Category Archives: Programming

Does quantum computing helps to understand the paradox of Schrödinger’s cat?

Quantum computers look like the first mainframe computers in the 1940s and 1950s: room-sized devices that only a small number of experts have access to. Almost like the Oracle of Delphi with its special caste of priests. Unlike back then, today, everyone can use this technology via the Internet.

Migrate a Ruby on Rails App to Rails 4.x with “Strong Parameters”

A helpful rake task I’m just updating a three year old rails app from 3.2 to 4.2. One of the changes is that now the controller is responsible to protect against mass assignments. I think this is the right architecture, as the controller has the job to receive the input parameters and transfer them to …

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How does the NFC-Hunt App from Google works?

Google organized a kind of scavenger hunt for the developers conference IO 2013 to demonstrate the practical use of NFC. Participants needed an NFC-enabled Android and then installed an app called “NFC Hunt”. The app gives clues where to find specific NFC tags in the real world. The user has to find and scan these …

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