Most apps written for any of Apple’s platforms rely on APIs that are singleton based. From UIScreen to UIApplication to NSDate, static APIs are everywhere in Foundation, UIKit & AppKit. In this post I give 3 easy steps to easily test code that uses such APIs.

Dependency injection is a great technique for decoupling code and making it easier to test. In this blog post I take a look at how functions can be used for simple dependency injection.

After diving into one of our largest Swift projects at Hyper, I managed to reduce the average build time for a clean build by 20%. This blog post is detailing how I did it.

How to use custom, lazily evaluated sequences in Swift to improve performance and enable you to deal with larger datasets, such as entries in a database.

How type erasure can be implemented using closures, and how it can help you work around using protocols with self or associated type requirements.

I’d like to share a technique that I’ve come to find quite useful when using Swift’s do, try, catch error handling model — to limit the amount of errors that can be thrown from a given API call.