There are already loads of resources on the interwebs explaining the purpose of regular expressions so no need to explain further here. (Well basically, they allow you to match and extract patterns of text from strings). I just want to document a few quick examples that I use a lot.

The new graph api makes it really easy to show user profile pictures. It doesn’t however give you your full size profile picture. Find out how to get that too.

I’ve been building a few Facebook applications recently, and would like to share solutions to some things that caused me lots of headaches.