You mention `.unwrap()`. This might be a good time to mention a previous discussion of an `Unwrappable` protocol that provides biased unwrapping and can extend unwrapping syntax to non-Optional types:
https://gist.github.com/erica/aea6a1c55e9e92f843f92e2b16879b0f <https://gist.github.com/erica/aea6a1c55e9e92f843f92e2b16879b0f> -- E > On Nov 2, 2017, at 6:02 PM, Xiaodi Wu via swift-evolution > <swift-evolution@swift.org> wrote: > > This is clearly a fine addition to the standard library; even Swift's Error > Handling Rationale > (https://github.com/apple/swift/blob/master/docs/ErrorHandlingRationale.rst > <https://github.com/apple/swift/blob/master/docs/ErrorHandlingRationale.rst>) > mentions such an addition > > What separates standard library types from other types is that they have > language level support, and the wrapping and unwrapping syntax here could > definitely benefit from it (`.unwrap()`--which should be `.unwrapped()` > incidentally--is so much less elegant in comparison to `?` and `!` for > optionals (not that `Result` should use the exact such syntax for a distinct > operation)). It would be a shame to transpose a third-party `Result` to the > standard library without considering if any such tweaks would substantially > improve ergonomics, interconversion with Optional and throws, etc. > > > On Thu, Nov 2, 2017 at 1:08 PM, Jon Shier via swift-evolution > <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote: > Swift-Evolution: > I’ve written a first draft of a proposal to add Result<T> to the > standard library by directly porting the Result<T> type used in Alamofire to > the standard library. I’d be happy to implement it (type and tests for free!) > if someone could point me to the right place to do so. I’m not including it > directly in this email, since it includes the full implementation and is > therefore quite long. (Discourse, please!) > > https://github.com/jshier/swift-evolution/blob/master/proposals/0187-add-result-to-the-standard-library.md > > <https://github.com/jshier/swift-evolution/blob/master/proposals/0187-add-result-to-the-standard-library.md> > > > Thanks, > > Jon Shier > > > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org <mailto:swift-evolution@swift.org> > https://lists.swift.org/mailman/listinfo/swift-evolution > <https://lists.swift.org/mailman/listinfo/swift-evolution> > > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution
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