March 18-23, Tokyo, Japan
April 17-20, Bristol, UK
April 24-26, Leganes, Spain
April 30, Online
May 7-12, Aspen, CO, USA
June 24-29, St. Louis, MO, USA
July 2-5, Folkestone, Kent, UK
By Timur Doumler | Aug 10, 2022 10:05 AM | Tags: c++23
Here is my report from the July 2022 ISO C++ committee virtual meeting.
Meeting Report
by Timur Doumler
About the report:
This was the last virtual plenary before WG21 returns to meeting in person, and the last plenary where we voted new features into C++23, which is now in feature freeze.
By Administrator | Jul 21, 2022 01:40 PM | Tags: None
The 2022-07 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| P0009R18 | MDSPAN | Christian Trott | 2022-07-13 | 2022-07 | P0009R17 | All of WG21 |
| P1018R17 | C++ Language Evolution status pandemic edition 2022/06–2022/07 | JF Bastien | 2022-07-09 | 2022-07 | P1018R16 | EWG Evolution,All of WG21 |
| P1083R6 | Move resource_adaptor from Library TS to the C++ WP | Pablo Halpern | 2022-07-08 | 2022-07 | P1083R5 | LEWG Library Evolution |
| P1255R8 | A view of 0 or 1 elements: views::maybe | Steve Downey | 2022-07-11 | 2022-07 | P1255R7 | SG9 Ranges,LEWG Library Evolution |
| P1642R11 | Freestanding Library: Easy [utilities], [ranges], and [iterators] | Ben Craig | 2022-07-01 | 2022-07 | P1642R10 | CWG Core |
| P1684R3 | mdarray: An Owning Multidimensional Array Analog of mdspan | Christian Trott | 2022-07-14 | 2022-07 | P1684R2 | LEWG Library Evolution |
| P1899R3 | stride_view | Christopher Di Bella, Tim Song | 2022-07-10 | 2022-07 | P1899R2 | SG9 Ranges,LEWG Library Evolution |
| P1967R8 | #embed - a simple, scannable preprocessor-based resource acquisition method | JeanHeyd Meneide | 2022-06-28 | 2022-07 | P1967R7 | EWG Evolution |
| P2047R3 | An allocator-aware optional type | Nina Ranns | 2022-07-08 | 2022-07 | P2047R2 | LEWG Library Evolution |
| P2079R3 | System execution context | Lee Howes | 2022-07-15 | 2022-07 | P2079R2 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2165R4 | Compatibility between tuple, pair and tuple-like objects | Corentin Jabot | 2022-07-15 | 2022-07 | P2165R3 | LEWG Library Evolution |
| P2248R5 | Enabling list-initialization for algorithms | Giuseppe D'Angelo | 2022-06-29 | 2022-07 | P2248R4 | SG6 Numerics,SG9 Ranges,LEWG Library Evolution |
| P2295R6 | Support for UTF-8 as a portable source file encoding | Corentin Jabot | 2022-07-01 | 2022-07 | P2295R5 | SG22 Compatability,EWG Evolution |
| P2361R5 | Unevaluated strings | Corentin Jabot | 2022-07-09 | 2022-07 | P2361R4 | EWG Evolution |
| P2374R4 | views::cartesian_product | Sy Brand | 2022-07-13 | 2022-07 | P2374R3 | LWG Library |
| P2404R3 | Move-only types for equality_comparable_with, totally_ordered_with, and three_way_comparable_with | Justin Bassett | 2022-07-08 | 2022-07 | P2404R2 | SG9 Ranges,LEWG Library Evolution,LWG Library |
| P2417R2 | A more constexpr bitset | Daniil Goncharov | 2022-07-16 | 2022-07 | P2417R1 | LWG Library |
| P2419R2 | Clarify handling of encodings in localized formatting of chrono types | Victor Zverovich | 2022-07-15 | 2022-07 | P2419R1 | LWG Library |
| P2460R2 | Relax requirements on wchar_t to match existing practices | Corentin Jabot | 2022-07-15 | 2022-07 | P2460R1 | SG22 Compatability,CWG Core |
| P2474R2 | views::repeat | Michał Dominiak | 2022-07-13 | 2022-07 | P2474R1 | SG9 Ranges,LWG Library |
| P2481R1 | Forwarding reference to specific type/template | Barry Revzin | 2022-07-15 | 2022-07 | P2481R0 | EWG Evolution |
| P2494R2 | Relaxing range adaptors to allow for move only types | Michał Dominiak | 2022-07-13 | 2022-07 | P2494R1 | SG9 Ranges,LWG Library |
| P2513R4 | char8_t Compatibility and Portability Fix | JeanHeyd Meneide | 2022-06-26 | 2022-07 | P2513R3 | EWG Evolution |
| P2547R1 | Language support for customisable functions | Lewis Baker | 2022-07-16 | 2022-07 | P2547R0 | EWG Evolution |
| P2548R0 | copyable_function | Michael Florian Hava | 2022-07-13 | 2022-07 | LEWG Library Evolution | |
| P2549R1 | std::unexpected should have error() as member accessor | Yihe Li | 2022-07-04 | 2022-07 | P2549R0 | LWG Library |
| P2561R0 | operator?? | Barry Revzin | 2022-07-10 | 2022-07 | EWG Evolution | |
| P2579R0 | Mitigation strategies for P2036 "Changing scope for lambda trailing-return-type" | Corentin Jabot | 2022-07-01 | 2022-07 | EWG Evolution,CWG Core | |
| P2585R1 | Improving default container formatting | Barry Revzin | 2022-07-15 | 2022-07 | P2585R0 | LEWG Library Evolution |
| P2587R1 | to_string or not to_string | Victor Zverovich | 2022-06-24 | 2022-07 | P2587R0 | SG16 Unicode |
| P2590R2 | Explicit lifetime management | Timur Doumler | 2022-07-15 | 2022-07 | P2590R1 | CWG Core,LWG Library |
