![]() Segues: How to Use Them While Saving Lines of Code Watch Saul Mora’s AltConf presentation “Object-Oriented Functional Programming: The Best of Both Worlds!” to learn more about real world use of bind and other functional concepts in object-oriented programming. In “What’s New in Storyboards” of WWDC 2015, we’re presented with implementations of unwind segues. Separate Read Model from Write Model to Support Complex Forms The sample code was very straight to the point: Now I’ve stated part of my concerns with segues and app architecture already. One thing that repeatedly messes up the conceptual purity of a view model is figuring out which entity should be mutated upon user interaction. Part of this purity stems from the fact that a view model is best served as view data to stress that it doesn’t contain much (business) logic. I OS View Architectures and VIPER Explained Making the data mutable introduces a lot of problems figuring out what that view model really is. One of the commenters nailed it: any MV* variant focuses on architecting view components.There’s an excellent overview of MVC, MVP, MVVM, and VIPER in i OS with sample codes by Bohdan Orlov of Badoo I recommend you read. Only VIPER takes the application as a whole into account. A UIViewController belongs into the user interface layer and is, in fact, a composite view itself.MVC by itself is an architectural pattern, but not an approach to app architecture in itself. That’s confusing at first because of the name. This insight will liberate you from thinking that a view controller is sufficient to glue data to UIKit components. ![]() There’s room for a whole application between these two. In that way Bohdan’s sample code is more east-oriented and cleaner than what you’d usually find on the topic: It takes VIPER’s heritage of Clean Architecture and Hexagonal into account and defines the Interactor through an output port. Usually, you’d model provideGreetingData() as a function that returns the data to the caller. This will cause trouble in async processes of course. You see in the full example that the amount of types seem to explode. Don’t be afraid of that as long as you can assign each type a specific responsibility. Then it won’t turn into the mess everyone seems to be afraid of. Check out Unite 4.Having used VIPER in apps myself, I see a problem with the names, though. Stop going to web pages to get your work done. ![]() It also lets you take a “slice” of a website and put it in your Dock for quick reference.īest of all, MacSparky readers are getting 20% off this week. Unite 4 goes a step further with the ability to put these apps in your status bar (which, by the way, is an excellent place for Slack) and create floating windows. But you can also make entertainment apps like Netflix, YouTube, and Disney+. Of course, people use Unite 4 for productivity apps like Gmail, Hey, Slack, Basecamp, and every other web-based productivity app. It even creates an attractive Mac-friendly icon. You type in a URL, and you get a Mac app. Unite 4 takes a website and turns it into an app. Moreover, they often don’t follow conventional macOS standards. Some of them are Electron-based and use up your Mac’s resources. When you want to jump straight to the tool, there is no easy way. When you close your browser, you are closing your tools. These days, many of us are using web services that require us to navigate a website to interact with them. This week MacSparky is sponsored by Unite 4, the best app for turning websites into apps.
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