March 2, 2010
As I’ve written before, date and time calculations are surprisingly difficult. What’s more, even the bits that aren’t difficult often get messed up. Sony have just demonstrated this.
Apparently, a firmware bug in the real time clock in some models of PS3 lead the RTC to think that 2010 is a leap year. This confused the [...]
Filed under: Business, Programming | Comments (0)
January 31, 2010
In October of last year, someone built a new RubyGems hosting site called Gemcutter. Everyone liked it so much that GitHub decided to stop offering RubyGem hosting, and point people at Gemcutter instead.
Then the maintainer of RubyGems decided to make Gemcutter the default repository for gems when you install RubyGems.
Then RubyForge decided to get rid [...]
Filed under: Programming, Ruby | Comments (0)
December 1, 2009
A post about the three types of null value in LotusScript, and how they differ.
Filed under: Domino, Java, Linux | Comments (0)
September 25, 2009
I often have to shunt around Lotus Domino databases, as well as all kinds of log files and bundles of XML data. I’ve got a cable modem connection to my home office, but still, uploads can take a while. So data compression is still important to me, and the newer LZMA algorithm can make a [...]
Filed under: Design, Linux, Programming | Comments (0)
May 8, 2009
apt-get install openjdk-6-openjdk icedtea6-plugin
update-java-alternatives -s java-6-openjdk
For some inexplicable reason, Eclipse for Java Developers doesn’t include JDBC.
Eclipse J2EE edition doesn’t work with OpenJDK.
Oh well.
Filed under: Java, Linux, System administration | Comments (0)
March 16, 2009
DST is stupid, and it’s not the only thing that trips people up when coding date and time code.
Filed under: Programming | Comments (4)
March 9, 2009
A while back I made a brief attempt to embark on a voyage of Web Services discovery via JAX-WS. The problem was simple enough: I had a Java program running on server A which had an object. I wanted to send that object to a Domino server running on machine B.
Domino has a nifty Web [...]
Filed under: Domino, Java | Comments (0)
February 18, 2009
Suppose you have some text in Java that you want to manipulate. There are classes like StringBuffer for doing so, but let’s imagine that you choose to use a char array for some special reason.
Now suppose that several pages of code later, perhaps in a different piece of code entirely, you decide to use the [...]
Filed under: Java | Comments (4)
January 12, 2009
The SANS Institute has published a list of the Top 25 Most Dangerous Programming Errors. The list itself contains all the usual suspects–buffer overflows, SQL injection, relying on client code to perform data validation, and various other classics. If any of the items on the list strike you as surprising, you probably shouldn’t be writing [...]
Filed under: Java, JavaScript, Programming | Comments (0)
November 11, 2008
What is the shortest regular expression that matches only itself, including the / delimiters?
Filed under: Programming | Comments (1)