> What is your evaluation of the proposal? +0.9 The core of the proposal is unquestionably necessary to correct a serious deficiency in the expressivity of the type system, but I take issue with the arbitrary limitation of requiring the concrete type to be first and would give a full +1 to the core team accepting with the modification of removing that limitation.
> Is the problem being addressed significant enough to warrant a change to > Swift? Definitely. I’ve run into the issue this would solve several times in real-world applications. > Does this proposal fit well with the feel and direction of Swift? Yes > If you have used other languages or libraries with a similar feature, how do > you feel that this proposal compares to those? Basically a direct translation of the objc feature. > How much effort did you put into your review? A glance, a quick reading, or > an in-depth study? Followed and to some extent participated in the discussion, relatively quick read of the final proposal.
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