はてなブックマーク

The iOS Developer Community Survey shows that Model-View-ViewModel (MVVM) is the second most popular architectural pattern for designing iOS apps. It makes a good reason to study the state of modern MVVM with SwiftUI and Combine. In this article we’ll cover: The purpose of MVVM. The components of the MVVM pattern. The flow of data and dependencies in MVVM. Why should we use unidirectional data flo

The functional reactive features of the Swift Combine framework, that contribute to the control flow of your program, are deeply nested inside the framework implementation and often result in non-sequential execution of our code. Therefore, the traditional debugging practices, like setting breakpoints manually and examining stack traces, are often of no help when tracing Combine code. In this arti

Memory management is the core concept in any programming language. Although there are plenty of tutorials that explain the basic principles of Swift automatic reference counting, I have found none that would explain it from the compiler perspective. In this article we’ll learn what’s beyond the basics of iOS memory management, reference counting and object life cycle. Let’s begin with the fundamen