[swift-evolution] [Accepted] SE-0104: Protocol-oriented integers

[Björn Forster]

Hi Joe,
the point made here is about the magnitude of complex numbers.
The magnitude of one complex number can be compared to the magnitude of a
second number.

Kind Regards




On Thu, Mar 2, 2017 at 6:21 PM, Joe Groff <jgroff at apple.com> wrote:

>
> On Mar 2, 2017, at 6:22 AM, Björn Forster <bjoern.forster at googlemail.com>
> wrote:
>
> Hello Joe,
> I wanted to ask kindly if it would be possible that the core team adds to
> the rationale the design decision behind
>
>   associatedtype Magnitude : Equatable, ExpressibleByIntegerLiteral
>
> being not comparable. It was pointed out by several reviewers that it is
> against all intuition that a scalar is not comparable and therefore pretty
> much useless.
>
> It would be great if you could add the thoughts of the core team regarding
> this to the rationale to document the reasons behind it.
>
>
> Complex numbers have magnitude, but aren't comparable.
>
> -Joe
>
>
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