> Also being able to create new types from existing ones with eg struct Years(i64); and pass it around typed is quite nice in Rust (F# has something similar, ho

> Also being able to create new types from existing ones with eg struct Years(i64); and pass it around typed is quite nice in Rust (F# has something similar, however there it will then always also be assignable to i64, so is not very helpful for catching incorrect usage. F# has units of measure which are quite a bit more powerful: https://learn.microsoft.com/en-us/dotnet/fsharp/language-reference/units-of-measure https://learn.microsoft.com/en-us/dotnet/fsharp/language-ref...