Freelance Software Developer
Java / Kotlin / Spring
PostgreSQL / pl/pgSQL
TypeScript / Angular
eXtreme Programming /Kanban / Scrum
While most AI code generation examples show how to quickly bootstrap a new web application, I was curious how far an AI coding assistant can take me in an existing, non-trivial codebase – one with a Java backend, automated tests, APIs (OpenAPI), PostgreSQL database migrations (Liquibase). So, I decided to explore the open-source AI tool aider, applying it to one of my Open Source projects.
I had severe problems with PulseSecure VPN (with a MacBook Pro). Direct WiFi connections seemed to work fine, but as soon as the VPN was active, connections to the intranet were super slow or stopped working at all. When using a proxy to access the Internet, nothing went through anymore. I am still not sure about the cause, but found a solution.
In this article I collection questions which I posted on Twitter, maybe you have an answer? Looking forward to your responses!
Immer mehr Konzerne gehen aufgrund der Rechtsunsicherheit im Bezug auf rückwirkende Sozialversicherungspflicht keine Verträge mehr mit Freelancern ein, sondern beschäftigen externe Mitarbeiter nur noch über Arbeitnehmerüberlassung (ANÜ). Hier stelle ich einen Ansatz zur Berechnung eines Gehaltsäquivalents auf Basis eines Stundensatzes vor.
The gradle wrapper can download and verify a specified version of gradle for a project without the need of a local gradle executable. The gradle documentation suggests to check it into the VCS (version control system, e.g. git). This article discusses the advantages and disadvantages of keeping the gradle wrapper in a VCS and presents an alternative.
COBOL (COmmon Business Oriented [programming] Language) dates back to 1959, and is still used in its realm of business software, mostly on mainframe computers. Of course, there are also many related software modernization and migration projects. Thus, once in a while even non-mainframe developers might need some COBOL knowledge. Commercial _COBOL_ systems, especially on real mainframes, are expensive. In this article I demonstrate how to set up the GnuCOBOL compiler and integrate it with Visual Studio Code on Ubuntu Linux, but it also works on Windows and macOS. This way, experimenting with COBOL becomes easy and cheap.
Using snippets from compilable source code files in prosa documents is a great approach. By doing so, I can make sure that the source code actually compiles. By adding unit tests, I can even make sure it does what it's supposed to do. I knew such is possible with AsciiDoc/AsciiDoctor, but does it also work if AsciiDoctor is run via JBake?
Finally, I had enough time to migrate my website and blog from WordPress to JBake, a static website generator written in Java. In this article I explain why I switched the technology and how I automatically migrated my contents -- conversion-script included.
While researching why so many people like Python, I found and article which showed how much more readable Python code is compared to Java code. I was curious how well Kotlin does that job.
This article demonstrates how at least some uses cases for an object spread operator can be implemented with Kotlin.
Project Euler Problem 001 with Haskell. An exercise in Functional Programming.
"Java by Comparison" leads the reader through 70 examples into software-craftship. Each example compares a snipped of typical "unclean" code with a "clean" replacement, including a short discussion about the reasoning.
Wouldn't it be cool having something like `find ... | xargs -L100 --show-progress-bar ...`? Unfortunately this feature does not exist in `xargs`. This article explains how the same result can be achieved by other means.
Recently I ran across a missing `method="post"` in a `
Da kauft Facebook WhatsApp und viele wechseln zum angeblich sicheren Threema. Doch ist Threema wirklich sicherer? Und wie sähe ein wirklich sicher Messenger aus?
Kurzbericht von einem Abendvortrag bei OOSE zu Praktiken, Mustern und Methoden zur Analyse, zum Vergleich, zur Lehre sowie wissenschaftlichen Untersuchung des Software-Engineerings.
Wie man im Oracle SQL Developer DATE Spalten mit Uhrzeit anzeigen kann.
Über einen kleinen aber wesentlichen Unterschied zwischen _Hibernate_ und _EclipseLink_ bei der Validierung neuer Entitäten.