In functional programming, we have a clear definition for what a flatMap function is supposed to be. The flatMap method takes a list and a…

Introduction

Keep your code compiling during large refactorings

In this tutorial, you will create an app that uses concurrent operations to provide a responsive interface for users by using Operation and OperationQueue.

In this article we'll explore the features of unified logging system and see how you can use it to make your debugging time less painful than it has to be.

Today we are open sourcing NonEmpty, a Swift library for modeling non-empty collection types. This small
library can help make your code safer and more expressive with very little work.

Have you ever tried to create a custom reusable view which needs to have different themes? Probably quite a lot of the time I would…

Ever since Apple announced ARKit last June at its annual developer conference WWDC people have been very excited to build highly…

One of the most important aspects of any app's architecture is how data and models are dealt with. This week, let's take a look at a few different techniques that can help us make code dealing with mutable models a bit more predictable.

The physics behind spring animations, crafting animations that feel natural, and avoiding common pitfalls with UISpringTimingParameters.

An easier way to work with associated values in notifications

Recently, I was hired by Freelancer as an iOS engineer to work on their core iOS application. As a quite young, fresh, progressive…

I would like to talk about the alternative to VIPER - Clean Swift. At first glance, Clean Swift is similar to VIPER.

Let's learn how to make a fun app that can recognize a numbers counting by Donald Trump using Vision in iOS 11

View controller containment has been an essential part of UIKit ever since the early days of the iPhone. This week, let's take a look at how we can build our own container view controllers, and how doing so can help us make parts of our UI code more modular…

Check out our blog post Core Graphics, Part 2: Contextually Speaking from Big Nerd Ranch. Learn more and read it now!