links for 2005-08-16 Sep 17th, 2005 Concrete Abstractions: An Introduction to Computer Science Using Scheme A classic available online (tags: lisp) Catch Jackrabbit and the JCR API Reminds me of Lotus Notes Datastores (tags: programming java) Using PyObjC for Developing Cocoa Applications with Python Jonathan “Wolf” Rentzsch’s introduction to PyObjC (tags: macosx)