I’ll also send you future posts on leveling up your architecture. When you subscribe to my list below, you’ll receive the templates in your inbox and updates. You can generate the Clean Swift components with just Xcode’s New File command. In order to make it even easier for you to get started, I created a set of Xcode templates. That’s how you know exactly where to look when you look back at your code 3 months later. You just follow a simple system and your code just logically falls into place. And you don’t need to learn any testing or mocking frameworks. What if you know exactly which file to open and which method to look? How much more productive can you be? Imagine your tests run in seconds instead of minutes or hours. Apply what you learn to new and existing projects of any size.Have confidence in your tests to catch regression.Write fast and maintainable unit tests.Build reusable components with workers and service objects.Extract business logic from view controllers into interactors.Decouple class dependencies with established boundaries.Write shorter methods with single responsibility.Change existing behaviors with confidence.After reading this post, you’ll learn how to: In order to help you today, I want to focus on how to apply Uncle Bob’s Clean Architecture to iOS development using Swift. I’ll write more about these topics in future posts. I’ve also experimented with different testing and mocking frameworks. I’ve researched on various iOS architectures out there such as MVC, MVVM, ReactiveCocoa, and VIPER. If your codebase has a shaky architecture, it’ll eat you alive. If a building has a shaky foundation, it eventually topples. Is it really possible to write factored code and never have to refactor?Įnter architecture. Nonetheless, refactoring and testing are generating all the buzz these days. I want to find out why we are still battling massive view controllers. You are treating the symptoms, not attacking the root cause.Ĭan we prevent the damage in the first place, instead of treating the wounds afterward? Why does it have a “re” in refactoring? Can we just write factored code from the start so we never have to refactor? The Root CauseĪbout 2 years ago, I decided to do something serious about it. You are just putting bandages on your wounds. So far, the things you read and tried are what I call the first aid kit. Swift hits 2.0 and iOS 9 is released next month. How that is supposed to help you write unit tests.īut you are still not doing it. You read a lot about design patterns and how to refactor your view controllers. If this sounds familiar to you, you may have already attempted to fix the situation. Thanks to Massive View Controller.įailed Attempt at Solving the MVC Problem This same vicious cycle happens every time you need to fix a bug or add a new feature. Because there is no unit tests to prevent regression. While doing all of these, you fear you may break something else. Make a change to see how it behaves differently. Trace through various conditionals and loops. Navigate through 50 classes, protocols, and methods. If only they had asked me to do that 2 months ago while the code was still fresh, it would have taken less time.
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