June 16-21, Sofia, Bulgaria
By Blog Staff | Apr 27, 2023 09:06 AM | Tags: None
Over the past week, we ran our 2023 annual global C++ developer survey. Thank you to everyone who responded. As promised, here is a summary of the results:
CppDevSurvey-2023-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 | Apr 25, 2023 02:50 PM | Tags: None
The 2023-04 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4943 | WG21 February 2023 Issaquah Minutes of Meeting | Nina Ranns | 2023-03-06 | 2023-04 | All of WG21 | |
| N4944 | Working Draft, Standard for Programming Language C++ | Thomas Köppe | 2023-03-22 | 2023-04 | All of WG21 | |
| N4945 | Editors' Report - Programming Languages - C++ | Thomas Köppe | 2023-03-23 | 2023-04 | All of WG21 | |
| P0876R13 | fiber_context - fibers without scheduler | Oliver Kowalke | 2023-03-02 | 2023-04 | P0876R12 | LEWG Library Evolution |
| P1144R7 | std::is_trivially_relocatable | Arthur O'Dwyer | 2023-03-10 | 2023-04 | P1144R6 | EWGI SG17: EWG Incubator,LEWGI SG18: LEWG Incubator,EWG Evolution,LEWG Library Evolution |
| P1673R12 | A free function linear algebra interface based on the BLAS | Mark Hoemmen | 2023-03-14 | 2023-04 | P1673R11 | LWG Library |
| P1885R11 | Naming Text Encodings to Demystify Them | Corentin Jabot | 2023-03-22 | 2023-04 | P1885R10 | LWG Library |
| P2022R1 | Rangified version of lexicographical_compare_three_way | Ran Regev | 2023-03-11 | 2023-04 | P2022R0 | SG9 Ranges,LEWG Library Evolution |
| P2287R2 | Designated-initializers for base classes | Barry Revzin | 2023-03-12 | 2023-04 | P2287R1 | EWG Evolution |
| P2407R3 | Freestanding Library: Partial Classes | Emil Meissner | 2023-03-05 | 2023-04 | P2407R2 | LWG Library |
| P2447R3 | std::span over an initializer list | Arthur O'Dwyer | 2023-03-14 | 2023-04 | P2447R2 | LEWG Library Evolution |
| P2530R3 | Hazard Pointers for C++26 | Maged Michael | 2023-03-02 | 2023-04 | P2530R2 | LWG Library |
| P2545R4 | Read-Copy Update (RCU) | Paul E. McKenney | 2023-03-08 | 2023-04 | P2545R3 | LWG Library |
| P2630R3 | Submdspan | Christian Trott | 2023-03-15 | 2023-04 | P2630R2 | LEWG Library Evolution,LWG Library |
| P2690R1 | Presentation for C++17 parallel algorithms and P2300 | Ruslan Arutyunyan | 2023-03-16 | 2023-04 | P2690R0 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2746R1 | Deprecate and Replace Fenv Rounding Modes | Hans Boehm | 2023-03-14 | 2023-04 | P2746R0 | SG6 Numerics,LEWG Library Evolution |
| P2752R1 | Static storage for braced initializers | Arthur O'Dwyer | 2023-03-10 | 2023-04 | P2752R0 | EWG Evolution,CWG Core |
| P2757R1 | Type checking format args | Barry Revzin | 2023-03-13 | 2023-04 | P2757R0 | LEWG Library Evolution |
| P2780R0 | Caller-side precondition checking, and Eval_and_throw | Ville Voutilainen | 2023-03-02 | 2023-04 | SG21 Contracts | |
| P2806R1 | do expressions | Barry Revzin | 2023-03-12 | 2023-04 | P2806R0 | EWG Evolution |
| P2809R0 | Trivial infinite loops are not Undefined Behavior | JF Bastien | 2023-03-14 | 2023-04 | SG1 Concurrency and Parallelism,SG22 Compatability,EWG Evolution | |
| P2811R0 | Contract Violation Handlers | Joshua Berne | 2023-03-20 | 2023-04 | SG21 Contracts | |
| P2811R1 | Contract Violation Handlers | Joshua Berne | 2023-03-20 | 2023-04 | P2811R0 | SG21 Contracts |
| P2817R0 | The idea behind the contracts MVP | Andrzej Krzemieński | 2023-03-05 | 2023-04 | SG21 Contracts | |
| P2818R0 | Uniform Call Syntax for explicit-object member functions | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2819R0 | Add tuple protocol to complex | Michael Florian Hava | 2023-02-23 | 2023-04 | SG6 Numerics,LEWG Library Evolution | |
| P2824R0 | WG21 February 2023 Issaquah meeting Record of Discussion | Nina Ranns | 2023-03-06 | 2023-04 | All of WG21 | |
| P2825R0 | calltarget(unevaluated-call-expression) | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2826R0 | Replacement functions | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2827R0 | Floating-point overflow and underflow in from_chars (LWG 3081) | Zhihao Yuan | 2023-03-14 | 2023-04 | LEWG Library Evolution,LWG Library | |
| P2828R0 | Copy elision for direct-initialization with a conversion function (Core issue 2327) | Brian Bi | 2023-03-13 | 2023-04 | CWG Core | |
| P2830R0 | constexpr type comparison | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2833R0 | Freestanding Library: inout expected span | Ben Craig | 2023-03-13 | 2023-04 | LEWG Library Evolution | |
| P2836R0 | std::const_iterator often produces an unexpected type | Christopher Di Bella | 2023-03-20 | 2023-04 | SG9 Ranges,LEWG Library Evolution,LWG Library | |
