> • What is your evaluation of the proposal?

I think it's great! Enthusiastic +1 from me.

Just an idea -- in addition to `mapValues`, it seems like it would be useful to 
have both a `mapKeys` and plain `map` for key-value pairs. The proposal 
mentions that `map` was omitted because unique keys aren't guaranteed, but it 
seems reasonable to me to trap if duplicate keys are generated during a map, 
similar to how the proposed sequence-based initializer traps on duplicate keys.

I don't think those additions are critical, but they seem nice to me.

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

Yes -- I've struggled with several of the issues that the proposal addresses. 
The specialized map / filter, default subscript values, and merging are 
particularly appealing to me.

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

I think so, since Swift already goes to great lengths to provide a robust 
collection system. This is a logical iteration of that idea.

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

I don't recall any features I've used elsewhere that would be helpful to 
compare to.

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

I didn't follow any discussion that led to the proposal, but I read the whole 
thing.

Jarod

On Apr 5, 2017, 17:45 -0700, Ben Cohen via swift-evolution 
<[email protected]>, wrote:
> Hello, Swift community!
>
> The review of "SE-165: Dictionary & Set Enhancements" begins now and runs 
> through next Tuesday, April 11th. The proposal is available here:
> https://github.com/apple/swift-evolution/blob/master/proposals/0165-dict.md
>
> Reviews are an important part of the Swift evolution process. All reviews 
> should be sent to the swift-evolution mailing list at
> https://lists.swift.org/mailman/listinfo/swift-evolution
>
> or, if you would like to keep your feedback private, directly to the review 
> manager. When replying, please try to keep the proposal link at the top of 
> the message:
>
> Proposal link:  
> https://github.com/apple/swift-evolution/blob/master/proposals/0165-dict.md
>
> Reply text
>
> Other replies
>
> What goes into a review?
>
> The goal of the review process is to improve the proposal under review 
> through constructive criticism and, eventually, determine the direction of 
> Swift. When writing your review, here are some questions you might want to 
> answer in your review:
>
> • What is your evaluation of the proposal?
> • 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?
> • If you have used other languages or libraries with a similar feature, how 
> do you feel that this proposal compares to those?
> • How much effort did you put into your review? A glance, a quick reading, or 
> an in-depth study?
>
> More information about the Swift evolution process is available at 
> https://github.com/apple/swift-evolution/blob/master/process.md
>
> Thank you,
>
> Ben Cohen
> Review Manager
>
>
> _______________________________________________
> swift-evolution mailing list
> [email protected]
> https://lists.swift.org/mailman/listinfo/swift-evolution
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