P1206 ranges::to: A function to convert any range to a container #145

jensmaurer · 2019-01-26T10:13:09Z

P1206R1 ranges::to: A function to convert any range to a container (Corentin Jabot, Eric Niebler, Casey Carter)

tituswinters · 2019-02-21T01:15:05Z

LEWG in Kona:
Pursue this for C++20.
SF F N A SA
0 4 5 4 3

(Concerns about convertible-to associative containers, expressing things in terms of CTAD.)

tituswinters · 2019-02-22T18:47:46Z

LEWG in Kona:
OK with auto j = my_range | ranges::tostd::vector;
(The invocation without ()s).
SF F N A SA
9 6 6 3 0

Add wording with Eric & Casey, send to LWG for C++20.
SF F N A SA
10 10 2 0 0

mclow · 2019-06-07T17:36:00Z

Note: p1206r1 has no proposed wording.

We do not provide wording at this time, but this is what the interface would look like conceptually.

Sadly, std::ranges is missing an equivalent of boost::copy_range(), so we introduce a replacement: ranges::to(). There is an existing proposal to introduce something similar to the standard library: std::ranges::to() (cplusplus/papers#145). We name our own version similarly, so if said proposal makes it in we can just prepend std:: and be good.

Sadly, std::ranges is missing an equivalent of boost::copy_range(), so we introduce a replacement: ranges::to(). There is an existing proposal to introduce something similar to the standard library: std::ranges::to() (cplusplus/papers#145). We name our own version similarly, so if said proposal makes it in we can just prepend std:: and be good. Signed-off-by: Botond Dénes <bdenes@scylladb.com> Message-Id: <20200529141407.158960-2-bdenes@scylladb.com>

cor3ntin · 2020-09-21T05:31:35Z

Author: There has been some design changes, this needs to go back to LEWG - I took the liberty to update the labels accordingly

wg21bot · 2020-10-21T15:59:28Z

P1206R2 ranges::to: A function to convert any range to a container (Corentin Jabot, Eric Niebler, Casey Carter)

wg21bot · 2020-11-23T20:02:57Z

P1206R3 ranges::to: A function to convert any range to a container (Corentin Jabot, Eric Niebler, Casey Carter)

ben-craig · 2020-12-17T19:16:23Z

P1206R2: ranges::to

2020-12-14 Library Evolution Telecon Minutes

Chair: Ben Craig

Champion: Corentin Jabot

Minute Taker: Inbal Levi

Start: 2020-12-14 08:50 Pacific Standard

POLL: We want ranges::to to preallocate memory when using "reservable" containers in order to minimize allocations.

Strongly Favor	Weakly Favor	Neutral	Weakly Against	Strongly Against
9	6	0	0	0

Attendance: 24

# of Authors: 3

Author Position: SF, SF, No Vote

Outcome: Consensus in favor

POLL: Remove support for nested containers.

Strongly Favor	Weakly Favor	Neutral	Weakly Against	Strongly Against
0	0	3	6	2

Attendance: 24

# of Authors: 3

Author Position: SA, WA, No Vote

Outcome: Consensus against changing the paper

POLL: Put back support for syntax without parenthesis.

Strongly Favor	Weakly Favor	Neutral	Weakly Against	Strongly Against
0	1	8	4	0

Attendance: 25

# of Authors: 3

Outcome: No consensus to change the paper

POLL: We approve of the direction of P1206R3.

Attendance: 25

Outcome: No opposition to unanimous consent

End: 09:35

SUMMARY:
We discussed some of the challenges involved with the old, no parenthesis form of ranges::to. We also discussed some of the scoping of reservable types (it's not just vector!).

OUTCOME:

Bring back a revised paper. Figure out how to deal with container reservation to avoid wasted allocations and rehashes. Please add an example that includes vector self assignment.

brycelelbach · 2021-08-04T00:54:20Z

2021-08-03 Library Evolution Telecon

P1206R5: ranges::to

P1206R6: ranges::to

2021-08-03 Library Evolution Telecon Minutes

Chair: Bryce Adelstein Lelbach

Champion: Corentin Jabot

Minute Taker: Ben Craig

Start: 2021-08-03 14:04 Pacific

End: 14:17

Summary

When we reviewed and forwarded this paper to electronic polling on 2021-07-20, we looked at and forwarded R5 with some modifications (e.g. R6), but R5 and R6 have not yet appeared in a mailing, although they have been submitted. So, we briefly discussed the situation to confirm that the preprint of R6 on the isocpp.org paper system had the requested changes and that everyone was okay with polling it.

Outcome

Modify 2021 Summer Library Evolution Poll 3 to state that it's forwarding P1206R6.

wg21bot · 2021-08-23T14:54:12Z

P1206R5 Conversions from ranges to containers (Corentin Jabot, Eric Niebler, Casey Carter)

wg21bot · 2021-08-23T14:54:16Z

P1206R6 Conversions from ranges to containers (Corentin Jabot, Eric Niebler, Casey Carter)

brycelelbach · 2021-09-06T17:09:12Z

2021 Summer Library Evolution Polls

P2435: 2021 Summer Library Evolution Poll Outcomes

POLL 3: Send P1206R6 (ranges::to) to Library Working Group for C++23, classified as an addition (P0592R4 bucket 3 item).

Strongly Favor	Weakly Favor	Neutral	Weakly Against	Strongly Against
19	9	0	0	0

Outcome: Unanimous consensus in favor.