| P2592R1 | Hashing support for std::chrono value classes | Giuseppe D'Angelo | 2022-06-30 | 2022-07 | P2592R0 | LEWG Library Evolution |
| P2601R1 | Make redundant empty angle brackets optional | Justin Cooke | 2022-07-16 | 2022-07 | P2601R0 | EWG Evolution,CWG Core |
| P2602R1 | Poison Pills are Too Toxic | Barry Revzin | 2022-07-11 | 2022-07 | P2602R0 | LEWG Library Evolution |
| P2609R1 | Relaxing Ranges Just A Smidge | John Eivind Helset | 2022-06-29 | 2022-07 | P2609R0 | SG9 Ranges,LEWG Library Evolution |
| P2610R0 | 2022-07 Library Evolution Polls | Bryce Adelstein Lelbach | 2022-06-29 | 2022-07 | LEWG Library Evolution | |
| P2613R1 | Add the missing `empty` to `mdspan` | Yihe Le | 2022-06-29 | 2022-07 | P2613R0 | LEWG Library Evolution |
| P2614R0 | Deprecate numeric_limits::has_denorm | Matthias Kretz | 2022-07-06 | 2022-07 | SG6 Numerics,LEWG Library Evolution | |
| P2615R0 | Meaningful exports | S. Davis Herring | 2022-07-01 | 2022-07 | CWG Core | |
| P2616R0 | Making std::atomic notification/wait operations usable in more situations | Lewis Baker | 2022-07-05 | 2022-07 | SG1 Concurrency and Parallelism | |
| P2617R0 | Responses to NB comments on DTS 12907 "Extensions to C++ for Transactional Memory Version 2" | Jens Maurer | 2022-07-15 | 2022-07 | SG5 Transactional Memory,CWG Core | |
| P2618R0 | C++ Standard Library Issues to be moved in Virtual Plenary, Jul. 2022 | Jonathan Wakely | 2022-07-15 | 2022-07 | All of WG21 | |
| P2620R0 | Lifting artificial restriction on universal character names | Corentin Jabot | 2022-07-09 | 2022-07 | SG16 Unicode,SG22 Compatability,EWG Evolution | |
| P2621R0 | UB? In my Lexer? | Corentin Jabot | 2022-07-09 | 2022-07 | SG22 Compatability,EWG Evolution | |
| P2622R0 | Core Language Working Group "ready" Issues for the July, 2022 meeting | Jens Maurer | 2022-07-15 | 2022-07 | All of WG21 | |
| P2623R0 | implicit constant initialization | Jarrad J. Waterloo | 2022-07-13 | 2022-07 | EWG Evolution | |
| P2624R0 | Make operations on bools more portable | Justin Cooke | 2022-07-16 | 2022-07 | CWG Core |
By Vinnie | Jul 4, 2022 11:52 AM | Tags: community c++17
Several Boost authors have embarked on a project to improve the performance of boost's associative containers.
Boost.Unordered
by boost.org
About the improvements:
Boost.Unordered's new implementation of std::unordered_map (and multimap, set and multiset variants), and to extend its portfolio of available containers to offer faster, non-standard alternatives based on open addressing.
The first goal of the project has been completed in time for Boost 1.80 (due August 2022). We describe here the technical innovations introduced in boost::unordered_map that makes it the fastest implementation of std::unordered_map on the market.
By Administrator | Jun 23, 2022 05:47 PM | Tags: None
The 2022-06 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| P0009R17 | MDSPAN | Christian Trott | 2022-06-15 | 2022-06 | P0009R16 | LWG Library |
| P0429R9 | A Standard flat_map | Zach Laine | 2022-06-17 | 2022-06 | P0429R8 | LWG Library |
| P0447R20 | Introduction of std::hive to the standard library | Matt Bentley | 2022-06-14 | 2022-06 | P0447R19 | SG14 Low Latency,LEWG Library Evolution,All of WG21 |
| P0792R10 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2022-06-14 | 2022-06 | P0792R9 | LEWG Library Evolution,LWG Library |
| P0957R8 | Proxy: A Polymorphic Programming Library | Mingxin Wang | 2022-06-15 | 2022-06 | P0957R7 | LEWG Library Evolution |
| P1018R16 | C++ Language Evolution status pandemic edition 2022/02–2022/06 | JF Bastien | 2022-06-16 | 2022-06 | P1018R15 | EWG Evolution,All of WG21 |
| P1144R6 | Object relocation in terms of move plus destroy | Arthur O'Dwyer | 2022-06-09 | 2022-06 | P1144R5 | EWG Evolution,LEWG Library Evolution |
| P1222R4 | A Standard flat_set | Zach Laine | 2022-06-13 | 2022-06 | P1222R3 | LWG Library |
| P1223R5 | find_last | Zach Laine | 2022-06-17 | 2022-06 | P1223R4 | LWG Library |
| P1642R10 | Freestanding Library: Easy [utilities], [ranges], and [iterators] | Ben Craig | 2022-06-18 | 2022-06 | P1642R9 | CWG Core,LWG Library |
| P1673R9 | A free function linear algebra interface based on the BLAS | Mark Hoemmen | 2022-06-14 | 2022-06 | P1673R8 | SG6 Numerics,LEWG Library Evolution |
| P1689R5 | Format for describing dependencies of source files | Ben Boeckel | 2022-06-06 | 2022-06 | P1689R4 | SG15 Tooling,SG16 Unicode |
| P1774R8 | Portable assumptions | Timur Doumler | 2022-06-14 | 2022-06 | P1774R7 | CWG Core |
| P1839R5 | Accessing object representations | Timur Doumler | 2022-06-16 | 2022-06 | P1839R4 | CWG Core |
