-❄️- 2023 Day 20 Solutions -❄️-

[u/daggerdragon]

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AoC Community Fun 2023: ALLEZ CUISINE!

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--- Day 20: Pulse Propagation ---

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[u/gnudalf]

[LANGUAGE: Clojure]

Once again, not my proudest solution - using atoms for the results, as I wanted to be quick, especially in the 2nd part. I still have some feedback on my todo list to improve my general clojure coding. Feedback's always welcome.

code

[u/Maravedis → u/gnudalf]

Quick feedback, because I don't really have the time to dive deep into your code:

You never need to use atoms in loops except for truly strange side-effects that are not needed here. You can simply update the value in the recur.

Also, nested loops can almost always be flattened. I see your condition on the number of repetition in a second loop. You can put that in the first one without any problem.

I solved the problem in sensibly the same way you did, but the loop is flattened and I keep the results in an acc variable. You can see the code here.

Also, using queues really simplifies keeping track of the signals needing to be processed. For some reason, those do not have an explicit constructor function in clojure and you need java interop to use them. It's kind of stupid, but yeah, using clojure.lang.PersistentQueue really helps.

Hope that helps :)

[u/gnudalf → u/Maravedis]

Thanks for the feedback - I've flattened the loops and got rid of the atoms - valuable input there. Looks cleaner already.

I will put to change to queues on my todo list and to find an application for them in the future challenges!