In this thread, people have been starting to post and discuss their solutions to this year's Advent of Code problems.
To help make this easier to organize and discuss on Tildes, I've decided to create a sub-group devoted to it: ~comp.advent_of_code. We can keep this sub-group around for a couple of months or so, and this way we can split into separate topics for each day's problems, people getting started later can still get involved easily, and it will also make it simple for others that aren't interested to avoid the posts (just don't subscribe).
I've automatically subscribed everyone that interacted with that original topic (by commenting in it, or voting on the topic itself or any of the comments), but nobody else. So if you're interested in participating in Advent of Code or discussing it, please subscribe to the sub-group. Posts from the sub-group won't be shown to logged-out users by default either, so any logged-out users that want to observe will need to visit the sub-group directly (or you're welcome to email me and request an invite so you can register and subscribe).
I'll also be setting up scheduled posts to post automatically for each day's puzzle and possibly some other things, but we can discuss all of that inside the sub-group.
Edit: All of the topics have now been moved back into ~comp under the "advent of code.2019" tag, and the group deleted.