[swift-evolution] [Accepted] SE-0072: Fully eliminate implicit bridging conversions from Swift

[Joe Groff]

> On May 9, 2016, at 10:12 AM, Jacob Bandes-Storch <jtbandes at gmail.com> 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