[swift-evolution] [Proposal] Sealed classes by default

[John McCall]

> On Jun 29, 2016, at 11:39 AM, Vladimir.S <svabox at gmail.com> wrote:
> How about `public(extensible)` ?

Hmm.  I started to work out an example with these as separate modifiers, and I think I understand the need to combine them in some way.

I wonder if just "extensible" would be good enough.  It is a term that's used in API descriptions.

John.