| P2838R0 | Unconditional contract violation handling of any kind is a serious problem | Ville Voutilainen | 2023-03-22 | 2023-04 | SG21 Contracts |
By Administrator | Feb 20, 2023 02:31 PM | Tags: None
The 2023-02 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4940 | WG21 2022-11 Kona Minutes of Meeting V2 | Nina Ranns | 2023-01-23 | 2023-02 | All of WG21 | |
| N4941 | INCITS C++/WG21 Agenda: 6-11 February 2023, Issaquah, WA USA | John Spicer | 2023-01-21 | 2023-02 | All of WG21 | |
| N4942 | WG21 2023-01 Admin telecon minutes | Nina Ranns | 2023-02-02 | 2023-02 | All of WG21 | |
| P0290R3 | apply() for synchronized_value | Anthony Williams | 2023-01-17 | 2023-02 | P0290R2 | LWG Library |
| P0290R4 | apply() for synchronized_value | Anthony Williams | 2023-02-16 | 2023-02 | P0290R3 | LWG Library |
| P0447R21 | Introduction of std::hive to the standard library | Matt Bentley | 2023-02-11 | 2023-02 | P0447R20 | SG14 Low Latency,LEWG Library Evolution,All of WG21 |
| P0493R4 | Atomic maximum/minimum | Al Grant | 2023-02-15 | 2023-02 | P0493R3 | SG1 Concurrency and Parallelism,LWG Library |
| P0792R13 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2023-02-09 | 2023-02 | P0792R12 | LWG Library |
| P0792R14 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2023-02-09 | 2023-02 | P0792R13 | LWG Library |
| P0870R5 | A proposal for a type trait to detect narrowing conversions | Giuseppe D'Angelo | 2023-02-15 | 2023-02 | P0870R4 | SG6 Numerics,LEWG Library Evolution,LWG Library |
| P0876R12 | fiber_context - fibers without scheduler | Oliver Kowalke | 2023-02-09 | 2023-02 | P0876R11 | LEWG Library Evolution |
| P1061R4 | Structured Bindings can introduce a Pack | Barry Revzin | 2023-02-15 | 2023-02 | P1061R3 | EWG Evolution |
| P1708R7 | Basic Statistics | Richard Dosselmann | 2023-02-06 | 2023-02 | P1708R6 | SG6 Numerics,SG14 Low Latency,LEWG Library Evolution,LWG Library |
| P1715R1 | Loosen restrictions on "_t" typedefs and "_v" values. | Jorg Brown | 2023-02-06 | 2023-02 | P1715R0 | LEWG Library Evolution,CWG Core,LWG Library |
| P1759R5 | Native handles and file streams | Elias Kosunen | 2023-02-12 | 2023-02 | P1759R4 | LWG Library |
| P1854R4 | Making non-encodable string literals ill-formed | Corentin Jabot | 2023-02-08 | 2023-02 | P1854R3 | EWG Evolution |
| P1928R3 | Merge data-parallel types from the Parallelism TS 2 | Matthias Kretz | 2023-02-03 | 2023-02 | P1928R2 | LEWG Library Evolution |
| P2022R0 | Rangified version of lexicographical_compare_three_way | Ran Regev | 2023-02-06 | 2023-02 | SG9 Ranges,LEWG Library Evolution | |
| P2047R6 | An allocator-aware optional type | Nina Ranns | 2023-02-02 | 2023-02 | P2047R5 | LEWG Library Evolution |
| P2159R1 | A Big Decimal Type | Bill Seymour | 2023-02-06 | 2023-02 | P2159R0 | SG6 Numerics |
| P2300R6 | `std::execution` | Michał Dominiak | 2023-01-19 | 2023-02 | P2300R5 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2308R0 | Template parameter initialization | S. Davis Herring | 2023-02-13 | 2023-02 | CWG Core | |
| P2338R4 | Freestanding Library: Character primitives and the C library | Ben Craig | 2023-02-09 | 2023-02 | P2338R3 | LWG Library |
| P2355R1 | Postfix fold expressions | S. Davis Herring | 2023-02-13 | 2023-02 | P2355R0 | EWG Evolution |
| P2361R6 | Unevaluated strings | Corentin Jabot | 2023-02-12 | 2023-02 | P2361R5 | EWG Evolution |
| P2363R5 | Extending associative containers with the remaining heterogeneous overloads | Konstantin Boyarinov | 2023-02-10 | 2023-02 | P2363R4 | LWG Library |
| P2406R3 | Add lazy_counted_iterator | Yehezkel Bernat | 2023-02-06 | 2023-02 | P2406R2 | SG9 Ranges,LEWG Library Evolution |
| P2406R4 | Add lazy_counted_iterator | Yehezkel Bernat | 2023-02-07 | 2023-02 | P2406R3 | SG9 Ranges,LEWG Library Evolution |
| P2406R5 | Add lazy_counted_iterator | Yehezkel Bernat | 2023-02-08 | 2023-02 | P2406R4 | SG9 Ranges,LEWG Library Evolution |
| P2495R2 | Interfacing stringstreams with string_view | Michael Hava | 2023-02-14 | 2023-02 | P2495R1 | LWG Library |
| P2497R0 | Testing for success or failure of charconv functions | Jonathan Wakely | 2023-01-25 | 2023-02 | LEWG Library Evolution | |
| P2521R3 | Contract support -- Record of SG21 consensus | Andrzej Krzemieński | 2023-02-10 | 2023-02 | P2521R2 | SG21 Contracts |
| P2527R2 | std::variant_alternative_index and std::tuple_element_index | Alex Christensen | 2023-01-27 | 2023-02 | P2527R1 | LWG Library |
| P2545R3 | Why RCU Should be in C++26 | Paul E. McKenney | 2023-02-15 | 2023-02 | P2545R2 | LWG Library |
| P2558R2 | Add @, $, and ` to the basic character set | Steve Downey | 2023-02-08 | 2023-02 | P2558R1 | SG16 Unicode,SG22 Compatability |
