[maleldil]

See the first IpAddr example here[1], where you have separate variants, both with string representations. You can't do this with std::variant. You have to use separate types.

[1] https://doc.rust-lang.org/book/ch06-01-defining-an-enum.html

[sebtron]

I see what you mean now, thanks. To reproduce that example with std::variant I would need some kind of strong type alias, which as far as I know is missing from C++; so the only feasible way to do that would be wrapping the string in another class or struct.