#adventofcodeunison — Public Fediverse posts

Advent of Code in Unison, Day 7

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/terms/day07/README

This was _much_ smoother than day 6 for me. The solid block of characters made for an easy parser and the data structure I used for part 1 transitioned nicely into part 2.

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Advent of Code in Unison, Day 6

I made bad choices (or got unlucky) with my parser for this one and had to re-work it substantially for part 2, which is a shame because the parsing is the hard part on this one.

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/terms/day06/README

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A hair late, but here's Advent of Code in Unison, Day 5!

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/namespaces/day05

Range overlap ends up being pretty straightforward in Unison. I ended up implementing most of part 2 as a premature optimization for part 1. Take THAT Donny Knuth. 😛

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Advent of Code in Unison, Day 4!

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/terms/day04/README

Grid based puzzles are always a good time. My favourite trick for these is to use an associative data structure for the board instead of a nested array (shout out to _Clojure Programming_ for teaching me that trick).

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Day03 of Advent of Code: the return of Joltage!

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/terms/day03/README

A few hurdles dealing with List functions, but otherwise a pretty straightforward puzzle.

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Another day, another Advent of Code puzzle.

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/terms/day02/README

Nothing terribly complicated here, though I did use streams instead of lists to avoid blowing up memory.

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Day 1 of Advent of Code in Unison down!

https://share.unison-lang.org/@nathanielknight/aoc2025/code/main/latest/namespaces/day01

I feel like there might be a more elegant solution to Part2, but it's late and I'm biking both kids to school tomorrow, so this'll have to do for now.

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It's Advent of Code time again and I'm getting ready!

https://natknight.xyz/preparing-for-aoc-2025-with-unison

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