[swift-evolution] [Pitch] Typed throws

[Russ Bishop]

> On Feb 19, 2017, at 12:04 PM, Anton Zhilin via swift-evolution <swift-evolution at swift.org> wrote:
> 
> It’s expected that if you need resilience, then you will throw an “open” enum. Essentially, we pass resilience of typed throws on to those who will hopefully establish resilience of enums.
> 
You’ve just re-invented the error handling model we have today. 


> If you prefer separate error types, then declare a base protocol for all your error types and throw a protocol existential. 
> 
And now we’ve re-invented Java’s checked exceptions “throws Exception”. 


To what end?

Russ


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