Combine is a new framework by Apple introduced at WWDC 2019. The framework provides a declarative Swift API for processing values over…

In this short article we'll see how you can block and identify calls with call directory app extension.

One really interesting aspect of Swift’s overall design is how centered it is around the concept of value types. This week, let’s take a look at a few different ways in which we can make use of the semantics of value types — and how doing so could significantly…

What kind of types do you use to manage dependencies between objects in Swift? How do you keep your objects that depend on others testable? How do you prevent an addition of a method from causing changes to test code? Couplings should be loose, but how to…

Exploring iOS, SwiftUI & much more.

Learn how to design iOS app with layered architecture using Swift 5. We'll cover how Clean Architecture applies to iOS; clear up misconceptions about the so-called iOS architectures MVC, MVVM and MVP; study how to design business logic, user interface and…

Behavior<Context> is a hidden gem in the Quick testing framework. It was introduced silently in 2017 and it’s not even mentioned in the documentation! Here’s my PR which fixes that. The more I know about it the more I think this should be the way we write…

Unused images can be cleaned up using several free tools like LSUnusedResources and FengNiao. Learn how to use those tools and keep your projects clean.

Type Erasure explained through common use cases

Very often we can make a big impact on the quality of our code base by improving some of its more minor details. This week, let’s take a look at one technique for doing such local improvements, by refactoring large functions into dedicated, rule-based systems.

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During app development using SwiftUI, you can see that your views are very coupled with the data flow. Views fetch and render the data, handle user input and actions, etc. By doing so many things views become very fat and we can’t reuse them across the app.…

Xcode has supported adding your GitHub account since Xcode 9 and Bitbucket accounts since Xcode 10. I prefer to use a separate Git client, but the support for Swift packages in Xcode 11 made me want to try the integration again. I had no problem adding a…

A split view controller manages the presentation of two child view controllers in a two-column layout also called a master-detail interface. The view controller displayed in the left column is called the primary (master) view controller and the view controller…