Archives for Computers

Learning Clojure

I have always had a thing for functional programming. Not so much for functional languages maybe, but definitely for functional programming principles. I had learned a tiny bit of Lisp at the uni and have fond memories of reading “On Lisp” by Paul Graham, but I never really tried to learn any Lisp for real. […]

Personal groupware

Oh, wow. It has been a long while since I wrote anything on this blog. Hopefully I’ll get back in shape soon. This time I wanted to write about groupwares for personal use. As you may know, I had already written a personal wiki, and several weeks ago I started thinking that it would be […]

Javascript for n00bs

Recently a friend asked me for an easy way to learn JavaScript. I can’t remember how I learned myself, but I do remember some things that were surprising coming from other languages, or that I had guessed wrong or took me a while to understand for whatever reason, despite not really being complicated at all. As […]

Writing music, printing .gpx files

UPDATE 2012-10-27: I have updated the .gpx viewer to recognise silences! Download the updated version. Note: if you’re only interested in printing .gpx files, download and follow the instructions in the README.txt file. I have been playing with my last band for over half a year now. From the beginning the idea was to write […]

Exceptions in Node

Whoa, boy. It seems I haven’t written for a good while now. Let’s fix that. One of the things I had in my list of possible posts was my experiments (and frustrations) with Javascript exception classes under Node, so here we go: I needed to have several exception classes in Javascript (concretely, for RoboHydra, which […]

Small experiments with Cherokee

A couple of weeks ago I decided to move my wiki (see Wiki-Toki on GitHub) and my package repository (see Arepa on CPAN) over to a new machine. The idea was to move it to some infrastructure I “controlled” myself and was paying for (mainly inspired by the blog post “A Set of Tenets I […]

Unit testing advice for seasoned hackers (2/2)

This is the second part of my unit testing advice. See the first part on this blog. If you need any introduction you should really read the first part. I’ll just present the other three ideas I wanted to cover. Focusing on common cases This consists of testing only/mostly common cases. These tests rarely fail […]

Unit testing advice for seasoned hackers (1/2)

When reviewing tests written by other people I see patterns in the improvements I would make. As I realise that these “mistakes” are also made by experienced hackers, I thought it would be useful to write about them. The extra push to write about this now was having concrete examples from my recent involvement in Tor, […]

Book summary: Designing with the Mind in Mind

This is my summary of “Designing with the Mind in Mind” by Jeff Johnson, a book about user interface design that explores the reasons why those principles work. Introduction How valuable are UI design guidelines depends on who applies them. They often describe goals, not actions, so they can’t be followed like a recipe. They […]

Emacs adventures

I have been using Emacs for over a year now. I actually didn’t learn a lot when I started using it (just the basics to get going and then some relatively common keyboard shortcuts), but lately I have been reading and learning much more about it. I’m so grateful by everything I’ve learned from different […]