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!

In this short post we'll create a class that will handle the keyboard on a scrollview for us and we'll do it using interface builder objects.

How PSPDFKit is smart about choosing thumbnail sizes.

What is Functional Programming and how can we use it in Swift?
Search online for any definition of functional programming and you will find many different definitions, few of which are practically helpful. I have no claim to be an expert, but as a Swift enthusiast…

One of the major changes in Swift 4.2 is a change to the calling convention. But what exactly does that mean? Why is it important and why would you want to change it?

@autoclosure attribute improves the performance, adds a convenience, but reduces the code readability

What happens when we combine Swift's conditional conformance with codability?

This post comes from this tweet shared by David Rodrigues (if you don't follow him on Twitter you should): If you have a closure that needs some internal state to be used and modified between executions of the closure you can declare your state as part of…

Nowadays there are a million apps that solve users’ needs, so it is becoming hard to create something new or be better than market…

While subclassing is not universally bad, avoiding it can in many situations leave us with simpler code that is easier to change and reuse. This week, let's take a look at a few different techniques that can help us write subclass-free view controllers, and…

Here's another article of the serie "The easiest ". Previous one on Core Data here -> The easiest Core Data. Swift 5 will most likely include async/await, which will be a revolution for handling concurrency at language level. See Chris Lattner's proposal…

Daniel Tull is a freelance software developer in Exeter, UK.

Getting Started This article is a quick introduction to how to use the Metal, MetalKit, and Model I/O frameworks in Swift. If you know your way around UIKit or Cocoa development, you should be able…

Last few months I was working on implementing Accessibility support for my app. During this years WWDC I’ve visited all Accessibility…

Being able to use unit testing in a productive way often requires the various parts of an app to be written with testability in mind, which isn't always the case. This week, let's take a look at a few different refactoring techniques that can help us make…

fastlane comes bundled with a tool that makes taking screenshots simple. In this article we'll go over setting up your project to use fastlane snapshot.

This year’s WWDC had a great talk on designing fluid interfaces. My main takeaway from this talk was how important gesture driven…