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In Swift `let x = things.first` won't compile but `let x = things.first ?? "empty"` and `let x = things.first!` will. Does that count? (Probably mangled the Sw
by jpttsn 6y ago
In Swift `let x = things.first` won't compile but `let x = things.first ?? "empty"` and `let x = things.first!` will. Does that count?
(Probably mangled the Swift, doing this from memory)
- nurettin 6y agoMy swift isn't good, but since you didn't specify a type for x, I think it should compile anyway. But if things is an empty array of T, first may return nil and x will be of type T?. If things is an array of optional, x will be of type T??