Modular Arithmetic

We have some articles in this blog about integers of typical programming languages and how they work. Time to introduce the underlying mathematical concepts, that have been covered implicitly until now, since they are also interesting in many other aspects. And besides, this is a very beautiful area of mathematics. Mathematics that we learn in […]

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Collection Libraries

The standard libraries of newer programming languages usually contain so called collection libraries. Collections can usually be Lists, Sets, Maps or specialization of these. They cover quite a lot and we start seeing variants that are built on immutability and variants that allow mutability and as always the hybrid in Ruby, that combines these and […]

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Alpine Perl Workshop

On 2016-09-02 and 2016-09-03 I was able to visit the Alpine Perl Workshop. This was a Perl conference with around 50 participants, among them core members of the Perl community. We had mostly one track, so the documented information about the talks that were given is actually quite closely correlated to the list of talks […]

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Error Messages in Web Applications

In Applications that are used by non-technical end users, which are these days very often web applications, we have to deal with the issue that an unexpected error occurs. There are the two extremes: We can just show a screen telling in a nice design that the application does not work and that is all. […]

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