THE RIGHT WAY TO WRITE A SINGLETON July 17, 2015 by Hector Matos Even though I've written about the woes of managing state in my previous post, sometimes there's just no way we can avoid it. One example of managing state is something we're all quite acquainted with - The Singleton. The problem we find in Swift is that there are SEVERAL ways of implementing them. But which way is the right way? In this post I'm going to show you the history of the singleton and then show you the right way to implement the singleton in Swift. If you want to see the right way to implement the singleton pattern in Swift along with proof of it's "right-ness", you can scroll to the bottom of the post and see it there. :) A TRIP DOWN MEMORY LANE Swift is a natural evolution of Objective-C. In Objective-C, this is how we implemented the singleton: @interface Kraken : NSObject @end @implementation Kraken + ( instancetype ) sharedInstance { ...
