Re: [swift-users] Binary Operator '??' cannot be applied to operands of type 'T?' and 'Never'

[Adrian Zubarev via swift-users]

I’ve build a custom operator for this: 
https://gist.github.com/DevAndArtist/dad641ee833e60b02fd1db2dbb488c6a

infix operator ?! : NilCoalescingPrecedence

func ?!<T>(optional: T?, noreturn: @autoclosure () -> Never) -> T {
   switch optional {
   case .some(let value):
      return value
   case .none:
      noreturn()
   }
}

// Usage
let test: Int? = nil

test ?! fatalError("Message")


-- 
Adrian Zubarev
Sent with Airmail

Am 6. Oktober 2016 um 05:35:53, Jonathan Hull via swift-users 
(swift-users@swift.org) schrieb:

I used to be able to use ?? with fatalError(“Message”) to trap with a custom 
message in case of nil. This no longer works in Swift 3 (I think because of the 
update to never type)
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