[swift-evolution] Optional comparison operators

[Chris Lattner]

> On Jul 11, 2016, at 8:14 PM, Jacob Bandes-Storch via swift-evolution <swift-evolution at swift.org> wrote:
> 
> You'd have to unwrap it, or use the ??/==/!= operators: https://gist.github.com/jtbandes/9d88cc83ceceb6c62f38 <https://gist.github.com/jtbandes/9d88cc83ceceb6c62f38>
> 
> I'd be okay with </<=/>/>= returning Bool?, as I suggested in an older email (which somehow didn't make it to gmane's archive, but it's quoted in some other messages <http://thread.gmane.org/gmane.comp.lang.swift.evolution/10095>). I think it would be more convenient in some cases than unwrapping the individual values before comparing them.

I’d be strongly opposed to those operator returning “Bool?”.  Doing so would prevent conforming to Comparable and would be extremely surprising.

-Chris

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