Archives for September 2007

upgrading WordPress

I just upgraded WordPress to the newly released version 2.2.3, using Subversion as described here. I used to upgrade WP by hand, a tedious task at best. Never again. SVN makes the upgrade process short and sweet. Highly recommended.

sum of file sizes

This was recently posted to the erlang-questions mailing list I am trying to grok how to write a simple ‘du’ like program that walks a directory structure ( not just one but all nested directories ) and calculates a sum of all the file sizes. I found some sum() code that I understand how that [...]

generating random permutations

I want to consider the simulation of dealing a deck of cards. The deck is simply the list of integers D = [1,2,...,52]. Dealing the cards amounts to generating a random permutation of D. Here’s how I would do it in java. public class Shuffle { private static java.util.Random rand = new java.util.Random(); // construct [...]