[swift-evolution] SR-104: Improve Crash-Safety when Importing Objective-C Code Without Nullability Attributes

[Andrey Tarantsov]

> (The other major feature that uses IUOs is two-phase initialization, like IBOutlets. I don't think we have an answer for that yet either.)

Other examples include stuff created in viewDidLoad of a view controller, and fields initialized in the second phase.

I love IUOs, I think they should stay in the interest of ! non-proliferation.

A.