| P1967R7 | #embed - a simple, scannable preprocessor-based resource acquisition method | JeanHeyd Meneide | 2022-06-23 | 2022-06 | P1967R6 | EWG Evolution |
| P2167R2 | Improved Proposed Wording for LWG 2114 (contextually convertible to bool) | Daniel Krügler | 2022-06-15 | 2022-06 | P2167R1 | LWG Library |
| P2278R4 | cbegin should always return a constant iterator | Barry Revzin | 2022-06-17 | 2022-06 | P2278R3 | LEWG Library Evolution |
| P2490R3 | Zero-overhead exception stacktraces | Ed Catmur | 2022-06-20 | 2022-06 | LEWG Library Evolution | |
| P2502R2 | std::generator: Synchronous Coroutine Generator for Ranges | Casey Carter | 2022-06-03 | 2022-06 | P2502R1 | LWG Library |
| P2505R3 | Monadic Functions for std::expected | Jeff Garland | 2022-06-15 | 2022-06 | P2505R2 | LEWG Library Evolution,LWG Library |
| P2505R4 | Monadic Functions for std::expected | Jeff Garland | 2022-06-17 | 2022-06 | P2505R3 | LEWG Library Evolution,LWG Library |
| P2513R3 | char8_t Compatibility and Portability Fix | JeanHeyd Meneide | 2022-06-17 | 2022-06 | P2513R2 | EWG Evolution |
| P2551R2 | Clarify intent of P1841 numeric traits | Matthias Kretz | 2022-06-22 | 2022-06 | P2551R1 | LEWG Library Evolution |
| P2562R1 | constexpr Stable Sorting | Oliver Rosten | 2022-06-14 | 2022-06 | P2562R0 | LEWG Library Evolution,LWG Library |
| P2570R0 | On side effects in contract annotations | Andrzej Krzemieński | 2022-06-08 | 2022-06 | SG21 Contracts | |
| P2572R0 | std::format() fill character allowances | Tom Honermann | 2022-06-11 | 2022-06 | SG16 Unicode,LEWG Library Evolution | |
| P2575R0 | 2022-05 Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2022-06-22 | 2022-06 | LEWG Library Evolution | |
| P2582R1 | Wording for class template argument deduction from inherited constructors | Timur Doumler | 2022-05-23 | 2022-06 | P2582R0 | CWG Core |
| P2590R1 | Explicit lifetime management | Timur Doumler | 2022-06-15 | 2022-06 | P2590R0 | CWG Core,LWG Library |
| P2591R1 | Concatenation of strings and string views | Giuseppe D'Angelo | 2022-06-02 | 2022-06 | P2591R0 | LEWG Library Evolution |
| P2594R0 | Slides: Allow programmer to control and detect coroutine elision (P2477R2 Presentation)) | Chuanqi Xu | 2022-05-26 | 2022-06 | EWG Evolution,LEWG Library Evolution | |
| P2596R0 | Improve std::hive::reshape | Arthur O'Dwyer | 2022-06-09 | 2022-06 | SG14 Low Latency,LEWG Library Evolution | |
| P2598R0 | "Changing scope for lambda trailing-return-type" (P2036) should not be a DR | Ville Voutilainen | 2022-05-29 | 2022-06 | EWG Evolution,CWG Core | |
| P2599R0 | mdspan::size_type should be index_type | Nevin Liber | 2022-06-07 | 2022-06 | LEWG Library Evolution | |
| P2599R1 | mdspan::size_type should be index_type | Nevin Liber | 2022-06-13 | 2022-06 | P2599R0 | LEWG Library Evolution |
| P2599R2 | index _type & size_type in mdspan | Nevin Liber | 2022-06-23 | 2022-06 | P2599R1 | LEWG Library Evolution,LWG Library |
| P2600R0 | A minimal ADL restriction to avoid ill-formed template instantiation | Matthias Kretz | 2022-06-15 | 2022-06 | EWGI SG17: EWG Incubator,EWG Evolution | |
| P2601R0 | To make redundant empty angle brackets optional for class template argument lists | Justin Cooke | 2022-06-23 | 2022-06 | EWG Evolution,CWG Core | |
| P2602R0 | Poison Pills are Too Toxic | Barry Revzin | 2022-06-17 | 2022-06 | LEWG Library Evolution | |
| P2603R0 | member function pointer to function pointer | Jarrad Waterloo | 2022-06-15 | 2022-06 | EWG Evolution,LEWG Library Evolution | |
| P2604R0 | MDSPAN: rename pointer and contiguous | Christian Trott | 2022-06-15 | 2022-06 | LEWG Library Evolution,LWG Library | |
| P2605R0 | SG16: Unicode meeting summaries 2022-01-12 through 2022-06-08 | Tom Honermann | 2022-06-15 | 2022-06 | SG16 Unicode | |
| P2607R0 | Let alignas specify minimum alignment | Justin Cooke | 2022-06-23 | 2022-06 | CWG Core | |
| P2608R0 | Allow multiple init-statements | Justin Cooke | 2022-06-23 | 2022-06 | EWG Evolution | |
| P2609R0 | Relaxing Ranges Just A Smidge | John Eivind Helset | 2022-06-23 | 2022-06 | SG9 Ranges | |
| P2613R0 | Add the missing `empty` to `mdspan` | Yihe Le | 2022-06-23 | 2022-06 | LEWG Library Evolution |
By Blog Staff | Jun 7, 2022 08:01 PM | Tags: None
Over the past week, we ran our 2022 annual global C++ developer survey. Thank you to everyone who responded. As promised, here is a summary of the results:
CppDevSurvey-2022-summary.pdf
The results have now been forwarded to the C++ standards committee to help inform C++ evolution. Your feedback will be very helpful, and thank you again for your participation! Stay safe, everyone.
