[mpweiher]

> I never said that Swift invented these language features;

Hmm...not sure how else to interpret "upgrade to OO programming with use of protocols" other than that there was an upgrade to OO, and that upgrade was with the use of protocols. Now it looks like you meant an upgrade of the way protocols are used in OO, but you won't say how they Swift's protocols actually constitute an upgrade.

OK. ¯\_(ツ)_/¯

[Grustaf]

Protocols replace many uses of OO from objc, making code much easier to understand. In addition, swift protocols are much more powerful in almost every way.