[swift-evolution] Compiler Warning on Unextended Classes

Saagar Jha saagarjha28 at gmail.com
Thu Jun 16 15:32:07 CDT 2016


I think that linters are the best way to handle this. It’s not really a
code smell that should always be taken care of (which would indicate that
the compiler should warn about it), and as such should be relegated to the
linter.

On Thu, Jun 16, 2016 at 10:08 AM Rehat Kathuria via swift-evolution <
swift-evolution at swift.org> wrote:

> 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> 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> 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> 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> 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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>> >> https://lists.swift.org/mailman/listinfo/swift-evolution
>> >> --
>> >> -Saagar Jha
>> >> _______________________________________________
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>> >> swift-evolution at swift.org
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>> >
>> > _______________________________________________
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>
>
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-- 
-Saagar Jha
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