> On 21 Jul 2017, at 02:01, Xiaodi Wu via swift-evolution
> <[email protected]> wrote:
>
> Hi Howard,
>
> The removal of BitwiseOperations is not under review here; that, like
> signum(), has been considered twice and approved twice, and has not been
> revised.
>
> On Thu, Jul 20, 2017 at 19:36 Howard Lovatt via swift-evolution
> <[email protected] <mailto:[email protected]>> wrote:
> The revised version of the proposal can be found here:
> https://github.com/apple/swift-evolution/blob/master/proposals/0104-improved-integers.md
>
> <https://github.com/apple/swift-evolution/blob/master/proposals/0104-improved-integers.md>
>
> • What is your evaluation of the proposal?
>
> Overall +1. Two reservations:
>
> 1. Functions like `signum()` that return a property would read better as a
> property!
> 2. I have found `BitwiseOperations` useful as an extension to both Bool and
> Set and for a custom set type. Therefore would prefer its retention and even
> more preferably that Bool and Set implement it.
>
> • Is the problem being addressed significant enough to warrant a change
> to Swift?
>
> Yes, generic representation of integers is useful.
>
> • Does this proposal fit well with the feel and direction of Swift?
>
> Yes, particularly the re-arrangment of the protocol hierarchy is in keeping
> with the rest of the restructuring of the standard library.
>
> • If you have used other languages or libraries with a similar feature,
> how do you feel that this proposal compares to those?
>
> Yes, many languages I use allow generic numeric functions to be written and I
> write my own numeric functions and will therefore use these protocols.
>
> • How much effort did you put into your review? A glance, a quick
> reading, or an in-depth study?
>
> Quick read, but have pulled my hair out trying to write generic stuff in
> Swift as it stands now.
I agree with Howard on both points; In particular I've never agreed with the
removal of BitwiseOperations, and believe it to be a mistake. What's the point
of making Integers more protocol-oriented if you then go about getting rid of
useful protocols?
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