Go to https://squarespace.com/seanallen to save 10% off your first purchase of a website or domain using code SEANALLEN. The Singleton design pattern in iOS development has a bad reputation. Many developers say to never use a Singleton, but I don't agree. A Singleton is a tool that can be used correctly or poorly. In this video you will learn what a Singleton is, the pros and cons of using them and how to create a Singleton. My iOS Dev Courses: https://seanallen.teachable.com/ iOS Developer Interview Questions Playlist:    • Swift Interview Tips   Twitter: Sean Allen - https://twitter.com/seanallen_dev Hired.com: https://hired.com/x/1n01g Book and learning recommendations that help out the channel if you decide to purchase (Affiliate Links): Paul Hudson's Hacking With Swift: https://gumroad.com/a/762098803 Donny Wals - Combine: https://gumroad.com/a/909014131 Mark Moeyken’s SwiftUI Books: www.bigmountainstudio.com/swiftui-views-book/fzc51 Objc.io Books (Thinking in SwiftUI & Advanced Swift): https://gumroad.com/a/656585843 #swift #softwaredeveloper #iosdeveloper Timestamps: 0:00 - Is it really that bad? 0:17 - Example w/ UserDefaults 1:31 - Pros 2:16 - Cons 4:21 - How to create a Singleton 5:33 - It's a Hammer