Category Archives: Uncategorized

The Brilliant Concept of Standard Streams in Unix (1)

Posted on March 22, 2018 by

1. The basic idea of standard streams In the 1980s, almost every book or class on computer science here in Germany started with an explanation of the EVA-Prinzip, where E stood for Eingabe (Input), V for Verarbeitung (Processing), and A … Continue reading →

Posted in Linux, Uncategorized | Tagged , , , , ,

How to use ancient Morse code to solve a modern problem

Posted on October 3, 2017 by

If you own a Raspberry Pi mini computer the following problem may sound familiar to you: You just connected your Rasperry Pi to a network with automatic DHCP. Now you need to find out what IP address has been assigned … Continue reading →

Posted in c, Information Theory, Linux, Raspberry Pi, Uncategorized | Tagged , , , , , , ,

Let’s make the heap explode!

Posted on December 5, 2014 by

This blog entry is dedicated to those who teach computer science at high schools and vocational schools. In one of my Java programming classes, only few of the students showed up. It didn’t seem to make sense to continue with … Continue reading →

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Floating Point Representation

Posted on November 1, 2014 by

Back in the days when I was in middle school, I started to develop a strong preference for “nice” and “short” numbers, such as 0.1. One likely reason was that any math problem in school was designed to yield a … Continue reading →

Posted in Bit-Twiddling, Math, Uncategorized | Tagged , , , , ,

Regular Expressions

Posted on October 28, 2013 by

At the very beginning of this post I’d like to point out that this is neither related to a specific programming language nor related to a specific operating system, although I’ll need to employ some “real-world” examples for better understanding. … Continue reading →

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Pointers and References – Part 4 (Hacker Stuff) ;)

Posted on July 2, 2013 by

Ok, guys … party’s over. Some of you have requested some more in-depth stuff on pointers, so here we go: Function Pointer Arrays. Depending on your previous programming experience, Function Pointer Arrays (FPA) may seem a bit nerdy to you. … Continue reading →

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A Beginner’s Guide to Object Oriented Programming (2)

Posted on April 27, 2013 by

Long time no see. I hope you still remember my recent posting on object-oriented programming. Here is part two, which I hope you are interested in. Today, we are going to have a look at inheritance. If you do not … Continue reading →

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