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Re: [SG10] [isocpp-core] No __cpp_concepts in the C++20 draft

From: Jason Merrill <jason_at_[hidden]>
Date: Sat, 14 Sep 2019 15:37:42 -0400
This doesn't seem to have been addressed at Cologne. I don't think
any of the changes at Cologne (conditionally trivial, unconstrained
TTP, dropping return-type requirements) require a version bump, does
anyone else?

So I'd stick with the 201811 value.

Jason

On Fri, May 31, 2019 at 4:42 PM Casey Carter <cartec69_at_[hidden]> wrote:
>
> Ping.
>
> Is this one someone's plate for Cologne, or does it need to be on mine?
>
> On Fri, Mar 1, 2019 at 9:04 AM Hubert Tong <hubert.reinterpretcast_at_[hidden]> wrote:
>>
>> I'm still hoping for some SG10 guidance on whether we want to query on what -> Concept does separately from whether Concept auto is available. There is also static_assert(C<T>) in the mix somewhere.
>>
>> -- HT
>>
>> On Fri, Mar 1, 2019 at 8:45 AM John Spicer <jhs_at_[hidden]> wrote:
>>>
>>> That seems appropriate to me (copying the core reflector).
>>>
>>> John.
>>>
>>> > On Mar 1, 2019, at 7:21 AM, Jonathan Wakely <cxx_at_[hidden]> wrote:
>>> >
>>> > The working draft doesn't specify a __cpp_concepts macro. I want to know if I need to say "concept bool" or just "concept", so I expected to be able to do:
>>> >
>>> > #if __cpp_concepts
>>> > template<typename T>
>>> > concept
>>> > #if __cpp_concepts <= 201507
>>> > bool
>>> > #endif
>>> > Foo = ...;
>>> > #endif
>>> >
>>> > Should this be handled by a core issue?
>>> >
>>> > _______________________________________________
>>> > Features mailing list
>>> > Features_at_[hidden]
>>> > http://www.open-std.org/mailman/listinfo/features
>>>
>>> _______________________________________________
>>> Features mailing list
>>> Features_at_[hidden]
>>> http://www.open-std.org/mailman/listinfo/features
>>
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>
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Received on 2019-09-14 21:45:12