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ConstraintLayout 1.0

What happened since the first release of ConstraintLayout? Has it changed for the better or the worse? These and similar questions will be addressed below: Introduction It’s been a while since I last wrote about ConstraintLayout and how fun playing around with it is. Meanwhile it went through several alpha, beta and stable versions, so let’s dive […]

Ray Tracing with Akka – Part 1

About this series Most of the time, when you learn a new concept or a new programming language from a(n) (e-)book, you get the basics. But these are really far from the production-ready code with the new toolstack. The only good way to learn programming (like most of the other things in life) is to practice. […]

Tips and Tricks for Choosing an IT Thesis Topic

#changintheworld #oneappatatime   So, thousands of Hungarian college students turned their theses in last week. It was probably the peak in the middle of a sleep deprived period, as examinations are also still taking place. I decided to save all my key insights from this extraordinarily amazing period of time. (riiiight.) Hopefully it will help […]

The Best Scala Code Formatters and Linting Tools

Have you ever faced the problem: your PR on github is not merged because you didn’t follow the project style-guide? Or your IDE is reformatting the whole file when you just want to modify one line? We had some of theses problems with our own code-base here at Wanari (most of the time when we […]

XML Drawables for Android Developers

It’s good to know what you can do in xml to draw something on the UI. I recently noticed that I and some colleagues tend to overcomplicate simple tasks, because we don’t really know the built-in possibilities. Sometimes the design requires a not too complex, but not so simple (e.g. a shape) drawing on the […]

How are Scala Implicits more explicit than Java Generics?

This blogpost will show you how implicits can solve problems arising from/because of type erasure, proving that Scala implicits sometimes are more explicit than Java generics   All of these code snippets can be copy-pasted to the REPL. Some of the require-s will fail, those are just to demonstrate the expected work without the need […]

How Can I Use WebSocket on iOS?

If you’re a mobile developer, there’s a pretty good chance that you’ve used some kind of networking. Apps most often use a REST API, and usually it’s enough, as it allows fast and easy JSON based communication (here is a JSON object converter). One of the downsides is, however, that REST communication requires the client to […]

ZeroKit and Firebase Demo App First Look

If there is sensitive data to be stored when developing a mobile app, security is of utmost importance. Developers can make hackers’ work harder, but it’s almost impossible to totally prevent a data breach if they are at it. Key and encryption handling can be a real pain-in-the-ass. Storing encrypted data is one thing, but […]