[swift-users] Set with element of NSObject subclasses didn't work as expected

[Hooman Mehr]

> On Mar 29, 2017, at 11:36 AM, Joe Groff via swift-users <swift-users at swift.org> wrote:
> 
> Perhaps the NSObject implementation of `hashValue` should be final to help with this.


Good idea. And as I mentioned in my other reply, we need further emphasis and clarification in the documentation who are starting Apple development with Swift with no prior knowledge of ObjC/NSObject stuff.

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