scala3-aoc-2024

Here we go again: Advent of Code - 2024!

To make this work you need to run ...

./mill main.test
./mill main.run

Note: This time around the focus is on learning scala3 and using GitHub Copilot/emacs and Codeium/Windsurf as much as possible (as a pair programming buddy).

Note: Initially the (scala3) code was formatted with braces. Then I decided to switch to indent. To migrate the code I did run ./mill main.migrate.compile and made heavy use of scalafmt and scalafix.

Note: You can install a/the pre-push hook with ...

cd ./.git/hooks
ln -s ../../hook/pre-push .

The hook will make sure the code is properly formatted and linted before each push.

What I have learned?

• Lot's about Scala3 ...
  • extensions
  • given and using
  • indent vs. braces
  • ... and (much) more
• Using scalafmt (for Scala3)
• Using scalafix (for Scala3)
• Using breeze to solve linear equation systems
• Using scala-graph to find the shortest path in a graph (or 2-dim grid)
• Using scala-corner to count the number of corners of regions in a 2-dim grid
• Using Codeium and Windsurf to write code