When Apple announced Swift 2 at the WWDC in 2015, they also declared that Swift was the world’s fist protocol oriented programming language. However protocols have been present in Java and Objective-C since many years. So why is Swift different? And what does protocol-oriented… Continue Reading
This Week I’ve been asked to do a code review, to determine the overall health of a existing App code base. Unlike a code walkthrough, where someone familiar with the code shows the main components, this is a code review where… Continue Reading
Today I wonder how simple and elegant I was able to implement the command pattern with Swift 2. I started as usual with a bunch of classes until I realised that Swift closures provide exactly what is needed to implement the command objects.… Continue Reading
App Transport Security (ATS) enforces best practices in the secure connections between an app and its back end. ATS prevents accidental disclosure, provides secure default behavior, and is easy to adopt; it is also on by default in iOS 9… Continue Reading
Today I tried to explain my 6 years old daughter what programming means and what an algorithm does. I encountered scratchjr and was impressed how fast she “wrote” her first program on the ipad. Even if you’re not part of the Kindergarten… Continue Reading
With Adaptive Layout you are able to conditionally install Auto Layout constraints or views. Since iOS8 it is easier than ever to write universal apps for iPhone and iPad devices. Overriding the size class can be an incredibly useful tool in… Continue Reading
Before iOS 7, we had to use either the rowHeight property on UITableView, or the tableView(_:, heightForRowAtIndexPath:) delegate method to specify the height of a table view cell; to make matters worse, we often needed complex calculations to determine the height of… Continue Reading
Apple introduced the concept of adaptive user interfaces in iOS 8 relying on a combination of Auto Layout and size classes. Building user interfaces that adapt to changes in size class became even more important when Apple added slide over… Continue Reading
When your code smells it is often not awful code that makes your hold your nose. Rather it’s a simple indication that something may need to be changed. However when you don’t change and ignore you probably will end with a… Continue Reading
Since the introduction of Swift, our behavior towards nil values have greatly changed. Swift brings type safety, and also works hard to prevent sending messages to nil by introducing Optionals. Optionals force you to write guards around your optional code at… Continue Reading