this post was submitted on 02 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
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console.log('Hello World')
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heh, recompiling the regex was wasting 80% of my time :D
Every so often I look for a library that will compile the regex at compile time - iirc, there's some stuff needing to made const fn before that can happen.
Last time I used regex, lazy_static was the way to go; I assume that regex can go in OnceCell nowadays.
I just passed it around, felt easier and rust-like. Compile time would be nice, but I have a vague feeling this would be too restrictive for some regexes/engines?
Maybe? There's some deep wizardry shown in some people's macros so a regex feels fairly basic in comparison.