<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 22 Jul 2016, at 03:11, Robert Widmann via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=us-ascii" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hello Swift Community,</div><div class=""><br class=""></div><div class="">Harlan Haskins, Jaden Geller, and I have been working on a proposal to clean up the semantics of ordering relations in the standard library. We have a draft that you can <a href="https://gist.github.com/CodaFi/f0347bd37f1c407bf7ea0c429ead380e" class="">get as a gist.</a> Any feedback you might have about this proposal helps - though please keeps your comments on Swift-Evolution and not on the gist.</div><div class=""><br class=""></div><div class="">Cheers,</div><div class=""><br class=""></div><div class="">~Robert Widmann</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></div>
_______________________________________________<br class="">swift-evolution mailing list<br class=""><a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a><br class="">https://lists.swift.org/mailman/listinfo/swift-evolution<br class=""></div></blockquote></div><br class=""><div class="">I fear that this will become confusing (especially since Equatable may now be implemented as a static function, too). We will have 3 different “equality” comparisons in Swift:</div><div class=""><br class=""></div><div class="">=== for reference-types</div><div class="">== for all types</div><div class="">areSame() which may be subtly different to ==</div><div class=""><br class=""></div><div class="">In order to have an opinion on whether or not this is justified, I need to know more about how areSame() may differ from == and how this will affect generic code. What is required that could not fit inside an override of Equatable? If this only applies to a few types, will it be its own protocol (e.g. EquivalenceCheckable)?</div><div class=""><br class=""></div><div class="">Karl</div></body></html>