Apache Spark - crash course

Working with NoSQL databases can be very inconvenient as we lose even the basic tools to get insights on our data. For instance, answeri...

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Why is there more talent in lower ranks than in management?

At generally unmotivated companies, why can you find more motivation and talent in the lowest ranks than in management? Not a number ga...

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Removing Malware and Bloatware from Lenovo K3 Note (K50-T5)

I’ve recently purchased a Lenovo K3 Note from Gearbest and it came with preinstalled malware and bloatware. Here are the things I had to ...

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How to remove adware (browser hijack or pop-up malware) from Android

The browser hijack style malware is getting pretty widespread on Android devices, especially the cheaper ones that can be purchased direc...

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Apple Swift language - crash course & language reference

Apple recognised that Objective-C is not only not modern but very much not appealing to developers who are used to modern languages. As thi...

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Taming Zookeeper - introduction and “how to” for Java and Python

Zookeeper is one of the most versatile projects out there but still somewhat underutilized and feared; however, almost every software pro...

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Beating the binary search algorithm – interpolation search, galloping search

Binary search is one of the simplest yet most efficient algorithms out there for looking up data in sorted arrays. The question is, can it...

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Java 8 parallel sort - internals

Java 8 is a quite big update to the platform and luckily they focused on multicore systems too. The new Arrays.parallelSort() implementa...

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Git cheat sheet - the most useful commands

After a little practise, Git can be fully utilised from the command line without any GUI. Adding, committing, pulling, and pushing is part ...

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Creating a simple TCP server in Java and using it from Python – to use the Stanford POS tagger

As the advanced network protocols flood the market we forgot how easy it is to create a simple server and a client if we want to integrat...

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Drawing circle and calculating sinus function without trigonometry, power, or root

The formula of a circle is quite straightforward ( r=sqrt(x^2+y^2) ) but it's not trivial how to draw a circle or calculate the trigono...

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