The rest of the discussion in the tweet itself is well worth reading. And naturally there's a lot of interesting and devisive discussion on this one on Hacker News.
Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree on a whiteboard so fuck off.
— Max Howell (@mxcl) June 10, 2015
The rest of the discussion in the tweet itself is well worth reading. And naturally there's a lot of interesting and devisive discussion on this one on Hacker News.