Sadly, Kotlin, a language I otherwise like a lot, decided that Java generics were too complicated for normal people, and created a much less flexible version. For the typical case the syntax is easier to understand, but it's not possible to use the full power of the Java syntax.
What I'm saying is that the reason for this simplification is the same as the reason not many people use intersection types.
I am getting an undismissable dialog prompting for an email address to spam. Is there supposed to be a way of closing it or is that website just that hostile?
sorry about that -- fixing it now. Just press escape or click in the menu "Java articles" and it will disappear
That fixed it, thanks. You already provide a way to subscribe at the bottom of the page though, and I would expect users only to consider subscribing after reading the article and finding it interesting; why not dispense with the dialog altogether? It is the kind of trick used by scam websites and annoys most users.