Pupeno’s web site

For the purpose of writing this article I’m going to use the following definition of “operating system”. There are other definitions and I’m not claiming this is the right one. An operating system is a unit of software that you can install in a computer and will let you use the computer, thought a set […]

Recently my friend Juanjo pointed out how much activity my blog has been having recently. Thinking about it, he is right and there are two reasons why this may be the case:

I’m more inspired than usual. I’m not sure if this is the case, and even if it is, it’s not helpful for me to […]

Randall Munroe evidently lives in a world of 12-hs clocks (instead of 24-hs clocks).

Or maybe there’s a message beyond my understanding skills.

Squeak is by far the best and most complex Smalltalk implementation out there. It may not play well with other operating systems because it is an operating system by itself. It is also one of the most impressive development environments I ever seen. OK, the most impressive.
The only thing that bothers me is that Squeak […]

I’ve made an image to describe Common Lisp method composition (or CLOS method composition if you want):

Download Common Lisp method composition.png or Common Lisp method composition.svg.

I have just made a new release of Score Reading Trainer, 0.1.4. This release has a very important bug fix, thanks to Julian Kniephoff. The fix allows to use notes below the first line of the staff without getting the extra lines mixed and eventually crashing. It was also upgraded to compile correctly and easily […]

After watching the OpenID community grow for years, I finally joined them. I’ve liked the idea from the first day I’ve read about it; aren’t we all tired, after all, of having to remember hundreds of usernames, passwords (sometimes with conflicting constraints: a password must have numbers, a password can’t have numbers)?
From OpenID’s web site:
OpenID […]

Microsoft is currently trying to make its own document format, OOXML, an ISO standard. We already have a good, free, open, non-pantented document format called Open Document. Microsoft is only trying to avoid loosing its dominance in the office suite market. If all they wanted was to make a good product they would just implement […]

SCons is a program designed to replace make and autotools. SCons being a new tool is built with all the knowledge of what problem really this kind of tool should be solving, while make and autotools were built while discovering the real problem. It is natural to expect SCons to have a better design that […]