[mattgreenrocks]

I generally don't mind C++ for most code when it's absolutely necessary, but I'm not a huge fan of std::variant. Using std::visit to exhaustively match all cases feels hacky. It really would benefit from being a first-class language feature. It's more impactful to a lot of day-to-day code than other things they've worked on, such as coroutines.

[TheBicPen]

The 4th example at https://en.cppreference.com/w/cpp/utility/variant/visit that uses a class template makes the feature a bit nicer, but still not as ergonomic as something like Rust.