May 10, 2019

Optimize the performance of large lists in Angular

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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Lino Fischer
Developer at thecodecampus </>


April 17, 2019

Content Projection in Angular

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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Kai Henzler
Developer at thecodecampus </>


April 15, 2019

How to use Angular Environments shown with a Tetris Game

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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Admin Admin
Developer at thecodecampus </>


April 3, 2019

Fill Gitlab-CI Postgres Database Service with SQL

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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Admin Admin
Developer at thecodecampus </>


April 1, 2019

Refactorable reactive forms in angular

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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Sascha Engmann
Developer at thecodecampus </>


December 31, 2018

Android Room: room Entity class must be annotated with @Entity

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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Admin Admin
Developer at thecodecampus </>


December 11, 2018

Using git hooks to keep your codebase clean

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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Kai Henzler
Developer at thecodecampus </>