In this article you will learn how to treat index out of range exception in Swift arrays and other collections.

Designed to be an easy way to quickly prototype Swift code, to learn the language, or to explore the standard library and Apple’s SDKs — Swift playgrounds have become an integral part of many developers’ daily workflows. This week, let’s take a look at some…

Learn everything you need to know about Swift mocking protocols, in addition to dummies, stubs, and fakes.

The typical audio environment for HomePod has many challenges — echo, reverberation, and noise. Unlike Siri on iPhone, which operates close…

A collection view layout capable of laying out views in vertically scrolling grids and lists. - airbnb/MagazineLayout

Say, for whatever reason, you were in desperate need of Bill the Cat ASCII art in your app. Maybe you were very drunk and had a bet. Maybe you were working with some kind of Unix awk client. I dunn…

A cheat sheet for cheat sheets! An overview of cheat sheets for Xcode, Swift and GIT to use as a quick reference and speed up your development.

You followed a tutorial to create a simple table view, you managed to create a custom cell with some labels and images, it seems to go well. But as soon as you scroll it, you noticed something is wrong. When you tap on a cell and scroll it, the cells

TL;DR Jump to how to set launch arguments / environment variables If you have programmed in platform outside of iOS like Ruby , Python, Java etc, you might have used environment variable to store secrets. There's environment variable in iOS as well, these…

A quick guide to writing user interface tests with Xcode.

Memory leaks are a common problem when writing iOS applications, and while we all know we should be on the lookout for them, it’s often too easy to miss a vital weak reference. By leveraging integration testing, we can catch these issues and spend more time…

Create a QR code Core Image in Swift by applying multiple Core Image filters to adjust the color and combine the QR code with your own logo.

In this tutorial, you’ll learn about requesting app ratings and reviews in your iOS applications using SKStoreReviewController and other available APIs.

This week, let's take a look at a way of writing networking code that utilizes Apple's built-in URLSession API, while augmenting it using Futures & Promises, as well as several functional programming concepts.