We just recently enabled R8 in our Android app. What does this mean? Why do I sometimes use the term proguard and even added proguard.pro files to the source code? And how do we enabled R8 in the app in several steps? All these questions can be answered in this…

If you have a composable function you might stumble over the following block of code. You might have even written it by yourself: val stringState = remember { mutableStateOf("") } Because I sometimes got confused about this “simple” line of code, I took some time to finally understand what it…

And you can be part of it to get some swag! — This is my third anniversary of organising a Hackday. The story began in 2020 when I took over the annual Hackday at ioki, this then continues in 2021 when I started to evolve the concept of the Hackday a bit more to my wishes. This year, 2022, will be a…

Same as last year, I organized an Hackday at my current company. Luckily, we could spend this year together in the office, and not seperated throughout the state. Because of this opportunity, it was possible to order Pizza together — probably the most important part of every Hackday. But even…

Let us start with a simple use case: Imagine we have to build a web app where you can enter an address and you get the latitude and longitude for it. For this app, we want to use the Google Maps Geocoding API. To get the information we need, we…

All of the following decisions and thoughts about moving from RxJava to Kotlin coroutines originated from a meeting where one of us said: “RxJava 2 will be deprecated in one week”. So we discussed what we want to do. In the short-term, but also in the long run. …

I just finished my first review meeting in a Golang learning group at work. Today I want to share a very interesting discussion with you about the bufio.Scanner we had there. I don’t want to dive deep into the learning group and what we do there. But to get you…

As a mobile app developer or app designer, you may know the issue. Over the years, while both teams iterate over the app, you start noticing that the published app looks different than the designs. While the user experience is overall the same, there are mostly smaller differences. A text…

Before I show you some code snippets, let me explain my current project, which issues I faced there, and how Goroutines fixed these. I have developed a web application that makes an HTTP request to the App Store or to the Play Store or both. Depending on the input parameters…