Google is famous for integrating tiny, handy features directly into its search results. With a new in-line live code editor that pops up when you search for programming questions, Bing may just have beaten Google at its own game.
If you search for something related to a major programming language in Bing, you'll now get a live code editor with examples of how to solve your problem. You can edit the code and run it all in-page, with instant feedback.
It's powered by HackerRank, so none of the technology powering it is particularly complicated or new. But having it pop up in search results is still useful, and a lot easier than trying to remember the last time you fired up Python. [HackerRank]