When I wrote my OAuth code examples almost 7 years ago, I didn’t think that they still would be useful today.
Back then, OAuth 2.0 was still being worked on, and now it seems that almost everyone has a flavor of it available for use.
Nevertheless, my OAuth 1.0 examples still run; the only change I had to make to the source code for Yahoo and Twitter was to update the uri scheme from http to https.
I’ve also updated the original posts with more recent links where appropriate. Besides these two changes, I didn’t have to do anything else. The code still works today, January of 2017.