Re: [swift-users] Is it possible to specify error type thrown in a protocol method

On balance I think I prefer result types. Java's fully typed throws and Swift's semi-typed throws are fine though. I can't see Swift supporting result types because they already have throws. -- Howard. > On 6 Jul 2017, at 4:27 pm, Tim Wang wrote: > > Thanks

Re: [swift-users] Is it possible to specify error type thrown in a protocol method

Thanks Howard, it's a good workaround. Do you think it would be better to be part of swift language feature? I wish swift team could consider this :) On Thu, Jul 6, 2017 at 11:04 AM Howard Lovatt wrote: > You could use a result type, e.g.: > >

Re: [swift-users] Is it possible to specify error type thrown in a protocol method

You could use a result type, e.g.: https://github.com/antitypical/Result Or roll your own result type. I think the reason that Swift doesn't support what you want is because of rethrows. When you declare a method as rethrows it can throw anything because the closure it is re-throwing can throw