Comment by bsamuels

Unit annotation is F#'s secret killer feature.

I did a small video game in F# using unit annotation and was shocked at the number of bugs that unit annotation picks up at compile time.

If you work with a lot of unit conversions (pixels, inches, whatever), I highly recommend giving F# a shot on a small project.

Unit annotation + access to the .NET ecosystem has made this language a personal favorite for any project heavy with numbers.