[swift-evolution] [Proposal] Remove force unwrapping in function signature.

[William Jon Shipley]

On Jun 30, 2016, at 9:22 AM, Saagar Jha via swift-evolution <swift-evolution at swift.org> wrote:
> When I see an IUO property, I consider it a sort of “contract”–it’s basically saying something like “I can’t set this to a valid value right now, but by the time you use it I promise that it’s non nil”

You might say that an IUO is sort of an IOU?

-W
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