| P2572R1 | std::format() fill character allowances | Tom Honermann | 2023-02-08 | 2023-02 | P2572R0 | LWG Library |
| P2588R3 | Relax std::barrier phase completion step guarantees | Gonzalo Brito | 2023-02-07 | 2023-02 | P2588R2 | LWG Library |
| P2591R3 | Concatenation of strings and string views | Giuseppe D'Angelo | 2023-01-30 | 2023-02 | P2591R2 | LEWG Library Evolution |
| P2592R3 | Hashing support for std::chrono value classes | Giuseppe D'Angelo | 2023-02-10 | 2023-02 | P2592R2 | LEWG Library Evolution,LWG Library |
| P2593R1 | Allowing static_assert(false) | Barry Revzin | 2023-01-19 | 2023-02 | P2593R0 | EWG Evolution |
| P2594R1 | Slides: Allow programmer to control coroutine elision (P2477R3 Presentation)) | Chuanqi Xu | 2023-02-07 | 2023-02 | P2594R0 | EWG Evolution |
| P2609R2 | Relaxing Ranges Just A Smidge | John Eivind Helset | 2023-01-22 | 2023-02 | P2609R1 | LWG Library |
| P2609R3 | Relaxing Ranges Just A Smidge | John Eivind Helset | 2023-02-10 | 2023-02 | P2609R2 | LWG Library |
| P2616R4 | Making std::atomic notification/wait operations usable in more situations | Lewis Baker | 2023-02-15 | 2023-02 | P2616R3 | LEWG Library Evolution |
| P2621R2 | UB? In my Lexer? | Corentin Jabot | 2023-02-08 | 2023-02 | P2621R1 | SG22 Compatability,EWG Evolution |
| P2641R2 | Checking if a union alternative is active | Barry Revzin | 2023-02-07 | 2023-02 | P2641R1 | LEWG Library Evolution |
| P2652R2 | Disallow user specialization of allocator_traits | Pablo Halpern | 2023-02-08 | 2023-02 | P2652R1 | LWG Library |
| P2655R2 | common_reference_t of reference_wrapper Should Be a Reference Type | Hui Xie | 2023-02-06 | 2023-02 | P2655R1 | SG9 Ranges,LEWG Library Evolution |
| P2655R3 | common_reference_t of reference_wrapper Should Be a Reference Type | Hui Xie | 2023-02-07 | 2023-02 | P2655R2 | SG9 Ranges,LEWG Library Evolution |
| P2656R2 | C++ Ecosystem International Standard | René Ferdinand Rivera Morell | 2023-02-14 | 2023-02 | P2656R1 | SG15 Tooling |
| P2663R1 | Proposal to support interleaved complex values in std::simd | Daniel Towner | 2023-01-25 | 2023-02 | P2663R0 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2664R1 | Proposal to extend std::simd with permutation API | Daniel Towner | 2023-01-25 | 2023-02 | P2664R0 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2670R1 | Non-transient constexpr allocation | Barry Revzin | 2023-02-03 | 2023-02 | P2670R0 | EWG Evolution |
| P2679R2 | Fixing std::start_lifetime_as and std::start_lifetime_as_array | Timur Doumler | 2023-02-14 | 2023-02 | P2679R1 | CWG Core,LWG Library |
| P2681R1 | More Basic Statistics | Richard Dosselmann | 2023-02-06 | 2023-02 | P2681R0 | SG6 Numerics,SG19 Machine Learning |
| P2693R1 | Formatting thread::id and stacktrace | Corentin Jabot | 2023-02-09 | 2023-02 | P2693R0 | LEWG Library Evolution |
| P2695R1 | A proposed plan for contracts in C++ | Timur Doumler | 2023-02-09 | 2023-02 | P2695R0 | SG21 Contracts,EWG Evolution |
| P2724R1 | constant dangling | Jarrad J. Waterloo | 2023-02-13 | 2023-02 | P2724R0 | SG22 Compatability,SG23 Safety and Security |
| P2727R1 | std::iterator_interface | Zach Laine | 2023-02-01 | 2023-02 | P2727R0 | LEWG Library Evolution |
| P2730R1 | variable scope | Jarrad J. Waterloo | 2023-02-14 | 2023-02 | P2730R0 | SG22 Compatability,SG23 Safety and Security |
| P2733R1 | Fix handling of empty specifiers in std::format | Victor Zverovich | 2023-02-06 | 2023-02 | P2733R0 | LEWG Library Evolution |
| P2733R2 | Fix handling of empty specifiers in std::format | Victor Zverovich | 2023-02-09 | 2023-02 | P2733R1 | LEWG Library Evolution |
| P2733R3 | Fix handling of empty specifiers in std::format | Victor Zverovich | 2023-02-10 | 2023-02 | P2733R2 | LEWG Library Evolution,LWG Library |
| P2736R2 | Referencing the Unicode Standard | Corentin Jabot | 2023-02-09 | 2023-02 | P2736R1 | CWG Core |
| P2738R1 | constexpr cast from void*: towards constexpr type-erasure | Corentin Jabot | 2023-02-13 | 2023-02 | P2738R0 | EWG Evolution |
| P2740R1 | Simpler implicit dangling resolution | Jarrad J. Waterloo | 2023-01-15 | 2023-02 | P2740R0 | EWG Evolution |
| P2740R2 | Simpler implicit dangling resolution | Jarrad J. Waterloo | 2023-02-13 | 2023-02 | P2740R1 | SG23 Safety and Security |
| P2741R1 | user-generated static_assert messages | Corentin Jabot | 2023-02-12 | 2023-02 | P2741R0 | EWG Evolution |
| P2742R1 | indirect dangling identification | Jarrad J. Waterloo | 2023-01-15 | 2023-02 | P2742R0 | EWG Evolution |
| P2742R2 | indirect dangling identification | Jarrad J. Waterloo | 2023-02-13 | 2023-02 | P2742R1 | SG23 Safety and Security |
| P2749R0 | Down with "character" | Corentin Jabot | 2023-02-12 | 2023-02 | SG16 Unicode,CWG Core | |
