See earlier editions:

• 2021
• 2022

The Scala Advent of Code website contains:

• some explanation of our solutions to Advent of Code (adventofcode.com)
• more solutions from the community

We use Visual Studio Code with Metals to write Scala code, and scala-cli to compile and run it.

You can follow these steps to set up your environement.

After you clone the repository, open a terminal and run:

$ cd scala-advent-of-code
$ scala-cli setup-ide 2023
$ code 2023

code 2023 will open Visual Studio Code and start Metals. If not you may have to go to the Metals pane and click the button labelled "Start Metals".

When you navigate to a file, e.g. 2023/src/day01.scala metals should index the project, and then display code lenses above each of the main methods part1 and part2, as shown in this image:

You can click run to see the results of the program run in VS Code. Or debug, which will let you pause on breakpoints, and execute expressions in the debug console.

In a terminal you can run:

$ scala-cli 2023 -M day01.part1
Compiling project (Scala 3.x.y, JVM)
Compiled project (Scala 3.x.y, JVM)
The solution is 64929

Or, to run another solution:

$ scala-cli 2023 -M <dayX>.<partX>

By default the solution programs run on our input files which are stored in the 2023/input folder. To get your solutions you can change the content of those files in the 2023/input folder.