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Re:Advent of Code 2019 by jodrellblank on Friday November 29, 2019 @02:34AM (#21662753)
I should have linked the Reddit: https://old.reddit.com/r/adventofcode/

and see on the sidebar on the right in desktop view, the "Solution Megathreads" e.g. from Day 5 last year there is https://www.reddit.com/r/adventofcode/comments/a3912m/2018_d... with tons of solutions including more oddball ones like VimScript, less popular like Common Lisp and APL, and lots of people use it as an excuse to learn/use a new language, so plenty of Python, Kotlin, Rust, C#, GoLang, D, and so on.

As the days go on, the challenge difficulty increases quite a lot (not linearly) so the threads often turn to discussions about performance, mini-competitions between people, tips on complexity, different approaches and debugging, etc.

Re:Advent of Code 2019 by gerikson on Friday November 29, 2019 @04:21AM (#21663174)
The subreddit is pretty great. Tons of good discussion, feedback in the (very rare) cases when something's pear-shaped about the day's puzzle, and a helpful vibe.