By Administrator | May 24, 2022 08:28 AM | Tags: None
The 2022-05 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4912 | 2022-11 Kona hybrid meeting information | Herb Sutter | 2022-05-05 | 2022-05 | All of WG21 | |
| N4913 | PL22.16/WG21 agenda: 25 July 2022, Virtual Meeting | John Spicer | 2022-05-22 | 2022-05 | All of WG21 | |
| P0543R1 | Saturation arithmetic | Jens Maurer | 2022-05-02 | 2022-05 | P0543R0 | SG6 Numerics,LEWG Library Evolution |
| P0792R9 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2022-05-20 | 2022-05 | P0792R8 | LEWG Library Evolution,LWG Library |
| P0901R9 | Size feedback in operator new | Chris Kennelly | 2022-04-26 | 2022-05 | P0901R8 | CWG Core,LWG Library |
| P1021R6 | Filling holes in Class Template Argument Deduction | Mike Spertus | 2022-05-22 | 2022-05 | P1021R5 | CWG Core |
| P1255R7 | A view of 0 or 1 elements: views::maybe | Steve Downey | 2022-05-09 | 2022-05 | P1255R6 | SG9 Ranges |
| P1642R9 | Freestanding Library: Easy [utilities], [ranges], and [iterators] | Ben Craig | 2022-05-15 | 2022-05 | P1642R8 | CWG Core,LWG Library |
| P1673R8 | A free function linear algebra interface based on the BLAS | Mark Hoemmen | 2022-05-15 | 2022-05 | P1673R7 | SG6 Numerics,LEWG Library Evolution |
| P1674R2 | Evolving a Standard C++ Linear Algebra Library from the BLAS | Mark Hoemmen | 2022-05-15 | 2022-05 | P1674R1 | LEWG Library Evolution |
| P1774R7 | Portable assumptions | Timur Doumler | 2022-05-15 | 2022-05 | P1774R6 | CWG Core |
| P1967R6 | #embed - a simple, scannable preprocessor-based resource acquisition method | JeanHeyd Meneide | 2022-05-02 | 2022-05 | P1967R5 | EWG Evolution |
| P2286R8 | Formatting Ranges | Barry Revzin | 2022-05-16 | 2022-05 | P2286R7 | LEWG Library Evolution |
| P2429R0 | Concepts Error Messages for Humans | Sy Brand | 2022-05-16 | 2022-05 | SG15 Tooling | |
| P2445R1 | forward_like | Gašper Ažman | 2022-05-13 | 2022-05 | P2445R0 | LWG Library |
| P2460R1 | Relax requirements on wchar_t to match existing practices | Corentin Jabot | 2022-05-12 | 2022-05 | P2460R0 | SG22 Compatability,CWG Core |
| P2472R3 | make function_ref more functional | Jarrad J. Waterloo | 2022-05-12 | 2022-05 | P2472R2 | LEWG Library Evolution |
| P2510R3 | Formatting pointers | Mark de Wever | 2022-05-22 | 2022-05 | P2510R2 | LWG Library |
| P2513R2 | char8_t Compatibility and Portability Fix | JeanHeyd Meneide | 2022-05-12 | 2022-05 | P2513R1 | EWG Evolution |
| P2542R2 | views::concat | Hui Xie | 2022-05-11 | 2022-05 | P2542R1 | SG9 Ranges,LEWG Library Evolution |
| P2551R1 | Clarify intent of P1841 numeric traits | Matthias Kretz | 2022-05-09 | 2022-05 | P2551R0 | LEWG Library Evolution |
| P2558R1 | Add @, $, and ` to the basic character set | Steve Downey | 2022-05-11 | 2022-05 | P2558R0 | SG16 Unicode,SG22 Compatability |
| P2577R1 | C++ Modules Discovery in Prebuilt Library Releases | Daniel Ruoso | 2022-04-30 | 2022-05 | P2577R0 | SG15 Tooling |
| P2577R2 | C++ Modules Discovery in Prebuilt Library Releases | Daniel Ruoso | 2022-05-17 | 2022-05 | P2577R1 | SG15 Tooling |
| P2580R0 | Tuple protocol for C-style arrays T[N] | Paolo Di Giglio | 2022-05-22 | 2022-05 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2581R0 | Specifying the Interoperability of Binary Module Interface Files | Daniel Ruoso | 2022-04-26 | 2022-05 | SG15 Tooling | |
| P2582R0 | Wording for class template argument deduction from inherited constructors | Timur Doumler | 2022-05-15 | 2022-05 | CWG Core | |
| P2584R0 | A More Composable from_chars | Corentin Jabot | 2022-05-12 | 2022-05 | LEWG Library Evolution | |
| P2585R0 | Improving default container formatting | Barry Revzin | 2022-05-15 | 2022-05 | LEWG Library Evolution | |
| P2587R0 | to_string or not to_string | Victor Zverovich | 2022-05-14 | 2022-05 | SG16 Unicode,LEWGI SG18: LEWG Incubator | |
| P2588R0 | Relax std::barrier phase completion step guarantees | Gonzalo Brito | 2022-05-22 | 2022-05 | SG1 Concurrency and Parallelism,LEWG Library Evolution | |
| P2589R0 | static operator[] | Nevin Liber | 2022-05-12 | 2022-05 | EWG Evolution | |
| P2590R0 | Explicit lifetime management | Timur Doumler | 2022-05-16 | 2022-05 | CWG Core,LWG Library | |
| P2591R0 | Concatenation of strings and string views | Giuseppe D'Angelo | 2022-05-19 | 2022-05 | LEWG Library Evolution | |
