> 4 Dec. 2017 03:54 Thorsten Seitz via swift-evolution > <swift-evolution@swift.org> wrote: > > The difference is that IUOs are marked by a "!“ whereas dynamic member > lookups look just like normal member lookups but unlike them can fail.
IUOs are not marked with an "!" by the caller, that's what makes them implicit. They *are* marked at the declaration, but so would dynamic member lookups be. /Magnus _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
