jan kili (Dec 04 2024 at 06:27): jan kili (Dec 04 2024 at 06:27)::partying_face: https://gitlab.com/JanCVanB/aoc-2024/-/blob/main/day-04/part-1/main.roc
Luke Boswell (Dec 04 2024 at 06:28):I need to afk for a few hours... but figured I'd share my part 1 :smiley:
edit nvm part 2 was easy
https://github.com/lukewilliamboswell/aoc/blob/main/2024/04.roc
TIMING:
READING INPUT: <1ms
SOLVING PART 1: 49ms
SOLVING PART 2: 8ms
lol it seems rough from my approach
Oskar Hahn (Dec 04 2024 at 07:32):Here is mine: https://github.com/ostcar/aoc2024/blob/main/day04.roc
I used the array2d package. It uses backpassing, which results in my program to show warnings, that backpassing is deprecated.
Is there already a discussion, if warnings from dependent packages should be shown when compiling an application?
Ryan Barth (Dec 04 2024 at 07:49):It's so fun to see people's different styles. Here is mine for today.
https://github.com/r-bar/advent24/blob/master/day04/p2.roc
Ryan Barth (Dec 04 2024 at 07:55):I feel like I am starting to be able to pick out which roc code belongs to who from the people who have kept posting in here each day.
jan kili (Dec 04 2024 at 08:27):Dang, I finished writing my part 2 code a half hour ago but can't figure out why my non-example answer is wrong :/
Grrr. Oh well. Bedtime!
Anton (Dec 04 2024 at 10:21):Is there already a discussion, if warnings from dependent packages should be shown when compiling an application?
They should not, there is already on issue for it #6700
Nicola Peduzzi (Dec 04 2024 at 10:53):Part 1 done. I'm glad I did it with support functions now that I see part 2 :D hopefully now it should only be a composing thing
https://github.com/thenikso/advent-of-code-2024-roc/blob/main/04.roc
Anthony Bullard (Dec 04 2024 at 13:54):Those of you done already are either a) From the Eastern Hemisphere, or b) Very committed :smiley:
Robin Camarasa (Dec 04 2024 at 14:21):https://github.com/RobinCamarasa/Advent-of-code/blob/master/2024/day04/RobinCamarasa/main.roc . Really enjoying doing AOC in roc. I am not only understanding roc better but also get inspiration on how to make a smarter use of error as value in general. And this is 100% thanks to the great naming of the standard library functions :smile:
Anthony Bullard (Dec 04 2024 at 15:56):Loved part 1, will do part 2 after work
Asbjørn Olling (Dec 04 2024 at 18:13):https://gitlab.com/AsbjornOlling/aoc2024/-/blob/main/04/main.roc?ref_type=heads
Was going to do advent of code in python this year (all my friends are, and it's fun to compare)- but I got bored with it yesterday and switched back to Roc.
There sure is a lot of new stuff since I used Roc for aoc last year!
I managed to do todays without faffing with results too much, but I'd like to mess around with the ? operator soon.
The Array2D.subarray function sure was useful for part 2 today. It sucks with the backpassing deprecation warnings though. Maybe someone should try making a PR :thinking:
Anthony Bullard (Dec 04 2024 at 18:22):Couldn't wait. Was able to do part 2 over lunch:
https://github.com/gamebox/aoc-2024/blob/main/day4/puzzle1/main.roc
https://github.com/gamebox/aoc-2024/blob/main/day4/puzzle2/main.roc
Very fun exercise.
Luke Boswell (Dec 04 2024 at 19:12):It sucks with the backpassing deprecation warnings though. Maybe someone should try making a PR
I fixed it, I can make a PR
Luke Boswell (Dec 04 2024 at 19:17):@Elias Mulhall https://github.com/mulias/roc-array2d/pull/9
Elias Mulhall (Dec 04 2024 at 22:26):Okey dokey, https://github.com/mulias/roc-array2d/releases/tag/v0.3.1 should be warning free, and I updated the examples to run with roc nightly!
Isaac Van Doren (Dec 06 2024 at 05:18):https://github.com/isaacvando/aoc/blob/main/2024/4.roc
Eli Dowling (Dec 09 2024 at 06:07):https://github.com/faldor20/aoc-template/blob/purity-inference/examples/2024/04.roc FInally got mine done too.
I was super happy about part 1.
part 2 I just kind of threw together :sweat_smile:
Anton (Dec 10 2024 at 16:58):@Anthony Bullard asked for a recording of me using the Roc agent, so here it is:
aoc-2024-4-2024.mkv
I did not have to make any changes to the prompt so it was not very eventful :p
The sonnet 3.5 servers did get overloaded, so I switched to haiku but it made a copy paste error, later I was just able to switch back to sonnet. The bottom line of my terminal also got cut off, sorry about that.
Claude's solution:
main_claude.roc
Brendan Hansknecht (Dec 10 2024 at 17:09):Out of my own curiosity, can you have it do day nine and measure the perf?
Anton (Dec 10 2024 at 17:17):Yeah totally :) can I just use Luke's default aoc-template measurement?
Anton (Dec 10 2024 at 17:21):Also, should I measure with or without --optimize?
Brendan Hansknecht (Dec 10 2024 at 17:24):yes and with optimize
Last updated: Jul 26 2025 at 12:14 UTC