| P2592R0 | Hashing support for std::chrono value classes | Giuseppe D'Angelo | 2022-05-20 | 2022-05 | LEWG Library Evolution | |
| P2593R0 | Allowing static_assert(false) | Barry Revzin | 2022-05-21 | 2022-05 | EWG Evolution |
By Administrator | Apr 25, 2022 08:06 AM | Tags: None
The 2022-04 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| P0429R8 | A Standard flat_map | Zach Laine | 2022-04-18 | 2022-04 | P0429R7 | LWG Library |
| P0957R7 | Proxy: A Polymorphic Programming Library | Mingxin Wang | 2022-04-19 | 2022-04 | P0957R6 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution |
| P1061R2 | Structured Bindings can introduce a Pack | Barry Revzin | 2022-04-22 | 2022-04 | P1061R1 | EWG Evolution |
| P1169R4 | static operator() | Barry Revzin | 2022-04-10 | 2022-04 | P1169R3 | CWG Core |
| P1222R3 | A Standard flat_set | Zach Laine | 2022-04-18 | 2022-04 | P1222R2 | LWG Library |
| P1223R4 | find_last | Zach Laine | 2022-04-15 | 2022-04 | P1223R3 | LEWG Library Evolution,LWG Library |
| P1467R9 | Extended floating-point types and standard names | David Olsen | 2022-04-22 | 2022-04 | P1467R8 | CWG Core,LWG Library |
| P1642R8 | Freestanding Library: Easy [utilities], [ranges], and [iterators] | Ben Craig | 2022-04-13 | 2022-04 | P1642R7 | LWG Library |
| P1673R7 | A free function linear algebra interface based on the BLAS | Mark Hoemmen | 2022-04-14 | 2022-04 | P1673R6 | LEWG Library Evolution |
| P1674R1 | Evolving a Standard C++ Linear Algebra Library from the BLAS | Mark Hoemmen | 2022-04-14 | 2022-04 | P1674R0 | LEWG Library Evolution |
| P1684R2 | mdarray: An Owning Multidimensional Array Analog of mdspan | Christian Trott | 2022-04-24 | 2022-04 | P1684R1 | LEWG Library Evolution |
| P1967R5 | #embed - a simple, scannable preprocessor-based resource acquisition method | JeanHeyd Meneide | 2022-04-13 | 2022-04 | P1967R4 | EWG Evolution |
| P2071R2 | Named universal character escapes | Tom Honermann | 2022-03-27 | 2022-04 | P2071R1 | CWG Core |
| P2093R14 | Formatted output | Victor Zverovich | 2022-03-25 | 2022-04 | P2093R13 | LWG Library |
| P2174R1 | Compound Literals | Zhihao Yuan | 2022-04-15 | 2022-04 | P2174R0 | EWG Evolution |
| P2198R5 | Freestanding Feature-Test Macros and Implementation-Defined Extensions | Ben Craig | 2022-04-13 | 2022-04 | P2198R4 | LWG Library |
| P2266R3 | Simpler implicit move | Arthur O'Dwyer | 2022-03-26 | 2022-04 | P2266R2 | CWG Core |
| P2278R3 | cbegin should always return a constant iterator | Barry Revzin | 2022-04-11 | 2022-04 | P2278R2 | LEWG Library Evolution |
| P2280R4 | Using unknown references in constant expressions | Barry Revzin | 2022-04-10 | 2022-04 | P2280R3 | CWG Core |
| P2286R7 | Formatting Ranges | Barry Revzin | 2022-04-22 | 2022-04 | P2286R6 | LEWG Library Evolution |
| P2300R5 | `std::execution` | Michał Dominiak | 2022-04-22 | 2022-04 | P2300R4 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2302R4 | std::ranges::contains | Christopher Di Bella | 2022-04-16 | 2022-04 | P2302R3 | All of WG21 |
| P2305R5 | Type inference for object definitions | Jens Gustedt | 2022-04-08 | 2022-04 | P2305R4 | SG22 Compatability |
| P2322R6 | ranges::fold | Barry Revzin | 2022-04-22 | 2022-04 | P2322R5 | LEWG Library Evolution |
| P2400R3 | Library Evolution Report: 2021-09-28 to 2022-01-25 | Bryce Adelstein Lelbach | 2022-04-21 | 2022-04 | P2400R2 | All of WG21 |
| P2408R5 | Ranges iterators as inputs to non-Ranges algorithms | David Olsen | 2022-04-22 | 2022-04 | P2408R4 | LWG Library |
| P2472R2 | make function_ref more functional | Jarrad J. Waterloo | 2022-04-14 | 2022-04 | P2472R1 | LEWG Library Evolution |
| P2505R2 | Monadic Functions for std::expected | Jeff Garland | 2022-04-15 | 2022-04 | P2505R1 | LEWG Library Evolution,LWG Library |
| P2510R2 | Formatting pointers | Mark de Wever | 2022-04-14 | 2022-04 | P2510R1 | LWG Library |
| P2538R1 | ADL-proof std::projected | Arthur O'Dwyer | 2022-04-01 | 2022-04 | P2538R0 | LEWG Library Evolution,LWG Library |
| P2539R1 | Should the output of std::print to a terminal be synchronized with the underlying stream? | Victor Zverovich | 2022-04-11 | 2022-04 | P2539R0 | LEWG Library Evolution |
| P2542R1 | views::concat | Hui Xie | 2022-03-28 | 2022-04 | P2542R0 | SG9 Ranges,LEWG Library Evolution |
| P2546R1 | Debugging Support | René Ferdinand Rivera Morell | 2022-04-10 | 2022-04 | P2546R0 | LEWG Library Evolution |
