Posts

We believe that a free and open Internet can bring about a better world. To keep the Internet free and open, we call on communities, industries and countries to recognize these principles. We believe that they will help to bring about more creativity, more innovation and more open societies. We are joining an international movement to defend our freedoms because we believe that they are worth fighting for. Let’s discuss these principles ” agree or disagree with them, debate them, translate them, make them your own and broaden the discussion with your community ” as only the Internet can make possible. ...

In every decent programmer’s toolbox lies a strange weapon called a Radix Sort. Where does it come from ? Who invented it ? I don’t know. As far as I can remember it was there, fast, easy, effective. Really effective. So unbelievably useful I’ve never really understood why people would want to use something else. The reasons ? Most of the time, they tell me about floats, negative values, and why their new quick-sort code rocks. ...

A lot of programmers that make some of the coolest and most useful software today, such as many of the stuff we see on the Internet or use daily, don’t have a theoretical computer science background. They’re still pretty awesome and creative programmers and we thank them for what they build. However, theoretical computer science has its uses and applications and can turn out to be quite practical. In this article, targeted at programmers who know their art but who don’t have any theoretical computer science background, I will present one of the most pragmatic tools of computer science: Big O notation and algorithm complexity analysis. As someone who has worked both in a computer science academic setting and in building production-level software in the industry, this is the tool I have found to be one of the truly useful ones in practice, so I hope after reading this article you can apply it in your own code to make it better. After reading this post, you should be able to understand all the common terms computer scientists use such as ”big O”, ”asymptotic behavior” and ”worst-case analysis”. ...

SKIP THE LICENSE Reading software licenses sucks, so we’ve summarized all of the popular ones for you in a neat at-a-glance format. Just begin typing the name of your license on the frontpage and select from the auto-completing drop-down menu. TL;DR - We summarize software licenses. LET THEM TAKE IT EASY Do you have people using your software? We all hate reading software licenses. Let them take it easy and link them to your license on here. We provide embed and linking options for every license on the site. Next time include a link alongside your license. TL;DR - Link a summary in place of a license. ...

Primeros pasos con Ubuntu 12.04 es una guía para principiantes del sistema operativo Ubuntu. Se encuentra disponible bajo una licencia de código abierto y su descarga, lectura, modificación y distribución son libres. El manual le ayudará a familiarizarse con tareas cotidianas como navegar por Internet, escuchar música, escanear documentos y mucho más. Al centrarse en instrucciones fáciles de seguir, es adecuado para todos los niveles de experiencia. » ubuntu-manual.org

El otro día me quedé sin poder probar la conexión inalámbrica en Raspbmc porque los puertos USB de la Raspberry Pi no dan suficiente potencia para la antena WiFi USB que tengo. Cada puerto USB proporciona hasta 100mA, y parece que el consumo de la antena oscila entre 150mA y 200mA, por lo que no es suficiente. Quizá conectando un cable USB en Y desde los dos USB podría llegar a funcionar, pero nos quedaríamos sin puertos USB libres. ...

El pasado día 26 de junio asistí al evento ”Iniciativas Open Data en España”, atraído sin duda, por los grandes espadas en la materia que son Alberto Abella, Roberto Santos y Victoria Anderica, que además del reconocido prestigio que tienen, llevan años trabajando para que este país sea algo mejor. Como cabía esperar, no me defraudaron en sus intervenciones, que fueron tan correctas como acertadas. Como contrapartida, y diré el pecado, pero no el pecador, tuve que oír de boca de ”expertos” en la materia, estas dos afirmaciones, que me preocuparon y mucho, puesto que pueden afectar muy negativamente a la Ley de Transparencia y su desarrollo posterior: ...

Although the Enigma cipher as a whole is quite complex (it’s complexity is comparable to modern cryptographic algorithms) the individual transformations within it are relatively simple. In fact, they are simple enough that you can decipher an Enigma message with just a paper model. Our model is three-dimensional, to illustrate the wiring of a real Enigma machine. It needs only common household items to construct, and is completely compatible with all settings of a real Enigma machine (models I, M1, M2 and M3). ...

Raspbmc es una distribución basada en debian que permite ejecutar XBMC en la Raspberry Pi, lo que la transforma en un interesante reproductor multimedia casero (HTPC). Esta distribución recibe actualizaciones constantes que añaden mejoras, actualizaciones de drivers y nuevas funcionalidades. Además, permite compartir el contenido multimedia a través de NFS, SMB, FTP y HTTP. Raspbmc ha sido creada y está siendo mantenida por Sam Nazarko. Fuente retrocomputers.eu ...

Large projects can contain thousands of lines of code, distributed in multiple source files, written by many developers and arranged in several subdirectories. A project may contain several component divisions. These components may have complex inter-dependencies ” for example, in order to compile component X, you have to first compile Y; in order to compile Y, you have to first compile Z; and so on. For a large project, when a few changes are made to the source, manually recompiling the entire project each time is tedious, error-prone and time-consuming. ...