public NSArray<RRSCalendarEvent> workshopEvents() {
return (NSArray<RRSCalendarEvent>)workshops();;
}
This is really not a safe cast to make, because generic types aren't
covariant, NSArray<WorkshopMaster> does not "extend"
NSArray<RSSCalendarEvent>, because there's no runtime type information
to guarantee the type-safety like there is for Arrays (which do have
covariance). For arrays, if you do RSSCalendarEvent[] events = new
WorkshopMaster[1]; and you try to assign some other subclass of
RSSCalendarEvent to the array, you'll get a runtime exception (i think
an ArrayStore maybe? might be a ClassCast, but I think it's
ArrayStore), because the Java type system carries around that it's
ACTUALLY a WorkshopMaster array even though you are just "calling it"
an RSSCalendarEvent[]. But for generics, there is no runtime type for
generics, so it can't perform this check. Even the bounded type is
sort of sketchy in this particular case, because it has some of the
same semantic problems, but it should prevent the compiler complaint.
ms
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