JeffGarland · 2022-01-21T23:33:25Z

LWG reviewed and approved final wording 2022-01-21

Poll: Adopt P1206R7 to the C++ working draft for c++23.

F	A	N
11	0	0

wg21bot · 2022-01-22T20:29:02Z

P1206R7 Conversions from ranges to containers (Corentin Jabot, Eric Niebler, Casey Carter)

jensmaurer · 2022-02-11T22:44:21Z

Approved by WG21 plenary 2022-02-07

jensmaurer added this to the 2019-02 milestone Jan 26, 2019

jensmaurer added LEWG Library Evolution ranges std::ranges labels Jan 26, 2019

jensmaurer added this to Wednesday in LEWG in Kona 2019 Feb 6, 2019

tituswinters removed the LEWG Library Evolution label Feb 21, 2019

tituswinters added the LWG Library label Feb 22, 2019

jensmaurer removed this from the 2019-02 milestone Mar 21, 2019

jensmaurer added the needs-revision Paper needs changes before it can proceed label Jul 1, 2019

cor3ntin added LEWG Library Evolution and removed LWG Library labels Sep 21, 2020

ben-craig added the B3 - addition Bucket 3 as described by P0592: material that is not mentioned in P0592 label Oct 17, 2020

wg21bot removed the needs-revision Paper needs changes before it can proceed label Oct 21, 2020

wg21bot added this to the 2020-telecon milestone Oct 21, 2020

brycelelbach added IS Ship vehicle: IS ready-for-library-evolution-meeting-review This paper needs to be discussed at a Library Evolution meeting C++23 Targeted at C++23 labels Nov 16, 2020

ben-craig added the needs-revision Paper needs changes before it can proceed label Dec 17, 2020

jensmaurer removed this from the 2020-telecon milestone Dec 27, 2020

inbal2l added SG9 Ranges SG and removed LEWG Library Evolution ready-for-library-evolution-meeting-review This paper needs to be discussed at a Library Evolution meeting labels Jun 8, 2021

brycelelbach removed the needs-revision Paper needs changes before it can proceed label Aug 4, 2021

inbal2l removed scheduled-for-library-evolution This paper has been scheduled for one of the groups: LEWG, LEWG Incubator, or a Mailing List review SG9 Ranges SG labels Aug 23, 2021

brycelelbach added the scheduled-for-library-evolution This paper has been scheduled for one of the groups: LEWG, LEWG Incubator, or a Mailing List review label Sep 6, 2021

JeffGarland added lwg-prereview Needs LWG initial review before full group and removed lwg-pending LWG Chair needs to disposition labels Nov 3, 2021

jensmaurer modified the milestones: 2021-telecon, 2022-telecon Jan 1, 2022

JeffGarland added tentatively-ready-for-plenary Reviewed between meetings; ready for a vote. and removed lwg-prereview Needs LWG initial review before full group B3 - addition Bucket 3 as described by P0592: material that is not mentioned in P0592 labels Jan 21, 2022

cor3ntin added the plenary-approved Papers approved for inclusion in their target vehicle by plenary vote. label Feb 7, 2022

jensmaurer mentioned this issue Feb 10, 2022

P1206R7 Conversions from ranges to containers cplusplus/draft#5280

Merged

tkoeppe closed this as completed in cplusplus/draft#5280 Feb 19, 2022

cor3ntin removed the tentatively-ready-for-plenary Reviewed between meetings; ready for a vote. label Feb 21, 2022

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P1206 ranges::to: A function to convert any range to a container #145

P1206 ranges::to: A function to convert any range to a container #145

jensmaurer commented Jan 26, 2019

tituswinters commented Feb 21, 2019 •

edited by jensmaurer

tituswinters commented Feb 22, 2019 •

edited by jensmaurer

mclow commented Jun 7, 2019

cor3ntin commented Sep 21, 2020

wg21bot commented Oct 21, 2020

wg21bot commented Nov 23, 2020

ben-craig commented Dec 17, 2020 •

edited

brycelelbach commented Aug 4, 2021 •

edited

wg21bot commented Aug 23, 2021

wg21bot commented Aug 23, 2021

brycelelbach commented Sep 6, 2021

JeffGarland commented Jan 21, 2022 •

edited

wg21bot commented Jan 22, 2022

jensmaurer commented Feb 11, 2022

P1206 ranges::to: A function to convert any range to a container #145

P1206 ranges::to: A function to convert any range to a container #145

Comments

jensmaurer commented Jan 26, 2019

tituswinters commented Feb 21, 2019 • edited by jensmaurer

tituswinters commented Feb 22, 2019 • edited by jensmaurer

mclow commented Jun 7, 2019

cor3ntin commented Sep 21, 2020

wg21bot commented Oct 21, 2020

wg21bot commented Nov 23, 2020

ben-craig commented Dec 17, 2020 • edited

brycelelbach commented Aug 4, 2021 • edited

2021-08-03 Library Evolution Telecon

Summary

Outcome

wg21bot commented Aug 23, 2021

wg21bot commented Aug 23, 2021

brycelelbach commented Sep 6, 2021

2021 Summer Library Evolution Polls

JeffGarland commented Jan 21, 2022 • edited

wg21bot commented Jan 22, 2022

jensmaurer commented Feb 11, 2022

tituswinters commented Feb 21, 2019 •

edited by jensmaurer

tituswinters commented Feb 22, 2019 •

edited by jensmaurer

ben-craig commented Dec 17, 2020 •

edited

brycelelbach commented Aug 4, 2021 •

edited

JeffGarland commented Jan 21, 2022 •

edited