[swift-evolution] [Review] SE-0102: Remove @noreturn attribute and introduce an empty NoReturn type

Charlie Monroe charlie at charliemonroe.net
Tue Jun 21 16:37:39 CDT 2016

> 	* What is your evaluation of the proposal?

-1. I am for introducting a bottom type, but when it will be of more use and can be more universally designed. To me it feels like a hot-fix for something that isn't broken rather than a step forward for the language itself.

> 	* Is the problem being addressed significant enough to warrant a change to Swift?


> 	* Does this proposal fit well with the feel and direction of Swift?

Not yet. Introducing a bottom type is a good idea, but I feel that Swift isn't there yet to design it well and universally.

> 	* If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?

Scala has Nothing and it's a true bottom type. In regards to this proposal, Scala's solution is superior.

> 	* How much effort did you put into your review? A glance, a quick reading, or an in-depth study?

Read of the proposal + discussion.

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> 	https://github.com/apple/swift-evolution/blob/master/process.md
> Thank you,
> -Chris Lattner
> Review Manager
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