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Advent2021

Guess who's back, back again

Watch me code in Haskell for 25 days straight

  • Day 1
  • Day 2
  • Day 3
  • Day 4
  • Day 5
  • Day 6
  • Day 7
  • Day 8
  • Day 9
  • Day 10
  • Day 11
  • Day 12
  • Day 13
  • Day 14
  • Day 15
  • Day 16
  • Day 17
  • Day 18
  • Day 19
  • Day 20
  • Day 21
  • Day 22
  • Day 23
  • Day 24
  • Day 25

Personnal Feedback

Day 1:

I am quite proud of my solution, I'm obviously just trying to show off here but it's fun. When I look back at my first solution last year, I feel like I've progressed quite a lot!

Day 2:

This one was easy, I am kind of disappointed that I couldn't do showy one-liners for the move function (I mean, I could with inline if-else I guess)

Day 3:

Okay this one was kind of a mess, the first part is pretty okay (I probably could have done something more optimised, but it works just fine), however I am totally unsatisfied by my second part. I think there has to be a way in Haskell to do what I want

Day 4:

Well, it may not be the most optimised, like I have to traverse the grid twice because I'm too lazy to do things better, but it works, it's readable and all, so yeah I'm kind of satisfied, oddly enough

Day 5:

This one was easy and pretty straightforward, I'm happy with my solution. I just wish I could mix both parts into one but I can't

Day 6:

This one was really fun. Of course I first I did the most naive solution, but then when I went onto part 2 I had to do a smarter one. Of course mine is still not that smart, because I can't modify an element of a list in-place I just decided to do a silly workaround, but it works and it's fine considering the size of the array

Day 7:

Okay I am really disappointed in myself for that one. I feel like there's a much better way of doing part 2, but I can't find it for now. I'm going to think a little bit more about it. Edit: Ok I am more satisfied now

Day 8:

THIS ONE WAS INCREDIBLY FUN! I am actually quite happy with my solution. Although some would find it ugly and whatnot, I believe it is actually a good solution as it manages to be both simple to understand (basically the only weird thing to understand is the head . filter thingies, because I didn't want to use find because it didn't make sense to have Maybe here in my opinion)

Day 9:

I came prepared with Data.Matrix ;D. I was waiting to use that one, and here it is! Also, I think I did a fricking DFS using foldl, didn't I?

Day 10:

This one was really easy. Too easy in fact, it was kind of boring :C I mean, it's just matching parenthesis all over again in the end

Day 11:

I was really scared about cellular automaton in Haskell because I had a very bad experience last year. Turns out this year I am rolling over them quite easily, good innit?

Day 12:

This wasn't too bad. Kind of had to create my own Graph implementation but I managed to do it so that's good. Not much fan of how I named parameters and functions here but hey, what can you do about that.

Day 13:

This one was really easy. I don't have much to say, Data.Matrix is still a blessing <3

Day 14:

This is day 6 all over again, albeit much uglier ono

Day 15:

This is just a Dijsktra thingy. There probably was some way to optimise part 2, but I'm far too lazy for that :d

Day 16:

May god have mercy on my soul, as I have sinned. My solution is horrible and I want to sleep. Oh lord what have I done, this is a mess, please help me

Day 17:

I am really disappointed here, all I did was bruteforce my way in. I hope there actually is a clever solution. I think there might be, by solving some equations and whatnot, but I am tired.

Day 18:

Explanations were unclear, and doing that in Haskell was a hustle. But I managed. I survived