> On May 9, 2016, at 10:12 AM, Jacob Bandes-Storch <[email protected]> wrote:
> 
> Maybe I made a mistake when testing, but I thought I was able to convert a 
> negative Int to a large UInt by going through NSNumber (it didn't return nil 
> from the as? cast).

It's less bad if you're able to do this explicitly. It was the *implicit* 
conversion behavior we were concerned about.

-Joe

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