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- Too DRY – When Don’t Repeat Yourself goes wrong
Component-based frontend frameworks like React support the DRY principle: Don’t Repeat Yourself. Following the DRY principle is an excellent way to eliminate code duplication. But unfortunately, sometimes, developers overdo it. And that leads to strange hard-to-debug behavior and code that […] - useEffect – How to test React Effect Hooks
The useEffect hook is probably one of the more confusing React hooks. At first, we wonder when to use it, then we struggle to understand how to use it, and eventually, the guilt kicks in, and we ask how to […] - How to find a developer job – like a computer scientist
The job hunt can be a very frustrating experience. First, we are overwhelmed by all the possible things we need to do. And then we get stuck. Then demotivated. And sometimes even depressed. The good news: It doesn’t have to […] - How to build UI components like a Pro [Part 2]
In Part 1 of this article series, we used a Test-first approach to develop a Light component that can be switched on and off again. And we utilized the Accessibility (a11y) API to interact with the component in our tests. […] - How to build UI components like a Pro [Part 1]
Software engineering is about writing code that works. But how do we actually know that our code works? Well, we have to test it. Take web apps, for instance. I often see developers implementing new components while the app is […] - My worst software bug ever
Let me tell you about one of the worst bugs I’ve produced (so far) in my career as a software engineer. I remember it as if it was yesterday. Back in 2012, I was working for a company that runs […] - Unit vs. Integration vs. Acceptance Test
Have you ever been part of a team meeting, and the conversation moved towards Unit Testing and writing some Integration Tests here and some Acceptance Tests there? And did you feel like you were the only person in the room […] - The Story of the Invisible Junior Developer
What framework or technology to learn next? Today, I want to share 5 rules to guide you during your first years as junior developer. - Behind the scenes of filter, map & reduce
Today, I want to show you, how you can solve coding challenges faster, with more confidence, and with less code. - How linting can set you apart from the competition
A tutorial on how to measure the complexity of your code in order to find code sections that need improvement.