| P2750R1 | C Dangling Reduction | Jarrad J. Waterloo | 2023-01-15 | 2023-02 | P2750R0 | EWG Evolution |
| P2750R2 | C Dangling Reduction | Jarrad J. Waterloo | 2023-02-13 | 2023-02 | P2750R1 | SG22 Compatability,SG23 Safety and Security |
| P2751R1 | Evaluation of Checked Contracts | Joshua Berne | 2023-02-14 | 2023-02 | P2751R0 | SG21 Contracts |
| P2754R0 | Deconstructing Avoiding Uninitialized Reads of Auto Variables | Jake Fevold | 2023-01-24 | 2023-02 | SG23 Safety and Security,EWG Evolution | |
| P2759R1 | DG Opinion on Safety for ISO C++ | Michael Wong | 2023-01-22 | 2023-02 | P2759R0 | SG23 Safety and Security,All of WG21 |
| P2763R1 | `layout_stride` static extents default constructor fix | Christian Trott | 2023-02-07 | 2023-02 | P2763R0 | All of WG21 |
| P2770R0 | Stashing stashing iterators for proper flattening | Tim Song | 2023-01-31 | 2023-02 | LWG Library | |
| P2771R0 | Towards memory safety in C++ | Thomas Neumann | 2023-01-17 | 2023-02 | EWGI SG17: EWG Incubator | |
| P2772R0 | std::integral_constant literals do not suffice - constexpr_t? | Matthias Kretz | 2023-01-17 | 2023-02 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2773R0 | Considerations for Unicode algorithms | Corentin Jabot | 2023-02-16 | 2023-02 | SG16 Unicode | |
| P2779R0 | Make basic_string_view's range construction conditionally explicit | Giuseppe D'Angelo | 2023-02-02 | 2023-02 | SG9 Ranges,SG16 Unicode,LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2782R0 | A proposal for a type trait to detect if value initialization can be achieved by zero-filling | Giuseppe D'Angelo | 2023-02-13 | 2023-02 | SG14 Low Latency,EWG Evolution,LEWG Library Evolution | |
| P2784R0 | Not halting the program after detected contract violation | Andrzej Krzemieński | 2023-02-09 | 2023-02 | SG21 Contracts | |
| P2786R0 | Trivial relocatability options | Mungo Gill | 2023-02-10 | 2023-02 | EWGI SG17: EWG Incubator,LEWGI SG18: LEWG Incubator | |
| P2787R0 | pmr::generator - Promise Types are not Values | Steve Downey | 2023-02-06 | 2023-02 | LEWG Library Evolution,LWG Library | |
| P2787R1 | pmr::generator - Promise Types are not Values | Steve Downey | 2023-02-08 | 2023-02 | P2787R0 | LWG Library |
| P2788R0 | Linkage for modular constants | S. Davis Herring | 2023-02-11 | 2023-02 | EWG Evolution,CWG Core | |
| P2789R0 | C++ Standard Library Ready Issues to be moved in Issaquah, Feb. 2023 | Jonathan Wakely | 2023-02-13 | 2023-02 | All of WG21 | |
| P2790R0 | C++ Standard Library Immediate Issues to be moved in Issaquah, Feb. 2023 | Jonathan Wakely | 2023-02-13 | 2023-02 | All of WG21 | |
| P2791R0 | mandate concepts for new features | Ran Regev | 2023-02-07 | 2023-02 | LEWG Library Evolution,LWG Library,Direction Group | |
| P2796R0 | Core Language Working Group "ready" Issues for the February, 2023 meeting | Jens Maurer | 2023-02-11 | 2023-02 | CWG Core | |
| P2797R0 | Proposed resolution for CWG2692 Static and explicit object member functions with the same par | Gašper Ažman | 2023-02-10 | 2023-02 | EWG Evolution,CWG Core | |
| P2798R0 | Fix layout mappings all static extent default constructor | Christian Trott | 2023-02-09 | 2023-02 | LWG Library | |
| P2799R0 | Closed ranges may be a problem; breaking counted_iterator is not the solution | Tim Song | 2023-02-13 | 2023-02 | SG9 Ranges,LEWG Library Evolution | |
| P2802R0 | Presentation of P1385R7 to LEWG at Issaquah 2023 | Guy Davidson | 2023-02-09 | 2023-02 | LEWG Library Evolution | |
| P2803R0 | std::simd Intro slides | Matthias Kretz | 2023-02-09 | 2023-02 | LEWG Library Evolution | |
| P2805R0 | fiber_context: fibers without scheduler - LEWG slides | Nat Goodspeed | 2023-02-09 | 2023-02 | LEWG Library Evolution | |
| P2806R0 | do expressions | Barry Revzin | 2023-02-14 | 2023-02 | EWG Evolution | |
| P2807R0 | Issaquah Slides for Intel response to std::simd | Daniel Towner | 2023-02-10 | 2023-02 | SG1 Concurrency and Parallelism,LEWG Library Evolution | |
| P2808R0 | Internal linkage in the global module | S. Davis Herring | 2023-02-13 | 2023-02 | EWG Evolution,CWG Core | |
| P2810R0 | is_debugger_present is_replaceable | René Ferdinand Rivera Morell | 2023-02-14 | 2023-02 | SG15 Tooling | |
| P2812R0 | P1673R11 LEWG presentation | Mark Hoemmen | 2023-02-13 | 2023-02 | LEWG Library Evolution | |
| P2815R0 | Slides for presentation on P2188R1 | Anthony Williams | 2023-02-16 | 2023-02 | EWG Evolution | |
| P2816R0 | Safety Profiles: Type-and-resource Safe programming in ISO Standard C++ | Bjarne Stroustrup | 2023-02-16 | 2023-02 | All of WG21 |
By Blog Staff | Feb 13, 2023 03:30 PM | Tags: None
C++23 is done!
