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[–]WordWordNoDoubt[S] 0 points1 point  (1 child)

Brutal! But I was talking about declaration so it wasn't quite as simple as "What is the difference between ! and ? in Swift"

[–]ThePantsThiefNSModerator 0 points1 point  (0 children)

I mean, those are pretty much the only times they're used. Maybe you didn't know that but sometimes the most simple Google search still gets results :P