[swift-evolution] Proposal: An assignment operator := that ensures nil before assignment.

[Stephen Celis]

> On Feb 27, 2016, at 10:38 AM, Amir Michail <a.michail at me.com> wrote:
> 
> I think this := would be used so often that it should be part of the language/standard library.

Would you please justify this? Would you please answer the questions from my reply?

Stephen