Some of you might have stumbled upon an unexpected error message, while updating your project from ng7 to ng8. We all know that. Everything runs smoothly and we use the last 10 minutes before heading off for the update. Not a major issue. Already having packed your stuff and ready to head home, you get […]
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Coming up with the idea Let me sketch the scenario which led me to implement the rear view mirror desktop application. I was trying to fix a rather strange bug, at some point I realized I was stuck and asked a colleague for help. When we both realized that we need to ask another developer […]
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In this blog article I would like to describe a stumbling block I stumbled across in my work. TypeScript (TS) is a very good way to increase productivity. The compiler and type system fix many software bugs before they occur. Also the possibility to translate into different versions of ECMAScript (ES) is a useful feature […]
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Challenge If you are working with lists or tables which have a big amount of rows and columns, the performance can get worse if you don’t watch out. Especially if you have a large table with a lot of FormGroups inside. The following steps should clean up your code and increase the performance of your […]
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What is Content Projection Those of you who already worked with angular.js 1.x might be already familiar with the concepts described in this post. In angular.js 1.x you might know this concept under the infamous name transclusion. It’s not a concept invented by the Angular Team but rather one that describes how content of any […]
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About Ng-dropping-stones is a small Tetris clone built with Angular 7. It can be played in the browser as well as on a raspberry pi based arcade machine, which we present at fairs (JavaLand, enterJS, Herbstcampus). History At first, ng-dropping-stones was designed for our arcade machine to present it on fairs. It was very well […]
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We all love the Gitlab-CI and it’s docker support, also the services are a nice feature to get a database into your pipeline task. But recently we had the issue that we need to prefill the given postgres:latest  service with some sql data for testing. For ubuntu based docker images, there is a easy solution: […]
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Problem When creating forms with Angular, many accesses take place in the template using strings. This makes it difficult to perform refactorings automatically. It would be so desirable: Status quo Also the FormBuilder does not manage to get the problems better under control. It is only a help for the creation of the data structure […]
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If you run into the following error you probably provide a class that is either not correctly annotated or shouldn’t be there.

The source of this problem usually can be found by looking at your database class, the example code is in Kotlin but should also apply to Java:

Now make sure, that any […]
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Problem Let’s be honest – developers tend to be lazy. Whenever you start a new project you’re probably saying to yourself that you want to do everything better this time but often times your new project becomes the same mess as your previous one. I want to introduce a neat little trick that might help […]
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