P2368R0
2021 Spring Library Evolution Polls

Published Proposal,

Author:
(NVIDIA)
Source:
GitHub
Issue Tracking:
GitHub
Project:
ISO/IEC JTC1/SC22/WG21 14882: Programming Language — C++
Audience:
WG21

1. Introduction

This paper contains the decision polls that the C++ Library Evolution group will take in Spring of 2021.

2. Voting

These decision polls will be conducted electronically; see [P2195R1] for more information on electronic voting procedures.

All committee members may vote, but if you have not participated in the Library Evolution discussions of a poll, please choose to not vote.

2.1. How to Vote

Vote here

A documents.isocpp.org account is necessary to vote. If you have an isocpp.org/papers account, a documents.isocpp.org account has been created for you. Just go to documents.isocpp.org and reset your password. Email Bryce Adelstein Lelbach if you do not have an account or are having trouble accessing your account.

If you see "Form not found" when you go to the above link, you are not signed in to documents.isocpp.org. Go to documents.isocpp.org and sign in first.

You will not receive a confirmation email after voting. The Library Evolution chairs will send a confirmation to all voters before the close of the poll.

If you need to change how you voted or have any questions or issues about voting, please email Bryce Adelstein Lelbach.

2.2. Voting Timeline

3. Polls

Each poll consists of a statement; you vote on whether you support the statement. All polls will be 5-way polls; you’ll vote either "strongly favor", "weakly favor", "neutral", "weakly against", or "strongly against".

All committee members may vote, but if you have not participated in the Library Evolution discussions of a poll (in-person, over telecon, or over email), please consider whether you sufficiently understand the topic to be able to vote in an informed manner. If you do not, please choose to not participate in the poll.

If you do not want to participate in a poll, select the "I do not want to participate in this poll" option. Those who do not participate in a poll will not be counted or recorded. Voting neutral is not the same as choosing to not participate; please don’t vote neutral if you did not participate in the discussions of the poll.

Each poll has a comment field. Please write a few sentences explaining the rationale for your vote.

Poll results and selected comments will be shared with Library Evolution after the end of the polling period, including attribution of your votes and comments.

If you want to discuss the polls or how you plan on voting, please start an email thread on the Library Evolution mailing list.

You will not receive a confirmation email after voting.

If you need to see how you voted, change how you voted, or have any questions or issues about voting, please contact the Library Evolution chair.

3.1. Poll 1: [P0323R10] expected

Send [P0323R10] (expected) to Library Working Group for C++23 instead of the proposed C++ Library Fundamentals Technical Specification version 3, classified as an addition ([P0592R4] bucket 3 item).

3.2. Poll 2: [P2325R2] Views Should Not Be Required To Be Default Constructible

Send [P2325R2] (Views Should Not Be Required To Be Default Constructible) to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item), with the recommendation that implementations retroactively apply it to C++20.

3.3. Poll 3: [P2328R0] join_view Should Join All Views Of Ranges

Send [P2328R0] (join_view Should Join All Views Of Ranges) to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item), with the recommendation that implementations retroactively apply it to C++20.

3.4. Poll 4: [P2210R2] Superior String Splitting

Send [P2210R2] (Superior String Splitting) to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item), with the recommendation that implementations retroactively apply it to C++20.

3.5. Poll 5: [P2321R1] views::zip

Send [P2321R1] (views::zip) to Library Working Group for C++23, classified as an addition ([P0592R4] bucket 3 item).

3.6. Poll 6: [P2251R1] Require span & basic_string_view To Be Trivially Copyable

Send [P2251R1] (Require span & basic_string_view To Be Trivially Copyable) to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.7. Poll 7: [P1072R7] basic_string::resize_and_overwrite

Modify [P1072R7] (basic_string::resize_and_overwrite) by adding a feature test macro, and then send the revised paper to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.8. Poll 8: [P2340R0] Clarifying The Status Of The "C Headers"

Send [P2340R0] (Clarifying The Status Of The "C Headers") to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.9. Poll 9: [P2301R0] Add A pmr Alias For stacktrace

Send [P2301R0] (Add A pmr Alias For stacktrace) to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

References

Informative References

[P0323R10]
JF Bastien, Vicente Botet. std::expected. 15 April 2021. URL: https://wg21.link/p0323r10
[P0592R4]
Ville Voutilainen. To boldly suggest an overall plan for C++23. 25 November 2019. URL: https://wg21.link/p0592r4
[P1072R7]
Chris Kennelly, Mark Zeren. basic_string::resize_and_overwrite. 15 February 2021. URL: https://wg21.link/p1072r7
[P2195R1]
Bryce Adelstein Lelbach. Electronic Straw Polls. 23 November 2020. URL: https://wg21.link/p2195r1
[P2210R2]
Barry Revzin. Superior String Splitting. 5 March 2021. URL: https://wg21.link/p2210r2
[P2251R1]
Nevin Liber. Require span & basic_string_view to be Trivially Copyable. 19 March 2021. URL: https://wg21.link/p2251r1
[P2301R0]
Steve Downey. Add a pmr alias for std::stacktrace. 15 February 2021. URL: https://wg21.link/p2301r0
[P2321R1]
Tim Song. zip. 11 April 2021. URL: https://wg21.link/p2321r1
[P2325R2]
Barry Revzin. Views should not be required to be default constructible. 23 April 2021. URL: https://wg21.link/p2325r2
[P2328R0]
Tim Song. join_view should join all views of ranges. 15 March 2021. URL: https://wg21.link/p2328r0
[P2340R0]
Thomas Köppe. Clarifying the status of the ‘C headers’. 15 March 2021. URL: https://wg21.link/p2340r0