C++ Logo

std-proposals

Advanced search

Re: [std-proposals] missing P1317R2

From: Lénárd Szolnoki <cpp_at_[hidden]>
Date: Fri, 12 Sep 2025 09:48:49 +0100
On 12/09/2025 07:30, Akira Takahashi via Std-Proposals wrote:
> Hi,
>
> "P1317R2 Remove return type deduction in std::apply"
> https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p1317r2.pdf <https://open-std.org/
> jtc1/sc22/wg21/docs/papers/2025/p1317r2.pdf>
>
> This document has been applied into the C++26 Working Draft, but the link to the document
> is not found.
> Are you aware of this issue?

I could not find it either. I think it did not get published by mistake. I notified the
authors to follow up on this. Thank you for noticing!

What I gathered from the wiki is that the R2 version drops the concepts `applicable,
`regular_applicable` and `is_applicable_r` and `is_nothrow_applicable_r` traits compared
to R1, no other changes.

>
> See follow document:
>
> N5015 Editors’ Report: Programming Languages — C++
> https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/n5015.html <https://www.open-
> std.org/jtc1/sc22/wg21/docs/papers/2025/n5015.html>
>

Received on 2025-09-12 08:48:57