"Not all classes make sense to subclass." It's absurd to imagine you can predict all valid subclassing patterns. http://mjtsai.com/blog/2016/07/17/swift-classes-to-be-non-publicly-subclassable-by-default/ …
@danielpunkass @tapbot_paul Yes, that is my understanding as well. And it’s been clear for a while they were going to do this.
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@mjtsai@danielpunkass we’re not not rejecting this!
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Daniel Jalkut
Paul Haddad
Michael Tsai