You're right that IoC/Dependency injection pretty much define a framework -- that and ascii folder diagrams. IoC and other patterns are pretty common and well r

You're right that IoC/Dependency injection pretty much define a framework -- that and ascii folder diagrams. IoC and other patterns are pretty common and well regarded, but they are not features of the language. If you had a library using functional programming instead of an IoC framework you'd be closer to the "principles of abstraction that the programming language provides."