[swift-evolution] [Proposal] Remove Boolean

[Chris Lattner]

> On Jun 23, 2016, at 3:38 PM, Jordan Rose via swift-evolution <swift-evolution at swift.org> wrote:
> 
> It does abstract over DarwinBoolean as well, but this still seems reasonable to me. The most common cases to encounter ObjCBool and DarwinBoolean are out-parameters (which you are usually setting rather than reading, and they will remain BooleanLiteralConvertible) and imported struct fields (which are fairly rare). And John McCall has some ideas for how to even eliminate the latter, though I think that can be separated from this proposal.

Right.

-Chris