[swift-evolution] [Draft] Dictionary & Set Enhancements

Jason Gregori jasongregori at gmail.com
Sat Apr 1 11:01:27 CDT 2017

I really like the merging methods and have already needed to write my own.
Zach, do you mind showing a comparison of what you're thinking?

Nate, do you mind throwing this up in a gist or something? My email client
isn't letting me see the whole thing.


On Fri, Mar 31, 2017 at 11:52 AM Zach Waldowski via swift-evolution <
swift-evolution at swift.org> wrote:

> Snipped quoted proposal so as to not break the mailing list… By and large,
> I'm in favor. I like the potential for bringing up Dictionary and Set up to
> the implementation quality of Array and String.
> I don't think `init(merging:resolvingCollisionsWith:)` et al hold their
> weight for inclusion in the language, unless some notable optimization
> opportunity can be surfaced out of it. Users frustrated at the lack of a
> `merge` in Swift want it to be opinionated and "just do the right thing,"
> i.e., the same way as whatever other language they most recently used. A
> properly annotated and indented-to-be-beautiful use of the closure-based
> version will take up the same amount of code as doing the merge by hand
> with your custom condition.
> Sincerely,
>   Zachary Waldowski
>   zach at waldowski.me
> _______________________________________________
> swift-evolution mailing list
> swift-evolution at swift.org
> https://lists.swift.org/mailman/listinfo/swift-evolution
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