Sather was a very interesting example of a language that is very much "OO is the way" design, but which cleanly separates composition and inheritance: https://

Sather was a very interesting example of a language that is very much "OO is the way" design, but which cleanly separates composition and inheritance: https://www.gnu.org/software/sather/docs-1.2/tutorial/inclusion.html https://www.gnu.org/software/sather/docs-1.2/tutorial/inclus... https://www.gnu.org/software/sather/docs-1.2/tutorial/abstract1259.html https://www.gnu.org/software/sather/docs-1.2/tutorial/abstra...