October 8, 2009 – 3:29 pm
I wanted to use Grok for my future development, so I just spent a week trying to do porting of a project from Django to Grok. I had to back off. Grok is very powerful without doubt. However, the learning curve is steep, and I am not talking about “mountain trekking” steep, I’m talking about [...]
August 28, 2009 – 10:50 pm
I just installed Snow Leopard, MacOSX 10.6, on my laptop. It is indeed much faster. Considerably faster. I don’t have actual measures, but you can appreciate it. The interface is much snappier in response. There are many tiny improvements around, minor things, nothing revolutionary, although I really appreciate the new Expose’: now you can recall [...]
You are welcome to take a look at Part 1 and Part2 of this series. In this third part of the “silicon-based” bacterial evolution, we move to the real action. I developed a program (you can download it from here), which perform evolutive selection based on mathematical criteria. The program has a set of rules [...]
Suppose you have a MySQL table containing an enum column. The enumeration allows the values “FOO”, “BAR” and “BAZ”. This is a production database, hooked up by a quite huge amount of programs inserting and deleting rows into that table. Now suppose that, for some reason, one of these programs tries to insert the value [...]
I just released Chestnut 2.2.0. Just grab it while it’s hot!
I had the chance to see the google wave presentation I was in awe with the power of this old, new thingie. As soon as wave is released to third parties, email will be a thing of the past in less than three years. Start counting, I can bet on it.
This is the second part of a post relative to evolution. You can find the first part of the post here. The last argument in the first post was relative to the requirements for evolution to happen. To recall, you need An imperfect replicator, an entity able to produce a copy of itself, for example [...]
This post is in different parts. The fact is that it requires quite a lot of time investment, something I really don’t have in this period. A long time ago I wanted to play with the concept of genetic code, and how it represents nothing but a language to code for molecular machines. As the [...]
Gnuplot is a great software. Very useful for easily plotting datapoints without fuss and complicated interface. However, the default accepted format is a table defined by space-separated values. If you have comma separated values, then you have to change the delimiter. But how? This command set datafile separator “,” will do the trick.
February 27, 2009 – 2:18 pm
Sometimes it happens to me that my hard drive starts being accessed in a very aggressive and noisy way. I found a couple of commands to see who is responsible: sudo fs_usage -f filesys and also sudo iotop In the last one, you could get error messages like dtrace: error on enabled probe ID …. [...]