Joy of XML with proper tools

I was doing a recruit platform, in Java, and within there I was currently writing the spec and mechanism for format definition file for IT Skills. Then I came upon our good old friend XML and it’s companion, the grammar definition XSD (XML Schema definition). These two have a relationship: Since XML files in general …

Setup R for experimenting with algotrading on Windows 10 (part 1)

Quantmod library is one of my first darlings in the exploratory experiments that I did for quantitative finance. I’d previously read about algotrading and all, but what sparked my interest really further were two things: VPRO documents on quantitative finance (Youtube) especially the VPRO doc ‘The Alchemists of Wall Street‘ availability and ease of use …

Boids – beautiful simulation of natural followers using an old algorithm

Boids – a log of Learning Java EE 7 / 8 Plan multithreading for the boid calculation definition of “one round” parallelism explained shadow values (a copy of locations before calculation) using shadow values the execution (order of picking a boid) from mesh does not matter shadow buffer makes the calculations virtually as if they …

Automating software installs on Windows 10

So, after a semi-catastrophy on my laptop, which was caused by me just jumping the gun on getting rid of ads by Acronis (backup software), I’m writing a software to ease and automate the post-bare-metal state. In English, that means installation of all those software that you had on your laptop, but never actually gave …

Windows batch scripting basics in 2020

Hey, imagine that you open your computer’s shell. And then you write a command. Question: What happens? And what was maybe supposed to happen? Computers are known to be quite fragile. More than physically wearing out or actually “breaking” a computer, you’re likely to possibly mess things up a bit. Messing happens often by: typo …

Seth and Froggly (short story)

Seth is 28 years. He graduated in recordtime from Harvard, having just finished studiesas the great 2008 boom and bust in housing burst.Luckily for him, his income was secured asa Team lead in a financial portfolio and investmentcompany called Inkin Finance. He found the years following the recession somewhatdepressing at first, but thought that thiswould …

fraone -> upgraded to kernel 5.4.0-17

Look at the small amount of tasks and committed RAM. Fraone is my Frankfurt’s digitalocean Ubuntu server. The VPS has: 4 GB RAM 80 GB disk I’d previously left it running 121 days consequtively, and there was 100+ processes (‘tasks’) running. Now with a clean boot and new kernel, it’s very neat. 42 tasks (only!) …

Scratchpad diary: ReactJS cooking on a Digital Ocean VPS (2020)

There’s probably a ton of ways to actually get going with developing React code. You need always anyways: shell Node and npm installed on either Mac, Windows or Linux One of the ways is get a VPS (a light, pay-by-use server) and do development there. I had the situation where I wanted to isolate my …