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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There are many ways how IntelliJ IDEA can boost your productivity by raw input speed. Firstly, there is Code Completion which is a standard for most code editors, and offers a great deal of help. Secondly, there is Postfix Completion. Maybe this name doesn’t sound familiar to you but you are probably using it already. […]
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This Article is based on Kara Ericksons talk about “Angular Forms” at the Angular Connect 2017. https://www.youtube.com/watch?v=CD_t3m2WMM8&amp=&index=15 I am going to give you a quick example to get started with nested Forms. TL;DR Extract the HTML in new Component Inject ControlContainer in new Component Access the Form via ControlContainer.control pass the parent Form into the […]
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When it came to building a Flutter MVP application, I was very dissatisfied with the existing Flutter Images. They were outdated by many many versions. Therefore I created an image reflecting the current version of Flutter. The source is on Github, you can find the Image ‘kattwinkel/flutter-android’ on Docker Hub. A minimal .gitlab-ci.yml file might just […]
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My guess is your using Angular in combination with Angular Material and you desperately need a sticky footer, ideally, in a variable height. No need to look any further. This article will provide you with a basic solution for given circumstances. This article was updated and tested for Angular 7 and Material 2 Version 7.1.1 […]
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Since the release of Angular 7, the Angular CDK includes a feature that can improve the performance of your application dramatically. Virtual scrolling is highly beneficial for dealing with a lot of data in tables or lists. You can improve performance for large lists in Angular with the Angular CDK virtual scrolling component. What is […]
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Problem You probably already run into this issue. Inside a component, you want to react to the change of an @Input() value e.g. by calling a method of your component. For example we have get an @Input() filter: string from our parent component and if the @Input() changes, we want to update our data in […]
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