Latest #2023 Threads 
I came up with a solution myself, but it is not fast.
My first brute-force solution simply tried removing all combinations of three edg...
New
After looking up the formula for calculating an intersection of two lines on wikipedia, part 1 was straightforward. I really do not know ...
New
For part 2 I transformed the map into a graph because I wanted to see it and check if there was a bottleneck point or something.
But no,...
New
I went for a brute-force solution, implementing the most straight-forward algorithm I could think of. That initial implementation solved ...
New
So… that’s it? Everyone is stuck on part 2? :slight_smile: I looked at Reddit hints and thought I probably wouldn’t have come up with the...
New
This one lost me at the beginning, but after a little inspection of the input, there is a clear path to the answer.
Explainations in par...
New
A rather verbose solution but simple enough I guess.
New
I confess that I asked ChatGPT about the math. It gave me a name of an algorithm called the Shoelace formula. I still have to pay attenti...
New
Fairly straightforward Dijkstra’s algorithm
import AOC
aoc 2023, 17 do
def compute(input, candidates) do
{{max_row, max_col}, ite...
New
For Part 1, I was lazy and didn’t want to maintain variables and pass them down to each function (which would also involve merging two di...
New
This Week's Trending
This Month's Trending
This Year's Trending
Last Three Year's Trending
Nobody’s doing Advent of Code this year? :smile:
I might do the first week or so.
For Day 1, first I solved it using regular expression...
New
Setting this down for the night, as after a quick naive solve for quick part 1 I realize that part 2 is by design computationally expensi...
New
The second part of today’s puzzle is very misleading.
FYI, each of the ghosts has only one possible position that ends with a "Z" on its...
New
I tried to use combinatorial to solve today’s puzzles but failed (my brain burned out :exploding_head:). In the end I just used brute for...
New
I spent 3 hours struggling in part 2, until I noticed a very basic mistake :joy:
Here’s my code:
By the way, the starting position in...
New
Thought I’d kick today’s thread off!
Parsing
Enum rocks, so most of my code was actually in parsing input.
▶ Preprocessing input
Part 1...
New
Don’t know why the regex ~r/[\W && [^\.]]/x does not work in Elixir. It works pretty well in Ruby.
Anyway, here is my solution:
New
I mapped both the cards and every possible hand to numeric values and sorted them. In part 2 I could only think of replacing the jokers w...
New
Hello all, hopefully I post this before someone else does and I don’t dupe.
IMO Day 4 was much easier than Day 3 (yay, I can sleep befor...
New
So… that’s it? Everyone is stuck on part 2? :slight_smile: I looked at Reddit hints and thought I probably wouldn’t have come up with the...
New
My solution finishes both parts in 5 seconds on my computer. That time should be possible to reduce by optimizing my rather naive tilt/2 ...
New
This was way too easy after the last few days. Simple map, filter and count.
New
Fairly straightforward Dijkstra’s algorithm
import AOC
aoc 2023, 17 do
def compute(input, candidates) do
{{max_row, max_col}, ite...
New
I confess that I asked ChatGPT about the math. It gave me a name of an algorithm called the Shoelace formula. I still have to pay attenti...
New
For Part 1, I was lazy and didn’t want to maintain variables and pass them down to each function (which would also involve merging two di...
New
Trending Over Three Years
Code BEAM Europe - the Erlang and Elixir Conference is an event built on the long-standing legacy of the Erlang User Conferences. An even...
New
This one lost me at the beginning, but after a little inspection of the input, there is a clear path to the answer.
Explainations in par...
New
New
A rather verbose solution but simple enough I guess.
New
After looking up the formula for calculating an intersection of two lines on wikipedia, part 1 was straightforward. I really do not know ...
New
My code for today’s puzzle:
New
Fun day today! Quite straightforward but the key observations are:
SpoilersFinding the column-wise reflection line is the same as transp...
New
I came up with a solution myself, but it is not fast.
My first brute-force solution simply tried removing all combinations of three edg...
New
Hey everyone!
FOSDEM 2023 is finally going to be in-person again and we’re excited to announce that the Erlang, Elixir and Friends Devro...
New
Hello, community.
SpawnFest 2023 will happen on Oct 28 & 29.
What is it?
SpawnFest is an annual 48 hour online software developmen...
New
For part 2 I transformed the map into a graph because I wanted to see it and check if there was a bottleneck point or something.
But no,...
New
VEB sold out in record time, so Early Bird tickets are now on sale! We want to thank you all for your excitement about this year’s Elixi...
New
Code BEAM Lite México :mexico: will be taking place March next year in Mexico City.
If you have something to share to the erlang, elixir...
New
I went for a brute-force solution, implementing the most straight-forward algorithm I could think of. That initial implementation solved ...
New
Got top 1000 for part 1, part 2 was super long so I took a while to understand it. Pretty fun day overall!
New
Latest on Elixir Forum
Get money off!
The Pragmatic Bookshelf
35% off any eBook
Manning Publications
45% off any item
ElixirCasts
10% off for life
The Pragmatic Studio
20% off any course
AppSignal
10% off for 12 months
Honeybadger
10% off for 12 months
Simply use coupon code "devtalk.com" or "elixirforum" at checkout!
Filter by Type:
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #channels
- #exunit
- #elixirconf
- #discussion
- #javascript
- #podcasts
- #code-sync
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixir-ls
- #phoenix_html
- #iex
- #blog-post
- #graphql
- #genstage
- #ai
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #api
- #processes
- #forms
- #metaprogramming
- #security
- #performance
- #hex
Forums
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Practical resources that improve the lives of professional developers.
Develop your skills with books, videos, and courses.
The deployment platform built for Elixir: PaaS ease, VPS control.
Courses that'll move you from confusion to "Aha, now I get it!"