> It is quite well studied and solved in various languages I wouldn't say the expression problem is "solved"; various languages pick different tradeoffs, but t

> It is quite well studied and solved in various languages I wouldn't say the expression problem is "solved"; various languages pick different tradeoffs, but the underlying problem is still there. The best description I've seen of this is at https://www.tedinski.com/2018/02/27/the-expression-problem.html https://www.tedinski.com/2018/02/27/the-expression-problem.h...