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Rainer Hahnekamp

Rainer Hahnekamp

Software Engineer

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Posted on 9. December 201710. December 2017

Remove Null Checks and Default Values

In this article I show how well-meant null checks and default values can cause serious bugs.

Posted on 27. November 2017

Devoxx 2017 – Summary

Summary of my notes from selected talks of Devoxx 2017 in Antwerpen, Belgium.

Posted on 4. November 20174. November 2017

ReactiveConf 2017 Summary

ReactiveConf 2017

Detailled summary of ReactiveConf 2017 that took place in Bratislava on the 26th and 27th of October.

Posted on 30. October 201729. April 2018

Updating Angular CLI Dependencies

Updating Angular CLI dependencies

In this post I show two possible solutions to automate the upgrade of the Angular CLI-generated dependencies in an application.

Posted on 30. September 201730. September 2017

Docker as Build Environment

I want to shed light on the often unnoted role of Docker as a build environment in larger and legacy applications that regularly must be maintained and extended. In particular, I want to highlight Docker’s role during the build process.

Posted on 20. August 201727. August 2017

On Modern Software Development

This articles describes the shift to modern software development by discarding pure coding in favour of using and applying the right libraries and tools.

Posted on 1. August 201715. January 2018

Ignoring Lombok Code in Jacoco

In this posting I show how to ignore code generated by Lombok in the upcoming version of Jacoco 0.7.10.

Posted on 14. July 20175. August 2017

Talk on Typesafety in JavaScript Applications

Posted on 14. June 20175. August 2017

Typesafe Endpoints with TypeScript and Java

In Single-Page-Applications (SPAs), the server usually provides endpoints (API) and does no rendering at all. I will show how to convert message types of an API to TypeScript types automatically within the context of Spring MVC.

Posted on 24. May 20175. August 2017

Spring MVC & JSON Serialization

This posting shows how to customize json serialization with of Spring MVC by using Annotations or extending the ObjectMapper.

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