Start thinking in auto layout constraints!
Update note: This tutorial was updated to Swift and iOS8 by Brad Johnson. Original post by tutorial team member Matthijs Hollemans.

NSRegularExpression tutorial and cheat sheet!
Update note: This tutorial was updated to iOS 8 and Swift by James Frost. Original post by Tutorial Team member Soheil Azarpour.

Start thinking in auto layout constraints!
Update note: This tutorial was updated to Swift and iOS8 by Brad Johnson. Original post by tutorial team member Matthijs Hollemans.

Ray Wenderlich:

"The Tutorial Team and I have been digging in already, and are quite excited about what we’ve seen so far.

We’re already hard at work preparing some tutorials on WatchKit (stay tuned!), but to tide you over in the meantime, I wanted to share my initial impressions.

Note that I’m not quite sure what the NDA restrictions are yet, so for now I’m basing this solely on materials available to the public from Apple’s WatchKit page.

Let’s dig in!"

Learn about concurrency in this Grand Central Dispatch in-depth tutorial series.
Update note: This tutorial was updated for iOS 8 and Swift by Bjørn Ruud. Original post by Tutorial Team member Derek Selander.

Learn about concurrency in this Grand Central Dispatch in-depth tutorial series.
Update note: This tutorial was updated for iOS 8 and Swift by Bjørn Ruud. Original post by Tutorial Team member Derek Selander.

Give your players the power to build their own Kookie Kiosk by implementing a waiting game.
Note from Ray: This is a brand new Swift tutorial released as part of the iOS 8 Feast. Enjoy!

Here’s a library allowing you to easily use Touch ID to for app authentication called EHFAuthenticator from Christopher Truman of eHarmony.

Learn how to make your apps use Adaptive Layout in iOS 8!
Note from Ray: This is an abbreviated version of a chapter from iOS 8 by Tutorials released as part of the iOS 8 Feast to give you a sneak peek of what’s inside the book

Did you know that UIAlertView and UIActionSheet (as well as their respective delegate protocols) are deprecated in iOS 8?
It's true. ⌘-click on UIAlertView or UIActionSheet in your code, and check out the top-level comment:
UIAlertView is deprecated.

Learn how to create a today extension in iOS 8!
Note from Ray: This is an abbreviated version of a chapter from iOS 8 by Tutorials released as part of the iOS 8 Feast to give you a sneak peek of what’s inside the book.

Learn how to blur views and add vibrant text in iOS 8!
Note from Ray: This is an abbreviated version of a chapter from iOS 8 by Tutorials released as part of the iOS 8 Feast to give you a sneak peek of what’s inside the book.