C++23 "Pandemic Edition" is complete (Trip report: Winter ISO C++ standards meeting, Issaquah, WA, USA)
by Herb Sutter
From the article:
On Saturday, the ISO C++ committee completed technical work on C++23 in Issaquah, WA, USA! We resolved the remaining international comments on the C++23 draft, and are now producing the final document to be sent out for its international approval ballot (Draft International Standard, or DIS) and final editorial work, to be published later in 2023...
... Per our published C++23 schedule, this was our final meeting to finish technical work on C++23. No features were added or removed, we just handled fit-and-finish issues and primarily focused on finishing addressing the 137 national body comments we received in the summer’s international comment ballot (Committee Draft, or CD). You can find a list of C++23 features here, many of them already implemented in major compilers and libraries. C++23’s main theme was “completing C++20,” and some of the highlights include module “std”, “if consteval,” explicit “this” parameters, still more constexpr, still more CTAD, “[[assume]]”, simplifying implicit move, multidimensional and static “operator[]”, a bunch of Unicode improvements, and Nicolai Josuttis’ personal favorite: fixing the lifetime of temporaries in range-for loops...
By Administrator | Dec 5, 2022 05:26 PM | Tags: None
The 2022-12 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| P0901R10 | Size feedback in operator new | Chris Kennelly | 2022-11-09 | 2022-12 | P0901R9 | EWG Evolution |
| P1018R18 | C++ Language Evolution status pandemic edition 2022/07–2022/11 | JF Bastien | 2022-11-11 | 2022-12 | P1018R17 | EWG Evolution,All of WG21 |
| P1018R19 | C++ Language Evolution status | JF Bastien | 2022-11-15 | 2022-12 | P1018R18 | EWG Evolution,All of WG21 |
| P1028R4 | SG14 status_code and standard error object | Niall Douglas | 2022-10-28 | 2022-12 | P1028R3 | LEWG Library Evolution |
| P1202R5 | Asymmetric Fences | David Goldblatt | 2022-11-11 | 2022-12 | P1202R4 | LWG Library |
| P1264R2 | Revising the wording of stream input operations | Louis Dionne | 2022-12-04 | 2022-12 | P1264R1 | LWG Library |
| P1478R8 | Byte-wise atomic memcpy | Hans Boehm | 2022-11-14 | 2022-12 | P1478R7 | All of WG21 |
| P1619R2 | Functions for Testing Boundary Conditions on Integer Operations | Lisa Lippincott | 2022-11-08 | 2022-12 | P1619R1 | LEWG Library Evolution |
| P2164R8 | views::enumerate | Corentin Jabot | 2022-11-11 | 2022-12 | P2164R7 | LWG Library |
| P2167R3 | Improved Proposed Wording for LWG 2114 (contextually convertible to bool) | Daniel Krügler | 2022-11-02 | 2022-12 | P2167R2 | LWG Library |
| P2248R7 | Enabling list-initialization for algorithms | Giuseppe D'Angelo | 2022-11-13 | 2022-12 | P2248R6 | SG6 Numerics,SG9 Ranges,LEWG Library Evolution |
| P2396R1 | Concurrency TS 2 fixes | David Goldblatt | 2022-11-10 | 2022-12 | P2396R0 | LWG Library |
| P2434R0 | Nondeterministic pointer provenance | S. Davis Herring | 2022-11-16 | 2022-12 | SG22 Compatability,EWG Evolution | |
| P2539R4 | Should the output of std::print to a terminal be synchronized with the underlying stream? | Victor Zverovich | 2022-11-08 | 2022-12 | P2539R3 | LWG Library |
| P2546R3 | Debugging Support | René Ferdinand Rivera Morell | 2022-11-15 | 2022-12 | P2546R2 | LEWG Library Evolution |
| P2548R2 | copyable_function | Michael Florian Hava | 2022-11-08 | 2022-12 | P2548R1 | LEWG Library Evolution |
| P2548R3 | copyable_function | Michael Florian Hava | 2022-11-11 | 2022-12 | P2548R2 | LEWG Library Evolution |
| P2548R4 | copyable_function | Michael Florian Hava | 2022-11-12 | 2022-12 | P2548R3 | LEWG Library Evolution,LWG Library |
| P2552R1 | On the ignorability of standard attributes | Timur Doumler | 2022-11-15 | 2022-12 | P2552R0 | EWG Evolution,CWG Core |
| P2559R1 | Plan for Concurrency Technical Specification Version 2 | Bryce Adelstein Lelbach | 2022-11-16 | 2022-12 | P2559R0 | LEWG Library Evolution,LWG Library |
| P2564R1 | consteval needs to propagate up | Hal Finkel | 2022-11-10 | 2022-12 | P2564R0 | EWG Evolution |
| P2564R2 | consteval needs to propagate up | Hal Finkel | 2022-11-10 | 2022-12 | P2564R1 | EWG Evolution |
| P2564R3 | consteval needs to propagate up | Barry Revzin | 2022-12-04 | 2022-12 | P2564R2 | CWG Core |
| P2570R1 | Contract predicates that are not predicates | Andrzej Krzemieński | 2022-11-14 | 2022-12 | P2570R0 | SG21 Contracts |
