The hidden information your README.md can reveal about your team

How much we care about knowledge transfer   I think this is the most obvious point, but also not one that’s very specific to a readme file. There are many other tools for knowledge transfer like company wikis, emails and Slack. Still the presence and content of a readme can tell you how much your […]

Modern Swift Unit Testing

What Is Swift Testing?   Swift Testing is Apple’s new, standalone testing framework introduced at WWDC 2024 and shipped with Xcode 16. It’s available without manually adding any dependencies.   Unlike the traditional XCTest, which traces its roots back to ObjC, Swift Testing is built entirely in Swift and leverages language features such as macros, […]

Kotlin + Spring Boot: A Match Made for Modern Microservices

How integration between Kotlin and Spring worked in the past?   At the beginning of their integration, Kotlin and Spring boot integration faced a quite a number of challenges: Nullability gap – Integrating Kotlin and Java libraries, like the ones from the Spring ecosystem, resulted in problems with nullability. Before null-safety annotations were added to […]

Suspension not detention: launching activities without callback headaches

There’s a solution for that: wrapping activity launch code in suspending functions. That dramatically increases readability and maintainability of your code. Let me show you!   How it looks   In my opinion, business logic in code should be so simple, non-developers can (almost) read it:   suspend fun runTakePictureFlow() {     if (!permissionManager.check(CAMERA)) {        if […]

Property Drilling: when best practices become best problems in Declarative UI (Compose, Swift UI)

What is property drilling?   So to start with, look at that small piece of code:   fun Screen(viewModel: ViewModel) {   Text(text = viewModel.title)   Text(text = viewModel.description)   viewModel.entries.forEach { entry ->       Row(onClick = { viewModel.onEntryClick(entry) }) {           Text(text = entry.title)           Text(text = entry.description)           Button(onClick = { viewModel.onDeleteEntryClick(entry) })       }   } }   This is indeed […]

Enhancing deployments with autonomous reconcilers

To understand this article and the underlying concepts, let me briefly explain the most important cornerstones of our development environment and infrastructure.   Environment   We are currently using a single-stage kubernetes environment – called stable – to deploy all of our applications. We basically follow a microservice approach. Therefore, every application might depend on […]

The struggle with breaking tests and hard to change code: Test API to the rescue!

TL;DR: Create a test API: by comparatively small effort you can create a test API that abstracts away technical implementation details so your tests are easier to understand and change. As the coupling between the test and production code becomes less, you’ll notice that production code becomes way easier to change. This is a boost […]