Advent of Code 2022 is nigh • Hacker News Board

Re: Advent of Code 2022 is nigh

#71

Post by [deleted] » Thu, Dec 01, 2022, 6:40 AM UTC

tomberek wrote: post #20

b5n wrote: post #15

Elixir ended up being a great choice last year. I contemplated using ocaml, sbcl, or guile this go round but ultimately decided to see how far I can get with awk. I'm feeling confident I can get by with awk using getline as needed, we'll see how long I endure... Best of luck to everyone!

Yes! I did two years in awk ( https://github.com/tomberek/advent ) and loved the ability to dig in and truly grok the language. The performance wasn’t bad, but the multidimensional array support and ergonomics were…meh. I’m contemplating Elixir.

[deleted]

Re: Advent of Code 2022 is nigh

#72

Post by marshmallowmad » Thu, Dec 01, 2022, 6:50 AM UTC

First day was a pretty fun start. Just heard about this for the first time this year and going to give it a go.

Tangential question - why does the HN crowd hate these types of questions in interviews but apparently likes to do them on their own time? Different folks answering to different posts? Honestly curious.

Re: Advent of Code 2022 is nigh

#73

Post by reducesuffering » Thu, Dec 01, 2022, 6:51 AM UTC

pedrosorio wrote: post #58

Jtsummers wrote: post #49

Earlier quoted context omitted.

1. Have everything in place at the start (a script to grab the inputs helps). 2. Use a language that makes the edit/run cycle short. 3. Be very familiar with that language and how to process input in it. 4. Have solved many similar problems in the past so you can parse these problem statements quickly. 5. Have solved many similar problems in the past so you know exactly what code to write or use (if you have a utilit…

“Have solved many similar problems in the past so you can parse these problem statements quickly” This sounds like an advent of code specific thing. The problem itself is trivial, no need to have solved anything similar in the past, but the description is so verbose (because it’s a cute Santa-related story) that it becomes hard to parse the problem we’re trying to solve, quickly. I don’t think this is common in any o…

You only need to read the bolded white words to have a very educated guess (5 second skim; it's intentional)

Re: Advent of Code 2022 is nigh

#74

Post by reducesuffering » Thu, Dec 01, 2022, 6:53 AM UTC

PSA for anyone that doesn't like the verbosity: the bolded white words are the key info.

Here's how today's #1 did it (day 1 solution SPOILER): https://youtu.be/Vl1w7kWRtDg?t=144

Re: Advent of Code 2022 is nigh

#75

Post by saagarjha » Thu, Dec 01, 2022, 6:57 AM UTC

marshmallowmad wrote: post #72

First day was a pretty fun start. Just heard about this for the first time this year and going to give it a go. Tangential question - why does the HN crowd hate these types of questions in interviews but apparently likes to do them on their own time? Different folks answering to different posts? Honestly curious.

It's optional in this context.

Re: Advent of Code 2022 is nigh

#76

Post by yakshaving_jgt » Thu, Dec 01, 2022, 7:23 AM UTC

discmonkey wrote: post #16

Time for my yearly tradition of making it to day 4 in Haskell and feeling very smart before completely giving up on the first hard problem that needs regular arrays :)

At that point, reach for regular arrays in Haskell :)

Re: Advent of Code 2022 is nigh

#77

Post by MrJohz » Thu, Dec 01, 2022, 7:24 AM UTC

jinwoo68 wrote: post #23

discmonkey wrote: post #16

Time for my yearly tradition of making it to day 4 in Haskell and feeling very smart before completely giving up on the first hard problem that needs regular arrays :)

Try Ocaml instead :)

I tried that last year, and got worn down by how often I'd Google how to do something and get an answer explaining how recursion works from first principles as opposed to just pointing at the deciding standard library function that did what I needed.

I want to try again this year, do you have any advice for how to get going with Ocaml as someone who has programmed long enough to understand how recursion, linked lists, and all that jazz works, and just wants to figure out how to be productive in the language?

Re: Advent of Code 2022 is nigh

#78

Post by mikewarot » Thu, Dec 01, 2022, 7:31 AM UTC

I'm doing it in Lazarus/Free Pascal again.

https://github.com/mikewarot/Advent_of_Code_in_Pascal

Re: Advent of Code 2022 is nigh

#79

Post by warkanlock » Thu, Dec 01, 2022, 7:31 AM UTC

matsemann wrote: post #44

I wonder how the persons on the leader board manages it? First person today solved part1 after 39 seoncds, and was done with part2 after 53 seconds! I felt I was quite fast in being done with part1 after 3 minutes and part2 in 4 minutes (rank ~1000). I even tried to skimread the explanation to be fast, have a script to download the input and run it etc., but still no match!

Do you want to be fast, or do you just want to have fun?

Who cares what others do with the game? Have fun while doing it

Re: Advent of Code 2022 is nigh

#80

Post by bmitc » Thu, Dec 01, 2022, 7:39 AM UTC

MrJohz wrote: post #77

jinwoo68 wrote: post #23

Earlier quoted context omitted.

Try Ocaml instead :)

I tried that last year, and got worn down by how often I'd Google how to do something and get an answer explaining how recursion works from first principles as opposed to just pointing at the deciding standard library function that did what I needed. I want to try again this year, do you have any advice for how to get going with Ocaml as someone who has programmed long enough to understand how recursion, linked lists…

I’d recommend using F# maybe. Easier cross-platform story and well documented in the F# guide and reference.

Guide: https://learn.microsoft.com/en-us/dotnet/fsharp/language-ref...

Reference: https://fsharp.github.io/fsharp-core-docs/

Also you can use F# notebooks with .NET Interactive and the Polyglot Notebooks Visual Studio Code extension, which is great for something like Advent of Code.