This is a nice new diagnostic in Swift 4.2pic.twitter.com/F7ZsTF2SKX
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I want this but for completion block exhaustiveness
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With functions that use async callbacks, verifying that the callback is always called. func doSomething(completion: (SomeData) -> Void) { if true { completion() } else { // oops! } }
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Gotcha. The troll in me just wants to say "use futures" ;)
End of conversation
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