[karmakaze]

One of the great ways of avoiding bugs is to make invalid states unrepresentable. An easy win is to use sum types for the various different flavours of a valid input parameter. The verbosity of having to manually create classes, wrap/unwrap rather than defining at-hoc in-place, and pattern matching leaves it in still the not modern camp, among other things.

[myvoiceismypass]

On making illegal states unrepresentable - this was my favorite post on that topic: https://fsharpforfunandprofit.com/posts/designing-with-types... (I don’t even write F# myself)