| P2559R0 | Plan for Concurrency Technical Specification Version 2 | Bryce Adelstein Lelbach | 2022-04-01 | 2022-04 | SG1 Concurrency and Parallelism,EWG Evolution,LEWG Library Evolution | |
| P2573R0 | = delete("should have a reason"); | Yihe Li | 2022-04-14 | 2022-04 | EWGI SG17: EWG Incubator,EWG Evolution | |
| P2574R0 | 2022-05 Library Evolution Polls | Bryce Adelstein Lelbach | 2022-04-22 | 2022-04 | LEWG Library Evolution | |
| P2576R0 | The constexpr specifier for object definitions | Jens Gustedt | 2022-04-08 | 2022-04 | SG22 Compatability | |
| P2577R0 | C++ Modules Discovery in Prebuilt Library Releases | Daniel Ruoso | 2022-04-11 | 2022-04 | SG15 Tooling |
By Administrator | Mar 21, 2022 11:51 AM | Tags: None
The 2022-03 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4908 | Working Draft, C++ Extensions for Library Fundamentals, Version 3 | Thomas Köppe | 2022-02-19 | 2022-03 | All of WG21 | |
| N4909 | Editor's Report: C++ Extensions for Library Fundamentals, Version 3 | Thomas Köppe | 2022-02-19 | 2022-03 | All of WG21 | |
| N4910 | Working Draft, Standard for Programming Language C++ | Thomas Köppe | 2022-03-17 | 2022-03 | All of WG21 | |
| N4911 | Editors' Report - Programming Languages - C++ | Thomas Köppe | 2022-03-17 | 2022-03 | All of WG21 | |
| P0009R16 | MDSPAN | Christian Trott | 2022-03-15 | 2022-03 | P0009R15 | LWG Library |
| P0957R6 | Proxy: A Polymorphic Programming Library | Mingxin Wang | 2022-03-15 | 2022-03 | P0957R5 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution |
| P1083R5 | Move resource_adaptor from Library TS to the C++ WP | Pablo Halpern | 2022-02-24 | 2022-03 | P1083R4 | LEWG Library Evolution |
| P1684R1 | mdarray: An Owning Multidimensional Array Analog of mdspan | Christian Trott | 2022-03-20 | 2022-03 | P1684R0 | LEWG Library Evolution |
| P1708R6 | Simple Statistical Functions | Richard Dosselman | 2022-03-15 | 2022-03 | P1708R5 | SG6 Numerics,SG19 Machine Learning,LEWG Library Evolution |
| P1839R4 | Accessing Object Representations | Krystian Stasiowski | 2022-03-16 | 2022-03 | P1839R3 | CWG Core |
| P2264R3 | Make assert() macro user friendly for C and C++ | Peter Sommerlad | 2022-02-27 | 2022-03 | P2264R2 | SG22 Compatability,LEWG Library Evolution |
| P2290R3 | Delimited escape sequences | Corentin Jabot | 2022-02-25 | 2022-03 | P2290R2 | SG22 Compatability,CWG Core |
| P2465R3 | Standard Library Modules std and std.compat | Stephan T. Lavavej | 2022-03-11 | 2022-03 | P2465R2 | CWG Core,LWG Library |
| P2510R1 | Formatting pointers | Mark de Wever | 2022-03-20 | 2022-03 | P2510R0 | LWG Library |
| P2511R1 | Beyond operator(): NTTP callables in type-erased call wrappers | Zhihao Yuan | 2022-03-15 | 2022-03 | P2511R0 | LEWG Library Evolution |
| P2521R2 | Contract support -- Working Paper | Andrzej Krzemieński | 2022-03-15 | 2022-03 | P2521R1 | SG21 Contracts |
| P2539R0 | Should the output of std::print to a terminal be synchronized with the underlying stream? | Victor Zverovich | 2022-03-11 | 2022-03 | LEWG Library Evolution | |
| P2540R1 | Empty Product for certain Views | Steve Downey | 2022-03-14 | 2022-03 | P2540R0 | SG9 Ranges,LEWG Library Evolution |
| P2553R1 | Make mdspan size_type controllable | Christian Trott | 2022-03-15 | 2022-03 | P2553R0 | LEWG Library Evolution,LWG Library |
| P2555R1 | Naming improvements for std::execution | Jens Maurer | 2022-03-13 | 2022-03 | P2555R0 | LEWG Library Evolution |
| P2558R0 | Add @, $, and ` to the basic character set | Steve Downey | 2022-03-16 | 2022-03 | SG16 Unicode,EWGI SG17: EWG Incubator,SG22 Compatability | |
| P2560R0 | Comparing value- and type-based reflection | Matúš Chochlı́k | 2022-02-23 | 2022-03 | SG7 Reflection | |
| P2562R0 | constexpr Stable Sorting | Oliver Rosten | 2022-03-09 | 2022-03 | LEWG Library Evolution,LWG Library | |
| P2564R0 | consteval needs to propagate up | Barry Revzin | 2022-03-14 | 2022-03 | EWG Evolution | |
| P2565R0 | Supporting User-Defined Attributes | Bret Brown | 2022-03-15 | 2022-03 | SG15 Tooling | |
| P2568R0 | Proposal of std::map::at_ptr | Andrew Tomazos | 2022-03-18 | 2022-03 | LEWG Library Evolution | |
| P2569R0 | *_HAS_SUBNORM==0 implies what? | Fred Tydeman | 2022-03-18 | 2022-03 | SG6 Numerics,SG22 Compatability |
By René Ferdinand Rivera Morell | Feb 24, 2022 10:57 AM | Tags: None
Should the C++ standard change to include its ecosystem?
