Just getting back from the most fun meetup I have been to in quite some time: episode 23 (by their count) of Open Source Open Mic hosted by Matt Godbolt and Joe Walnes here in Chicago. Nothing but a sequence of lightning talks. Plus beer and pizza. Sounds awesome? It was!
And I am only half-joking. I had used R a couple of years ago when I needed to select, subset, modify, ... a large number of image files given some timestamp and filename patterns. And given how well R works in a vectorised manner with both regular expressions and timestamps, as well as on top of essentially all standard POSIX-style operating system / file-system functions, I picked up that thread again on the problem of ... cleaning up the file storage underlying CRANberries which by now has well over fifty-seven thousand (!!) tarballs of CRAN packages based on now ten years of CRANberries. So I showed how to prune this in essentially half a dozen lines of R (and data.table code), plus some motivation---all just right for a lightning talk. Seemingly the talk went well enough as quite a few folks gave a thumbs up and compliments over beers afterwards.
My thanks to Matt and Joe for organizing the meetup. I think I will be back.