"The expression problem matrix … In object-oriented languages, it's easy to add new types but difficult to add new operations … Whereas in functional languages,

"The expression problem matrix … In object-oriented languages, it's easy to add new types but difficult to add new operations … Whereas in functional languages, it's easy to add new operations but difficult to add new types" https://eli.thegreenplace.net/2016/the-expression-problem-and-its-solutions/ https://eli.thegreenplace.net/2016/the-expression-problem-an...