Thanks to SE-0228, you can control exactly how you want string interpolations to print. Thank you Brent for giving this to us. It’s a doozy! Let me share some examples. Consider printing opti…

In this article we'll get you started with memory graph debugging and show you some of the cool features of this great tool.

I’ll explore how to apply the power of RxSwift, a reactive framework, to make animation code look much cleaner, and easier to read. My client wanted a story told through a sequence of animations rather than by playing a pre-rendered video, and with RxSwift…

Optimize your workflow in Xcode with optimized behaviors to quickly navigate to relevant navigators and keep yourself in your development flow.

A look at how we generate our screenshots for the iOS App Store.

One of the very intriguing sessions carried out by some of Apple’s finest debugging engineers during 2018’s WWDC was Advanced Debugging…

In the first part of this three parts tutorial, we’ve covered how to utilize Xcode breakpoints to manipulate an existing property value…

Using plain functions to compose views

When using syntactic sugar, what we ideally want is to be able to strike a nice balance between low verbosity and clarity, and this week, let’s take a look at a few different ways that type aliases can enable us to do just that.

Give your docs an upgrade

In this tutorial, I’ll try to develop an image classifier iOS app to see how I can use Apple’s ML tools to detect pediatric pneumonia.

When Xcode runs your unit tests, it uses the App as a host for the tests. The tests only run after the App has finished launching. Loading core data, networking or other setup work you do from the App delegate slows down your unit tests. Here’s a quick tip…

When writing automated tests, many of us have a tendency to focus on verifying that our code behaves correctly under ideal conditions, but we should really also test how our code behaves when something goes wrong. This week, let’s take a look at how unit…

Learn how to create a voice recording app, that has audio visualization as well as a record button just like Apple’s Voice Memos app.

A little extra clarity goes a long way

Concurrent code can come in many different shapes and forms. Depending on what we’re trying to achieve, the abstraction that’ll prove to be the best fit might vary quite a lot from use case to use case. One such abstraction is Tasks, and this week, let’s…

Strings are everywhere. We all use strings everyday. In Swift `String` is a very powerful type. One of the features it had available since the beginning is the string interpolation. With it we can embed any Swift expression inside the string literal instead…

The release of Swift 5 is coming with Xcode 10.2 and brings some updates to the String API in the standard library. Here’s a look at the new character properties that allow you to test for a number of useful Unicode properties.