this post was submitted on 10 Dec 2025
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Advent Of Code
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An unofficial home for the advent of code community on programming.dev! Other challenges are also welcome!
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.
Everybody Codes is another collection of programming puzzles with seasonal events.
EC 2025
AoC 2025
Solution Threads
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 |
Rules/Guidelines
- Follow the programming.dev instance rules
- Keep all content related to advent of code in some way
- If what youre posting relates to a day, put in brackets the year and then day number in front of the post title (e.g. [2024 Day 10])
- When an event is running, keep solutions in the solution megathread to avoid the community getting spammed with posts
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console.log('Hello World')
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I was leaning on chatgpt for z3 rust code, and it was terrible. It kept generating code for an old version of the library, but I had no idea which one. Tried to correct it and it starts hallucinating library "features".
Really need better docs for z3 rust.
I think I got pretty lucky that the Java library I used was pretty straightforward and had good docs.
This was definitely an unfulfilling way to solve a puzzle. I did take linear algebra in college, but I really struggled in that class and retained none of it.