[swift-evolution] Proposal: x == 2 should not be a valid statement

[Jonathan Tang]

On Thu, Feb 11, 2016 at 3:32 PM, Amir Michail via swift-evolution <
swift-evolution at swift.org> wrote:

> It’s too easy to accidentally write “x==2” instead of “x=2”.
>
> I don’t think something like “x==2” should be a valid statement.
>

I'd love to see this become a compiler warning.  Unsure about making it an
error; how would it affect implicit return from lambdas?
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