[swift-evolution] !? operator for ternary conditional unwrapping

[Adrian Zubarev]

If you need a infix operator that traps, here you have one ;)

infix operator ?! : NilCoalescingPrecedence

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

let x: Int? = nil  

let y: Int = x ?! fatalError("Your message here")


-- 
Adrian Zubarev
Sent with Airmail

Am 8. Februar 2017 um 16:00:24, Haravikk via swift-evolution (swift-evolution at swift.org) schrieb:

I say it's a bit of an odd operator since it doesn't actually trap.
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