rahji.com

This is a list of twenty arbitrary challenges for people who are learning to create using a tool like Processing, Quartz Composer, or the like.

This is my tutorial for using Processing with the OSCemote iPhone app.

I made a couple simple demos for the VIS145A students at UCSD to show how we can use an iPhone as the interface to Processing sketches.

I’m teaching Processing to art students at UCSD and the course’s professor has basically asked them to create visual rhythm. I made a few sketches to show a simple way in which this might be accomplished.

If you use Mail.app to read RSS feeds and want to export the URLs for those feeds (maybe you want to use some other RSS reader now?), you can use this command.

I modified my phpstates code include to display countries and Canadian provinces as well. The country codes come from the UPS developer’s API. This is another one of those snippets that I use often, so maybe it will help you out.

Here’s how you can create perl scripts in TextMate, starting from a template instead of a blank screen.

I was looking for a quick and simple PHP function that would validating credit card numbers, but the code I found was mostly clunky and sometimes just wrong. I wrote this function and it seems to work correctly. Feel free to use it and leave a comment here if it works for you.

This is how I find out where a remote client is coming from. It takes into account proxies and tries to get the hostname using gethostbyaddr(). Frankly, this was written many years ago so I’m not sure if I’d do it the same way. If nothing else, it should be a good [...]

Ever wanted to create a 1 pixel transparent GIF with Perl? Me neither, but this is still neat to have in the toolbox.