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Subject: Re: [std-proposals] "Union types" syntactic sugar
From: Ville Voutilainen (ville.voutilainen_at_[hidden])
Date: 2020-03-04 12:25:35


On Wed, 4 Mar 2020 at 20:16, Barry Revzin <barry.revzin_at_[hidden]> wrote:
>> >> void f(std::basic_string<any_of<char, uint8_t> auto> x);
>> >
>> >
>> > This one is not valid in C++20, but hopefully will become valid in C++23 (although the auto would go outside the template - basic_string<Concept> auto)
>>
>> I don't think it would go outside.
>
>
> I'm looking forward to reading in your proposal why it should go inside :-)

Because that's where T goes, so I would naively think that's also
where auto goes, and where Concept auto goes.
Otherwise I don't know how to write vector<auto>, if the auto is
supposed to go outside the template-param list
and $somethingelse should go inside it.


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