[swift-evolution] Compiler Warning on Unextended Classes

[Rehat Kathuria]

Agree with Sean that this shouldn’t apply to classes declared public; I also don’t think the "default by final” discussion ever came to a consensus.

As for linters, my understanding of them is that they’re inclined to style-guides as opposed to architectural suggestions.The declaration of a class being final isn’t one that’s dependant on style, rather architecture.

> On 16 Jun 2016, at 17:57, Xiaodi Wu <xiaodi.wu at gmail.com> wrote:
> 
> On Thu, Jun 16, 2016 at 11:39 AM, L. Mihalkovic via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> Likely a lint level feature, no?
> 
> Agreed. Sounds like a linter feature. 
>  
> > On Jun 16, 2016, at 6:27 PM, Sean Heber via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> >
> > I would think this would not apply to public classes.
> >
> > There has also been discussion in the past about making final the default - I don’t remember if that ever resolved into some kind of consensus or not, though.
> >
> > l8r
> > Sean
> >
> >
> >> On Jun 16, 2016, at 11:23 AM, Saagar Jha via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> >>
> >> Correct me if I’m wrong, but if you’re writing some kind of framework and your class is not final but never subclassed, you wouldn’t want the warning, even if you’d like to allow users to subclass it?
> >>
> >>
> >>
> >> On Thu, Jun 16, 2016 at 9:02 AM Rehat Kathuria via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> >> I’d like the compiler to present a warning when a class not declared as final is never subclassed. Thoughts?
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