Open letter for new C++ scope/charter
by René Ferdinand Rivera Morell
From the letter:
We are writing asking for consideration towards changes to the wording of the "ISO/IEC JTC1/SC22/WG21 STATEMENT OF SCOPE". Which is currently stated as:
Development and maintenance of ISO/IEC Standards, Technical Specifications, and Technical Reports related to the programming language C++.
Reddit discussion here.
By Administrator | Feb 22, 2022 08:23 AM | Tags: None
The 2022-02 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4903 | PL22.16/WG21 agenda: 7 February 2022, Virtual Meeting | John Spicer | 2022-01-24 | 2022-02 | All of WG21 | |
| N4904 | WG21 admin telecon meetings: 2022 summer and autumn (revision 1) | Herb Sutter | 2022-01-24 | 2022-02 | All of WG21 | |
| N4905 | WG21 2022-01 Admin telecon minutes | Nina Ranns | 2022-02-01 | 2022-02 | All of WG21 | |
| N4906 | Transactional Memory TS2 | Michael Wong | 2022-02-18 | 2022-02 | All of WG21 | |
| N4907 | WG21 2022-02 Virtual Meeting Minutes of Meeting | Nina Ranns | 2022-02-17 | 2022-02 | All of WG21 | |
| P0009R15 | MDSPAN | Christian Trott | 2022-02-14 | 2022-02 | P0009R14 | LWG Library |
| P0323R12 | std::expected | JF Bastien | 2022-02-21 | 2022-02 | P0323R11 | LWG Library |
| P0447R19 | Introduction of std::hive to the standard library | Matt Bentley | 2022-02-17 | 2022-02 | P0447R18 | SG14 Low Latency,LEWG Library Evolution,All of WG21 |
| P0561R6 | An RAII Interface for Deferred Reclamation | Geoffrey Romer | 2022-02-02 | 2022-02 | P0561R5 | LWG Library |
| P0792R7 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2022-02-14 | 2022-02 | P0792R6 | LEWG Library Evolution,LWG Library |
| P0792R8 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2022-02-16 | 2022-02 | P0792R7 | LEWG Library Evolution,LWG Library |
| P0957R5 | Proxy: A Polymorphic Programming Library | Mingxin Wang | 2022-02-14 | 2022-02 | P0957R4 | LEWGI SG18: LEWG Incubator |
| P1018R15 | C++ Language Evolution status pandemic edition 2022/01–2022/02 | JF Bastien | 2022-02-14 | 2022-02 | P1018R14 | EWG Evolution,All of WG21 |
| P1202R4 | Asymmetric Fences | David Goldblatt | 2022-02-14 | 2022-02 | P1202R3 | LEWG Library Evolution,LWG Library |
| P1223R3 | find_last | Zach Laine | 2022-02-14 | 2022-02 | P1223R2 | LEWG Library Evolution,LWG Library |
| P1478R7 | Byte-wise atomic memcpy | Hans Boehm | 2022-02-05 | 2022-02 | P1478R6 | LWG Library |
| P1664R7 | reconstructible_range - a concept for putting ranges back together | JeanHeyd Meneide | 2022-02-15 | 2022-02 | P1664R6 | SG9 Ranges,LEWG Library Evolution |
| P1774R6 | Portable assumptions | Timur Doumler | 2022-02-15 | 2022-02 | P1774R5 | CWG Core |
| P1839R3 | Accessing Object Representations | Krystian Stasiowski | 2022-02-18 | 2022-02 | P1839R2 | CWG Core |
| P1841R3 | Wording for Individually Specializable Numeric Traits | Walter E Brown | 2022-02-14 | 2022-02 | P1841R2 | LWG Library |
| P1885R10 | Naming Text Encodings to Demystify Them | Corentin Jabot | 2022-02-14 | 2022-02 | P1885R9 | LEWG Library Evolution |
| P2093R13 | Formatted output | Victor Zverovich | 2022-02-09 | 2022-02 | P2093R12 | LWG Library |
| P2214R2 | A Plan for C++23 Ranges | Barry Revzin | 2022-02-18 | 2022-02 | P2214R1 | LEWG Library Evolution |
| P2416R2 | Presentation of requirements in the standard library | Jens Maurer | 2022-02-14 | 2022-02 | P2416R1 | LWG Library |
| P2438R2 | std::string::substr() && | Federico Kircheis | 2022-02-04 | 2022-02 | P2438R1 | LWG Library |
| P2441R2 | views::join_with | Barry Revzin | 2022-01-28 | 2022-02 | P2441R1 | LEWG Library Evolution |
| P2446R2 | views::as_rvalue | Barry Revzin | 2022-02-14 | 2022-02 | P2446R1 | LEWG Library Evolution |
| P2448R2 | Relaxing some constexpr restrictions | Barry Revzin | 2022-01-27 | 2022-02 | P2448R1 | CWG Core |
| P2452R0 | 2021 October Library Evolution and Concurrency Polls on Networking and Executors | Bryce Adelstein Lelbach | 2022-02-15 | 2022-02 | LEWG Library Evolution | |
| P2453R0 | 2021 October Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2022-02-15 | 2022-02 | SG4 Networking,LEWG Library Evolution | |
| P2458R1 | 2022 January Library Evolution Polls | Bryce Adelstein Lelbach | 2022-01-26 | 2022-02 | P2458R0 | LEWG Library Evolution |
| P2459R0 | 2022 January Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2022-02-15 | 2022-02 | LEWG Library Evolution | |
