See https://adventofcode.com/2022

One folder per day.

See https://adventofcode.com/2023

Five days per folder, with one solution (but not all days/parts use F# projects, but rather FSI).

Release run:

dotnet fsi <file.fsx> <args>

Debug run, with DEBUG defined (so assert is executed):

dotnet fsi --debug+ --define:DEBUG <file.fsx> <args>

dotnet new sln -o <folder>

will create

./name/name.sln

(folder can, of course, be renamed). Also use -n <sln-name> to explicitly name the solution file, otherwise output (-o) folder name is used.

dotnet new console -lang "f#" -o <name>

will create

./name/name.fsproj
./name/program.fs

and add to the solution (current folder must be that of the solution file, or need to specify the solution file):

dotnet sln add <path-to-fsproj>

If there are any folders, beyond the one containing the project file, they are added to the solution as solution folders, alternately:

dotnet sln <sln-file> add <path-to-fsproj>