[swift-evolution] [Review] SE-0069: Mutability and Foundation Value Types

[David Hart]

> 	* What is your evaluation of the proposal?

+1 I’ve always been bothered with the idea of Foundation becoming a first-class cross-platform library while breaking the core principles of Swift promoting value types. I’m extremely happen with this proposal.

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

Yes it is. Foundation is the *foundation* which cross-platform Swift libraries will be built for years to come.

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

It is more consistent with the direction of Swift.

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

Not really.

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

A complete read.

> More information about the Swift evolution process is available at
> 
> 	https://github.com/apple/swift-evolution/blob/master/process.md
> 
> Thank you,
> 
> -Chris Lattner
> Review Manager
> 
> 
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