Our Blog

Recipe: How To Translate A Recursive Function Into An Implicite One

In order to determine the runtime of a recursive function, it is helpful to translate this function into an implicite one. This blog post illustrates a straight-forward approach, intuitively – with exactly 5 steps on a small example. This approach is also applicable for almost every recursive function.

Why Tho?

The reason to resolve a recursive function lies in the analysis and application. When interested in runtime analysis, the implicite function will serve as a guidance for the total runtime of the recursive function. When interested in application, the implicite function will have the same

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An (in-)formal Introduction To Attack Defense Trees

It is widely known that the security of a system seen as property is not static. Therefore, there cannot exist a general algorithm deciding whether or not a given system is secure in its sense. IT-Security Architects and Engineers are stuck with persistent research of bug reports of the technology the respective enterprise is using. In the industry, IT security is one use case of many others. The types of systems to examine vary depending on context. For instance, the construction of a museum is considered as a system and it is of interest to guarantee that the objects, stored in this kind of facility, are considered safe and sound. In consequence, it is urgent to establish a formal model for system description and security evaluation. There are various challenges to overcome, for instance:

  • What are the best defensive measures to invest in?
  • How can it be decided whether a defensive measure from the past is still necessary?
  • How can newly discovered attacks be efficiently documented?
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Finish **it! Jam // January 2021

Everybody knows it: You’re starting a game or project in your spare time or in a game jam and then the time runs out or the jam finishes, but the project doesn’t. Nevertheless, the project keeps popping up in your head every now and then… Now is the time to grab out one of your old projects and push it at least to an alpha or beta prototype!

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The Codevember 2020

This year was quite a mess with a lot of stuff that happened which led to a felt state of complete chaos. But as in every case: from chaos arises new order. While we had some trouble with the economy and the health systems and a lot of challenges to handle, the COVID-19 pandemic also triggered a lot of changes in social and political aspects: A lot of conservative pattern and habits were questioned and partly dissolved. We had the chance to experience change in places where we didn’t expect it and (sadly) also to wait for the change which never happened.

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A Few Words On Algorithm Complexity

One of the key properties of a given algorithm is its complexity. A computer scientist is interested in the adequacy of the algorithm runtime relative to the size of the input. While there exist sharp runtime lower bounds for any given algorithm, for upper bounds however, the sky is the limit. It depends on the quality of optimization.

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Automating Telegram Games

We all know the feeling when someone breaks your hard-earned highscore as if it was nothing. In this blog post, I want to show you how you can hack the game logic of the popular Telegram game ‘Lumberjack’ using Python and be the best among your friends for good.

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How it all began

This is what this idea was all about: In Tübingen, a small university town in the south of Germany, a few people and friends were blocking one weekend for a project which was beyond the everyday coding and studying routine and activities.

Our Story

We all have been passionate programmers or, if not, have been passionate about something else. Sadly, often in life the daily routine and the things you like don’t allow the freedom to free your mind and play around with them – or they don’t go hand and hand at all. With this in mind, we tried to start the Codevember project. In the beginning in 2014 it was only one day – blocked for a project we would love to do and we’ve been passionate about. We soon realized that one day wasn’t enough at all to find a idea, choose a coding environment and frameworks, set them up and finish the project. However, we’ve learned a lot and decided to catch up every year in November from then. The Codevember rose and quickly became a mixture between an annual reunion and a playground for ideas and coding skills. 

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