[patch] LWG 2408. SFINAE-friendly common_type/iterator_traits is missing in C++14
Marc Glisse
marc.glisse@inria.fr
Wed Nov 12 12:55:00 GMT 2014
On Wed, 12 Nov 2014, Jonathan Wakely wrote:
> On 12/11/14 07:13 +0100, Marc Glisse wrote:
>> On Tue, 11 Nov 2014, Jonathan Wakely wrote:
>>
>>> + template<typename _Iterator, typename = __void_t<>>
>>
>> Is there a particular reason not to write "void" directly?
>
> I like this form as a hint that the specialization is expected to use
> void_t for that parameter ... but as the specializations tend to be
> only about 5 lines away the hint isn't really needed. I'll stop doing
> it if you prefer :)
No, documentation is as good a purpose as any, I was just curious.
--
Marc Glisse
More information about the Gcc-patches
mailing list