| P2588R2 | Relax std::barrier phase completion step guarantees | Gonzalo Brito | 2022-11-07 | 2022-12 | P2588R1 | LEWG Library Evolution |
| P2589R1 | static operator[] | Nevin Liber | 2022-11-10 | 2022-12 | P2589R0 | CWG Core |
| P2602R2 | Poison Pills are Too Toxic | Barry Revzin | 2022-11-07 | 2022-12 | P2602R1 | LEWG Library Evolution |
| P2614R2 | Deprecate numeric_limits::has_denorm | Matthias Kretz | 2022-11-08 | 2022-12 | P2614R1 | LWG Library |
| P2615R1 | Meaningful exports | S. Davis Herring | 2022-11-15 | 2022-12 | P2615R0 | EWG Evolution,CWG Core |
| P2616R1 | Making std::atomic notification/wait operations usable in more situations | Lewis Baker | 2022-11-09 | 2022-12 | P2616R0 | SG1 Concurrency and Parallelism |
| P2616R2 | Making std::atomic notification/wait operations usable in more situations | Lewis Baker | 2022-11-15 | 2022-12 | P2616R1 | SG1 Concurrency and Parallelism |
| P2640R2 | Modules: Inner-scope Namespace Entities: Exported or Not? | Nathan Sidwell | 2022-11-15 | 2022-12 | P2640R1 | EWG Evolution |
| P2644R1 | Final Fix of Broken Range based for Loop Rev 1 | Nicolai Josuttis | 2022-11-13 | 2022-12 | P2644R0 | CWG Core |
| P2647R1 | Permitting static constexpr variables in constexpr functions | Barry Revzin | 2022-11-08 | 2022-12 | P2647R0 | EWG Evolution |
| P2649R0 | 2022-10 Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2022-11-11 | 2022-12 | LEWG Library Evolution | |
| P2650R0 | 2022-11 Library Evolution Polls | Bryce Adelstein Lelbach | 2022-11-17 | 2022-12 | LEWG Library Evolution | |
| P2652R1 | Disallow user specialization of allocator_traits | Pablo Halpern | 2022-11-11 | 2022-12 | P2652R0 | LWG Library |
| P2653R1 | Update Annex E based on Unicode 15.0 UAX 31 | Steve Downey | 2022-10-20 | 2022-12 | P2653R0 | SG16 Unicode,CWG Core |
| P2655R1 | common_reference_t of reference_wrapper Should Be a Reference Type | Hui Xie | 2022-11-11 | 2022-12 | P2655R0 | SG9 Ranges,LEWG Library Evolution |
| P2657R1 | C++ is the next C++ | Jarrad J. Waterloo | 2022-11-14 | 2022-12 | P2657R0 | EWG Evolution |
| P2658R1 | temporary storage class specifiers | Jarrad J. Waterloo | 2022-11-14 | 2022-12 | P2658R0 | EWG Evolution |
| P2659R1 | A Proposal to Publish a Technical Specification for Contracts | Brian Bi | 2022-11-14 | 2022-12 | P2659R0 | SG21 Contracts,EWG Evolution |
| P2664R0 | Proposal to extend std::simd with permutation API | Daniel Towner | 2022-10-21 | 2022-12 | SG1 Concurrency and Parallelism,LEWG Library Evolution,LWG Library,Direction Group | |
| P2674R1 | A trait for implicit lifetime types | Timur Doumler | 2022-11-11 | 2022-12 | P2674R0 | CWG Core,LWG Library |
| P2679R1 | Fixing std::start_lifetime_as and std::start_lifetime_as_array | Timur Doumler | 2022-11-11 | 2022-12 | P2679R0 | CWG Core,LWG Library |
| P2681R0 | More Stats Functions | Richard Dosselmann | 2022-11-07 | 2022-12 | SG6 Numerics,SG19 Machine Learning | |
| P2693R0 | Formatting thread::id and stacktrace | Corentin Jabot | 2022-11-11 | 2022-12 | LEWG Library Evolution | |
| P2695R0 | A proposed plan for contracts in C++ | Timur Doumler | 2022-11-17 | 2022-12 | SG21 Contracts,EWG Evolution | |
| P2696R0 | Introduce Cpp17Swappable as additional convenience requirements | Daniel Krügler | 2022-11-07 | 2022-12 | LWG Library | |
| P2697R0 | Interfacing bitset with string_view | Michael Florian Hava | 2022-11-12 | 2022-12 | LEWG Library Evolution | |
| P2698R0 | Unconditional termination is a serious problem | Bjarne Stroustrup | 2022-11-18 | 2022-12 | SG21 Contracts | |
| P2700R0 | Questions on P2680 "Contracts for C++: Prioritizing Safety" | Timur Doumler | 2022-11-29 | 2022-12 | SG21 Contracts | |
| P2701R0 | Translating Linker Input Files to Module Metadata Files | Daniel Ruoso | 2022-11-08 | 2022-12 | SG15 Tooling | |
| P2702R0 | Specifying Importable Headers | Daniel Ruoso | 2022-11-08 | 2022-12 | SG15 Tooling | |
| P2703R0 | C++ Standard Library Ready Issues to be moved in Kona, Nov. 2022 | Jonathan Wakely | 2022-11-07 | 2022-12 | All of WG21 | |
| P2704R0 | C++ Standard Library Immediate Issues to be moved in Kona, Nov. 2022 | Jonathan Wakely | 2022-11-20 | 2022-12 | All of WG21 | |
| P2705R0 | C++ Library Fundamentals TS Issues to be moved in Kona, Nov. 2022 | Jonathan Wakely | 2022-11-07 | 2022-12 | All of WG21 | |
| P2706R0 | Drafting for US 26-061: Redundant specification for defaulted functions | Jason Merrill | 2022-11-08 | 2022-12 | CWG Core | |
| P2708R0 | No Future Fundamentals TSes | Alisdair Meredith | 2022-11-10 | 2022-12 | LEWG Library Evolution | |
