> On 28 Jun 2017, at 17:41, Ben Cohen <ben_co...@apple.com> wrote: > > >> On Jun 28, 2017, at 8:27 AM, David Hart via swift-evolution >> <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote: >> >> Count me in as a strong proponent of ?? () -> Never. We don't need to burden >> the language with an extra operator just for that. > > You could say the same about ??
I have more difficulties saying the same for ?? as it provides a lot of value: a RHS Optional override and potentially a RHS Never closure override which would allow us to customise what happens before trapping. On the other hand, the !! operator, while useful, only provides a trapping behaviour with no way tu customise it. > The concern that an additional operator (and one that, IMO, fits well into > existing patterns) is so burdensome seems way overweighted in this discussion > IMO. > > Adding the operator, and encouraging its use, will help foster better > understanding of optionals and legitimate use of force-unwrapping in a way > that I don’t think `?? fatalError` could.
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