Swift

Thinking emoji in the center, on two sides of the emoji, one option under consideration (left: flatMap, right: map + switchToLatests operators)

Combine: flatMap, map + switchToLatests (flatMapLatest) demystified

Intro Combine is a framework made by Apple designed to support us in writing code that could be way more complex if written in an imperative way. It’s often said that with great power comes great responsibility. Therefore, as developers, it’s essential for us to understand how to harness it, so it does not backfire. Today, we’re going to take a closer look 👀 at a few Combine operators, showcasing their practical application. ...

Testing SwiftData and the Query property wrapper through an example

We’re just after this year’s WWDC where we had a chance to witness the unveiling of a new persistence framework called SwiftData. Naturally, I couldn’t resist delving deeper into it. One particular topic that caught my attention was the observation of local storage using Query and its testability. SwiftData SwiftData makes it easy to persist data using declarative code. You can query and filter data using regular Swift code. And it’s designed to integrate seamlessly with SwiftUI. ...