Ruby: recursion, stack size and tail call optimization

One accurate measurement is worth a thousand expert opinions. – Grace Hopper Maintaining the right temperature for my swimming pool is crucial for enjoying a good swim. Instead of frequently checking a thermometer or relying on a mobile app, I wanted to get real-time temperature updates remotely. Here’s how I achieved this using an affordable BLE...

The computer was born to solve problems that did not exist before. – Bill Gates Understand the problem Processes are secondary, doesn’t matter if it is Agile, Kanban or Waterfall: you just need to have an exact understanding of the problem to be solved and plan/organize your work around that. And, of course, be able to adapt. Changes will occur...

The nice thing about standards is that you have so many to choose from. ― Andrew Tanenbaum I’ve using Home Assistant for about 3 years now, for some basic automations like turning devices on/off on determinated periods and for energy production/consumption monitoring. Recently I bought this Energy Meter device from AliExpress to monitor the...

The Linux philosophy is ‘Laugh in the face of danger’. Oops. Wrong One. ‘Do it yourself’. Yes, that’s it. ― Linus About 9 years ago I wrote a post explaining how to turn your wi-fi router in a NAS and Media Server with OpenWRT (pt-BR) and it’s was a huge success. By far is my most viewed post until now. In the post I warned about the risks of...

Any sufficiently advanced bug is indistinguishable from a feature. ― Rich Kulawiec TL;DR Always use the Time class and correctly stores the time zone information. Time Based on floating-point second intervals from unix epoch (1970-01-01); Has date and time attributes (year, month, day, hour, min, sec, subsec); Natively works in either UTC...