| P2465R2 | Standard Library Modules std and std.compat | Stephan T. Lavavej | 2022-02-02 | 2022-02 | P2465R1 | CWG Core,LWG Library |
| P2467R1 | Support exclusive mode for fstreams | Jonathan Wakely | 2022-02-17 | 2022-02 | P2467R0 | LWG Library |
| P2472R1 | make function_ref more functional | Jarrad J. Waterloo | 2022-02-15 | 2022-02 | P2472R0 | LEWG Library Evolution |
| P2495R0 | Interfacing stringstreams with string_view | Michael Hava | 2022-02-13 | 2022-02 | LEWG Library Evolution | |
| P2502R1 | std::generator: Synchronous Coroutine Generator for Ranges | Casey Carter | 2022-01-25 | 2022-02 | P2502R0 | LEWG Library Evolution |
| P2505R1 | Monadic Functions for std::expected | Jeff Garland | 2022-02-15 | 2022-02 | P2505R0 | LEWG Library Evolution,LWG Library |
| P2506R0 | std::lazy: a coroutine for deferred execution | Casey Carter | 2022-02-02 | 2022-02 | LEWG Library Evolution | |
| P2513R1 | char8_t Compatibility and Portability Fix | JeanHeyd Meneide | 2022-02-14 | 2022-02 | P2513R0 | EWG Evolution |
| P2521R1 | Contract support -- Working Paper | Andrzej Krzemieński | 2022-02-15 | 2022-02 | P2521R0 | SG21 Contracts |
| P2528R0 | C/C++ Identifier Security using Unicode Standard Annex 39 | Reini Urban | 2022-01-22 | 2022-02 | SG16 Unicode,EWG Evolution,CWG Core | |
| P2529R0 | generator should have T&& reference_type | Mathias Stearn | 2022-01-25 | 2022-02 | LEWG Library Evolution | |
| P2530R0 | Why Hazard Pointers should be in C++26 | Maged Michael | 2022-02-14 | 2022-02 | SG1 Concurrency and Parallelism | |
| P2531R0 | C++ Standard Library Issues to be moved in Virtual Plenary, Feb. 2022 | Jonathan Wakely | 2022-01-31 | 2022-02 | All of WG21 | |
| P2532R0 | Removing exception_ptr from the Receiver Concepts | Eric Niebler | 2022-02-01 | 2022-02 | LEWG Library Evolution | |
| P2533R0 | Core Language Working Group "ready" Issues for the February, 2022 Meeting | William M. (Mike) Miller | 2022-02-21 | 2022-02 | All of WG21 | |
| P2534R0 | Slides: function_ref in the wild (P0792R7 presentation) | Zhihao Yuan | 2022-02-16 | 2022-02 | LEWG Library Evolution | |
| P2535R0 | Message fences | Olivier Giroux | 2022-02-02 | 2022-02 | SG1 Concurrency and Parallelism | |
| P2536R0 | Distributing C++ Module Libraries with dependencies json files. | Olga Arkhipova | 2022-02-03 | 2022-02 | SG15 Tooling | |
| P2537R0 | Relax va_start Requirements to Match C | JeanHeyd Meneide | 2022-02-14 | 2022-02 | LEWG Library Evolution | |
| P2538R0 | ADL-proof std::projected | Arthur O'Dwyer | 2022-02-15 | 2022-02 | LEWG Library Evolution,LWG Library | |
| P2540R0 | Empty Product for certain Views | Steve Downey | 2022-02-15 | 2022-02 | SG9 Ranges | |
| P2541R0 | Consider renaming remove_quals | Corentin Jabot | 2022-02-15 | 2022-02 | SG22 Compatability | |
| P2542R0 | views::concat | Hui Xie | 2022-02-18 | 2022-02 | SG9 Ranges,LEWG Library Evolution | |
| P2544R0 | C++ exceptions are becoming more and more problematic | Thomas Neumann | 2022-02-12 | 2022-02 | EWGI SG17: EWG Incubator | |
| P2545R0 | Why RCU Should be in C++26 | Paul E. McKenney | 2022-02-14 | 2022-02 | SG1 Concurrency and Parallelism,LEWG Library Evolution | |
| P2546R0 | Debugging Support | René Ferdinand Rivera Morell | 2022-02-14 | 2022-02 | SG15 Tooling,LEWG Library Evolution | |
| P2547R0 | Language support for customisable functions | Lewis Baker | 2022-02-15 | 2022-02 | EWG Evolution | |
| P2549R0 | std::unexpected should have error() as member accessor | Yihe Li | 2022-02-13 | 2022-02 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2550R0 | ranges::copy should say output_iterator somewhere | Barry Revzin | 2022-02-16 | 2022-02 | LWG Library | |
| P2551R0 | Clarify intent of P1841 numeric traits | Matthias Kretz | 2022-02-14 | 2022-02 | LEWG Library Evolution | |
| P2552R0 | On the ignorability of standard attributes | Timur Doumler | 2022-02-16 | 2022-02 | EWG Evolution | |
| P2553R0 | Make mdspan size_type controllable | Christian Trott | 2022-02-14 | 2022-02 | LEWG Library Evolution | |
| P2554R0 | C-Array Interoperability of MDSpan | Christian Trott | 2022-02-14 | 2022-02 | LEWG Library Evolution | |
| P2555R0 | Naming improvements for std::execution | Jens Maurer | 2022-02-15 | 2022-02 | LEWG Library Evolution | |
| P2557R0 | WG21 2022-02 Virtual Meeting Record of Discussion | Nina Ranns | 2022-02-17 | 2022-02 | All of WG21 |