[swift-evolution] Extending init checks for property initialization

[David Sweeris]

> On Apr 29, 2016, at 3:00 AM, Vladimir.S <svabox at gmail.com> wrote:
> 
> Can't see any significant extra overhead because of implicity unwrapped property for your code. Could you clarify?

It's probably not significant in UI code, but if you’re writing something that’ll be accessed a 100k or a 1M times in what should be a tight loop, it all adds up.

- Dave Sweeris