| P2708R1 | No Future Fundamentals TSes | Alisdair Meredith | 2022-11-10 | 2022-12 | P2708R0 | LWG Library |
| P2709R0 | Core Language Working Group "ready" Issues for the November, 2022 meeting | Jens Maurer | 2022-11-11 | 2022-12 | All of WG21 | |
| P2710R0 | Core Language Working Group NB comment resolutions for the November, 2022 meeting | Jens Maurer | 2022-11-11 | 2022-12 | All of WG21 | |
| P2711R0 | Making multi-param (and other converting) constructors of views explicit | Ville Voutilainen | 2022-11-09 | 2022-12 | LEWG Library Evolution,LWG Library | |
| P2711R1 | Making multi-param constructors of views explicit | Ville Voutilainen | 2022-11-11 | 2022-12 | P2711R0 | LWG Library |
| P2712R0 | Classification of Contract-Checking Predicates | Joshua Berne | 2022-11-14 | 2022-12 | SG21 Contracts | |
| P2718R0 | Wording for P2644R1 Fix for Range-based for Loop | Joshua Berne | 2022-11-11 | 2022-12 | CWG Core | |
| P2722R0 | Slides: Beyond operator() (P2511R2 presentation) | Zhihao Yuan | 2022-11-12 | 2022-12 | LEWG Library Evolution | |
| P2723R0 | Zero-initialize objects of automatic storage duration | JF Bastien | 2022-11-15 | 2022-12 | SG12 Undefined and Unspecified Behavior,SG22 Compatability,EWG Evolution | |
| P2725R0 | std::integral_constant Literals | Zach Laine | 2022-11-18 | 2022-12 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2726R0 | Better std::tuple Indexing | Zach Laine | 2022-11-18 | 2022-12 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2727R0 | std::iterator_interface | Zach Laine | 2022-11-20 | 2022-12 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution |
By Administrator | Sep 23, 2022 08:01 AM | Tags: None
The 2022-09 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4917 | Working Draft, Standard for Programming Language C++ | Thomas Köppe | 2022-09-04 | 2022-09 | All of WG21 | |
| N4918 | Editors' Report - Programming Languages - C++ | Thomas Köppe | 2022-09-08 | 2022-09 | All of WG21 | |
| N4920 | Working Draft, C++ Extensions for Library Fundamentals, Version 3 | Thomas Köppe | 2022-08-15 | 2022-09 | All of WG21 | |
| N4921 | Editor's Report: C++ Extensions for Library Fundamentals, Version 3 | Thomas Köppe | 2022-08-15 | 2022-09 | All of WG21 | |
| N4922 | INCITS C++/WG21 agenda: 7-12 November 2022, Kona, HI US | John Spicer | 2022-09-05 | 2022-09 | All of WG21 | |
| P0543R2 | Saturation arithmetic | Jens Maurer | 2022-09-18 | 2022-09 | P0543R1 | LWG Library |
| P0792R11 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2022-09-13 | 2022-09 | P0792R10 | LWG Library |
| P0957R9 | Proxy: A Polymorphic Programming Library | Mingxin Wang | 2022-09-15 | 2022-09 | P0957R8 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution |
| P0987R1 | polymorphic_allocator instead of type-erasure | Pablo Halpern | 2022-09-14 | 2022-09 | P0987R0 | LWG Library |
| P1030R5 | std::filesystem::path_view | Niall Douglas | 2022-09-15 | 2022-09 | P1030R4 | LEWG Library Evolution |
| P1985R3 | Universal template parameters | Gašper Ažman | 2022-09-17 | 2022-09 | P1985R1 | SG7 Reflection,EWG Evolution,LEWG Library Evolution |
| P2348R3 | Whitespaces Wording Revamp | Corentin Jabot | 2022-09-11 | 2022-09 | P2348R2 | EWG Evolution,CWG Core |
| P2495R1 | Interfacing stringstreams with string_view | Michael Hava | 2022-09-14 | 2022-09 | P2495R0 | LEWG Library Evolution |
| P2586R0 | Standard Secure Networking | Niall Douglas | 2022-09-13 | 2022-09 | SG4 Networking,LEWG Library Evolution | |
| P2587R3 | to_string or not to_string | Victor Zverovich | 2022-08-28 | 2022-09 | P2587R2 | LWG Library |
| P2588R1 | Relax std::barrier phase completion step guarantees | Gonzalo Brito | 2022-09-06 | 2022-09 | P2588R0 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2603R1 | member function pointer to function pointer | Jarrad Waterloo | 2022-09-04 | 2022-09 | P2603R0 | EWG Evolution,LEWG Library Evolution |
| P2620R2 | Improve the wording for Universal Character Names in identifiers | Corentin Jabot | 2022-09-13 | 2022-09 | P2620R1 | CWG Core |
| P2623R2 | implicit constant initialization | Jarrad J. Waterloo | 2022-09-12 | 2022-09 | P2623R1 | EWG Evolution |
| P2631R0 | Publish TS Library Fundamentals v3 Now! | Alisdair Meredith | 2022-09-12 | 2022-09 | LEWG Library Evolution,LWG Library | |
| P2636R0 | References to ranges should always be viewable | Hannes Hauswedell | 2022-09-14 | 2022-09 | SG9 Ranges,LEWG Library Evolution | |
