Advent Of Code

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An unofficial home for the advent of code community on programming.dev!

Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.

AoC 2023

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🦌 - 2023 DAY 9 SOLUTIONS -🦌 (programming.dev)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

26 comments fedilink hide all child comments

Day 9: Mirage Maintenance

Megathread guidelines

Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
Code block support is not fully rolled out yet but likely will be in the middle of the event. Try to share solutions as both code blocks and using something such as https://topaz.github.io/paste/ , pastebin, or github (code blocks to future proof it for when 0.19 comes out and since code blocks currently function in some apps and some instances as well if they are running a 0.19 beta)

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What is this?: Here is a post with a large amount of details: https://programming.dev/post/6637268
Where do I participate?: https://adventofcode.com/
Is there a leaderboard for the community?: We have a programming.dev leaderboard with the info on how to join in this post: https://programming.dev/post/6631465

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[–] [email protected] 4 points 11 months ago* (last edited 11 months ago) (1 children)

Rank 148!! Even beat Leo Uino today!

Optimized: https://codeberg.org/Sekoia/adventofcode/src/branch/main/src/y2023/day9.rs

Less optimized, though not quite my initial version: https://codeberg.org/Sekoia/adventofcode/commit/72dfd77b92518aefd9dbe3e661885528f737f861

[–] [email protected] 2 points 11 months ago (2 children)

how in the world are you getting top 1k with rust? sheesh!

[–] [email protected] 3 points 11 months ago

I guess I'll have to take rustaceans who claim they're more productive in rust than python seriously now

[–] [email protected] 3 points 11 months ago

Setting up boilerplate beforehand, I only need to fill in the functions (and the return types)
Really good parsing library (aoc_parse). Today my entire parsing code was parser!(lines(repeat_sep(i64, " ")))
Iterators! Actually really ideal for AoC, where pipelines of data are really common. Today both the main part (sum of lines) and inner part (getting a vec of differences) can be done pretty easily through iterators

Today was pretty ideal for my setup. In general I think Rust is really good for later days, because the safety and explicitness make small mistakes rarer (like if you get an element from a HashMap that doesn't exist, you don't get a None later down the road (unless you want it, in which case it's explicit), you get an exception where it happened.

I just really like Rust :3