Link roundup (IV)

1) Reflections on a decade of coding was a great read—especially the Coding section. On a similar vein, reading grug is always a good idea. 2) I like reading about security vulnerabilities. For the most part. I came out of this write-up terrified and swearing off CUPS forever. In case you think I&rsquo;m exaggerating, here is a follow-up . 3) Writing a calculator app is easy, until you think about…