDAYS: VOLUME ONE Practice building complete apps from scratch with 20 complete walkthrough projects for iOS, macOS, watchOS, and more.
Level: Intermediate
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DIVE INTO SPRITEKIT Learn to build high-performance games for iPad with a unique twist: you get to choose what should happen in each game. It's your game – you decide!
Level: Beginner
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HACKING WITH macOS Power up your desktop by learning to build macOS apps – I'll teach you everything you need to know, while helping you build real-world projects that take full advantage of macOS.
Level: Beginner – Intermediate
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HACKING WITH watchOS Build powerful, useful apps for Apple's tiniest devices – this book gives you everything you need to make great apps that quite literally never leave your user's side.
Level: Beginner – Intermediate
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HACKING WITH tvOS Build for the biggest screen of all – take full advantage of the Siri remote and build incredible apps and games using UIKit, SpriteKit, and more!
Level: Beginner – Intermediate
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SERVER-SIDE SWIFT Transfer your Swift skills to the server and learn to build awesome web apps, APIs, and websites all using Swift.
Level: Beginner - Intermediate
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OBJECTIVE-C FOR SWIFT DEVELOPERS Round out your iOS coding knowledge with Apple's original language – this whole book has been designed to teach you Objective-C as quickly as possible by building on your Swift skills.
Level: Advanced
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BEYOND CODE Learn the meta skills you need to be a better coder: regular expressions, Unix command line tools, Git source control, Scrum project management, and more.
Level: Beginner
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VIDEOS Buy recordings of online video workshops that teach specific advanced topics, all in 1080p high definition – it's an incredibly convenient way to learn.
Level: Intermediate – Advanced
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MERCHANDISE Buy some Swift-themed gifts for yourself or your favorite programmer friend and you'll learn Swift faster. Probably.
Level: All
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Marc Aupont

“The projects in this course are created in a way to expose you to real-world code – very practical and extensible! Highly recommended.”

★★★★★

Marc Aupont on Hacking with Swift

Anton Novoselov

“Just finished reading Swift Design Patterns. It's awesome, just like other books by Paul. It helped me a lot to understand some iOS aspects deeply.”

★★★★★

Anton Novoselov on Swift Design Patterns

Mario Esposito

“Paul's is a warranty of quality. He writes books at a speed that always surprises me for its timing and effectiveness. This book represents all that!”

★★★★★

Mario Esposito on Hacking with watchOS

Julio Ryuuzaki

“I'm a huge fan of Paul Hudson – more than an in-depth source of technical information, its super easy to understand and learning from him is inspiring!”

★★★★★

Julio Ryuuzaki on Hacking with macOS

John Gallaugher

“Paul Hudson is a Swift community treasure. I regularly turn to Pro Swift and Paul's other books for reference and inspiration. Thank you!”

★★★★★

John Gallaugher on Pro Swift

Caleb Basinger

“I love the work Paul does. He has a real talent for making complex topics obtainable, fun, and engaging!”

★★★★★

Caleb Basinger on Hacking with Swift

Dan O’Leary

“The entire Hacking with Swift series is great! Swift Coding Challenges forces me to think abstractly and dig into the code more than ever.”

★★★★★

Dan O’Leary on Swift Coding Challenges

Jimmy McDermott

“Paul's book does an amazing job teaching beginners how to use server-side Swift in an effective, testable, efficient way.”

★★★★★

Jimmy McDermott on Server-Side Swift

Zach Fuller

“Everything that you need, nothing that you don't. Paul does a great job of explaining even the most advanced concepts in an easy to understand manner.”

★★★★★

Zach Fuller on Pro Swift

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Hello, my name is Paul and I think Swift is awesome.

About Me

My name is Paul Hudson, and I wrote Hacking with Swift to help you learn to make apps for iOS, macOS, watchOS, and more.

On this site you can find my free Swift tutorials, lots of other awesome Swift books I wrote, a huge collection of Swift example code, plus Swift news, tips, and tutorials to help take your learning further.

I've already helped thousands of people to learn Swift coding, and I'd love to help you too. Feel free to get in touch if you have questions – you can email me at paul@hackingwithswift.com or tweet me @twostraws.

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