[swift-users] still wrestling with a type conversion problem

[Jacob Bandes-Storch]

On Tue, Jul 4, 2017 at 7:21 AM, David Baraff <davidbaraff at gmail.com> wrote:

>
>     func decoded(_ input: Any) -> Set {
>         if let listVal = input as? [Set.Element] {
>             return Set(listVal)
>         }
>         return self
>     }
>
>
This looks a little weird — what is `self` here? It might be more
appropriate to use a `static func` or even a failable `init?`.
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