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A comment on The Next Step for Generics. Parent comment

Re:The Next Step for Generics by nurettin on Wednesday June 17, 2020 @04:52AM (#23549277)
This doesn't sound right. Could you paste an example of a misuse of optional (for example: an unchecked unwrap) causing a compilation failure instead of a panic?
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Re:The Next Step for Generics by jpttsn on Wednesday June 17, 2020 @01:11PM (#23553878)
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)

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Re:The Next Step for Generics by nurettin on Thursday June 18, 2020 @05:07AM (#23561236)
My 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??
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