I recently purchased the O'Reilly book Programming Interactivity - A Designer's Guide to Processing, Arduino and openFrameworks. All the example code in the book is "supposedly" available for download, but the link in the book only provides example code for about 4 of the 18 chapters.
Have I missed something here?
if you are referring to the first edition of that book, you can find the code here:
If there is code missing please let us know at email@example.com so we can get that sorted out for you.
Customer Service Rep,