| P2637R0 | Member visit and apply | Barry Revzin | 2022-09-17 | 2022-09 | LEWG Library Evolution | |
| P2638R0 | Intel's response to P1915R0 for std::simd parallelism in TS 2 | Daniel Towner | 2022-09-21 | 2022-09 | SG1 Concurrency and Parallelism,LEWG Library Evolution,LWG Library | |
| P2639R0 | Static Allocations | Torben Thaysen | 2022-09-21 | 2022-09 | EWGI SG17: EWG Incubator,LEWGI SG18: LEWG Incubator | |
| P2640R0 | Modules: Inner-scope Namespace Entities: Exported or Not? | Nathan Sidwell | 2022-09-12 | 2022-09 | EWG Evolution | |
| P2641R0 | Checking if a union alternative is active | Barry Revzin | 2022-09-17 | 2022-09 | LEWG Library Evolution | |
| P2642R0 | Padded mdspan layouts | Mark Hoemmen | 2022-09-14 | 2022-09 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2643R0 | Improving C++ concurrency features | Gonzalo Brito Gadeschi | 2022-09-15 | 2022-09 | SG1 Concurrency and Parallelism |
By Administrator | Aug 22, 2022 09:08 AM | Tags: None
The 2022-08 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4914 | WG21 2022-07 Admin telecon minutes | Nina Ranns | 2022-08-21 | 2022-08 | All of WG21 | |
| N4915 | Business Plan and Convener's Report: ISO/IEC JTC1/SC22/WG21 (C++) | Herb Sutter | 2022-07-20 | 2022-08 | All of WG21 | |
| N4916 | WG21 2022-07 Virtual Meeting Minutes of Meeting | Nina Ranns | 2022-08-12 | 2022-08 | All of WG21 | |
| P0843R5 | static_vector | Gonzalo Brito Gadeschi | 2022-08-14 | 2022-08 | P0843R4 | LEWG Library Evolution |
| P1255R9 | A view of 0 or 1 elements: views::maybe | Steve Downey | 2022-08-15 | 2022-08 | P1255R8 | SG9 Ranges,LEWG Library Evolution |
| P2019R1 | Usability improvements for std::thread | Corentin Jabot | 2022-08-09 | 2022-08 | P2019R0 | SG1 Concurrency and Parallelism |
| P2164R6 | views::enumerate | Corentin Jabot | 2022-08-09 | 2022-08 | P2164R5 | SG9 Ranges,LEWG Library Evolution |
| P2264R4 | Make assert() macro user friendly for C and C++ | Peter Sommerlad | 2022-08-08 | 2022-08 | P2264R3 | LEWG Library Evolution |
| P2477R3 | Allow programmers to control coroutine elision | Chuanqi Xu | 2022-07-22 | 2022-08 | P2477R2 | EWG Evolution |
| P2511R2 | Beyond operator(): NTTP callables in type-erased call wrappers | Zhihao Yuan | 2022-08-14 | 2022-08 | P2511R1 | LWG Library |
| P2517R1 | Add a conditional noexcept specification to std::apply | Hewill Kang | 2022-08-21 | 2022-08 | P2517R0 | LEWG Library Evolution |
| P2537R1 | Relax va_start Requirements to Match C | JeanHeyd Meneide | 2022-07-22 | 2022-08 | P2537R0 | LEWG Library Evolution |
| P2581R1 | Specifying the Interoperability of Built Module Interface Files | Daniel Ruoso | 2022-07-28 | 2022-08 | P2581R0 | SG15 Tooling |
| P2587R2 | to_string or not to_string | Victor Zverovich | 2022-08-09 | 2022-08 | P2587R1 | LWG Library |
| P2611R0 | 2022-07 Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2022-07-27 | 2022-08 | LEWG Library Evolution | |
| P2620R1 | Lifting artificial restriction on universal character names | Corentin Jabot | 2022-08-10 | 2022-08 | P2620R0 | SG16 Unicode,SG22 Compatability,EWG Evolution |
| P2621R1 | UB? In my Lexer? | Corentin Jabot | 2022-08-09 | 2022-08 | P2621R0 | SG22 Compatability,EWG Evolution |
| P2623R1 | implicit constant initialization | Jarrad J. Waterloo | 2022-08-14 | 2022-08 | P2623R0 | EWG Evolution |
| P2625R0 | Slides: Life without operator() (P2511R1 presentation) | Zhihao Yuan | 2022-07-19 | 2022-08 | LEWG Library Evolution | |
| P2626R0 | charN_t incremental adoption: Casting pointers of UTF character types | Corentin Jabot | 2022-08-09 | 2022-08 | SG16 Unicode,LEWG Library Evolution | |
| P2627R0 | WG21 2022-07 Virtual Meeting Record of Discussion | Nina Ranns | 2022-08-12 | 2022-08 | All of WG21 | |
| P2628R0 | Extend barrier APIs with memory_order | Gonzalo Brito Gadeschi | 2022-08-11 | 2022-08 | SG1 Concurrency and Parallelism | |
| P2629R0 | barrier token-less split arrive/wait | Gonzalo Brito Gadeschi | 2022-08-11 | 2022-08 | SG1 Concurrency and Parallelism | |
| P2630R0 | Submdspan | Christian Trott | 2022-08-14 | 2022-08 | LEWG Library Evolution | |
| P2633R0 | thread_local_inherit: Enhancing thread-local storage | Justin Cooke | 2022-08-21 | 2022-08 | SG1 Concurrency and Parallelism,EWG Evolution | |
| P2634R0 | Allow qualifiers in constructor declarations | Justin Cooke | 2022-08-21 | 2022-08 | EWG Evolution | |
| P2635R0 | Enhancing the break statement | Justin Cooke | 2022-08-21 | 2022-08 | EWG Evolution |
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.