November 14-16, Berlin, Germany
November 18-23, Wrocław, Poland
November 25, Wrocław, Poland
February 10-15, Hagenberg, Austria
March 19-21, Madrid, Spain
April 1-4, Bristol, UK
June 16-21, Sofia, Bulgaria
By Adrien Hamelin | Jan 20, 2020 11:25 AM | Tags: experimental
Do you know about them?
C++20: Concepts - Predefined Concepts
by Rainer Grimm
From the article:
C++20 has many predefined concepts. Consequentially, before you define your concept, you should know the existing ones. This post gives you an overview of the predefined concepts. To get the general idea of concepts, read my previous posts...
By Blog Staff | Jan 18, 2020 03:51 PM | Tags: None
The 2020-01 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup | Disposition |
|---|---|---|---|---|---|---|---|
| P1970R1 | Consistency for size() functions | Hannes Hauswedell | 2020-01-13 | 2020-01 | P1970R0 | Library | |
| P1976R1 | Fixed-size 'span' construction from dynamic-size range | Tomasz Kamiński | 2020-01-03 | 2020-01 | P1976R0 | Library | |
| P1985R0 | Universal template parameters | Gašper Ažman, Mateusz Pusz | 2020-01-13 | 2020-01 | EWGI | ||
| P1988R0 | Allow Templates in Local Classes | Steve Downey | 2020-01-13 | 2020-01 | EWGI, Evolution | ||
| P1990R0 | Add operator[] to std::initializer_list | Daniil Goncharov, Antony Polukhin | 2019-12-16 | 2020-01 | LEWGI, Library Evolution, Library | ||
| P1993R1 | Restore shared state to bulk_execute | Jared Hoberock | 2020-01-12 | 2020-01 | P1993R0 | SG1, Library Evolution | |
| P1997R1 | Relaxing Restrictions on Arrays | Krystian Stasiowski, Theodoric Stier | 2020-01-13 | 2020-01 | P1997R0 | Evolution | |
| P1998R1 | Simple Facility for Lossless Integer Conversion | Ryan McDougall | 2020-01-08 | 2020-01 | P1998R0 | SG6, LEWGI | |
| P2000R0 | Direction for ISO C++ | Michael Wong | 2020-01-13 | 2020-01 | WG21 | ||
| P2002R0 | Defaulted comparison specification cleanups | Richard Smith | 2019-12-17 | 2020-01 | Core | ||
| P2003R0 | Fixing Internal and External Linkage Entities in Header Units | Michael Spencer | 2020-01-13 | 2020-01 | SG2, Evolution | ||
| P2004R0 | Numbers and their Scopes | Antony Polukhin | 2019-12-17 | 2020-01 | SG6, LEWGI | ||
| P2005R0 | A Brief 2D Graphics Review | James Berrow | 2019-12-21 | 2020-01 | SG13 | ||
| P2006R0 | Eliminating heap-allocations in sender/receiver with connect()/start() as basis operations | Lewis Baker, Eric Niebler, Kirk Shoop, Lee Howes | 2020-01-13 | 2020-01 | SG1, Library Evolution | ||
| P2007R0 | `std::from_chars` should work with `std::string_view` | Mateusz Pusz | 2020-01-10 | 2020-01 | LEWGI, Library Evolution | ||
| P2008R0 | Enable variable template template parameters | Mateusz Pusz | 2020-01-10 | 2020-01 | EWGI | ||
| P2009R0 | SG16: Unicode meeting summaries 2019-10-09 through 2019-12-11 | Tom Honermann | 2019-12-28 | 2020-01 | SG16 | ||
| P2010R0 | Remove iostream operators from P1889 | Daniil Goncharov | 2019-12-27 | 2020-01 | SG6, LEWGI | ||
| P2011R0 | A pipeline-rewrite operator | Barry Revzin, Colby Pike | 2020-01-07 | 2020-01 | Evolution | ||
| P2013R0 | Freestanding Language: Optional ::operator new | Ben Craig | 2020-01-10 | 2020-01 | SG14, Evolution | ||
| P2014R0 | Proposed resolution for US061/US062 - aligned allocation of coroutine frames | Lewis Baker, Gor Nishanov | 2020-01-13 | 2020-01 | Evolution | ||
| P2016R0 | A step parameter for iota | Corentin Jabot | 2020-01-14 | 2020-01 | Library Evolution | ||
| P2017R0 | Conditionally safe ranges | Barry Revzin | 2020-01-07 | 2020-01 | Library | ||
| P2020R0 | Locales, Encodings and Unicode | Corentin Jabot | 2020-01-13 | 2020-01 | SG16 | ||
| P2021R0 | Negative zero strikes again | Victor Zverovich | 2020-01-09 | 2020-01 | Library Evolution | ||
| P2024R0 | Bloomberg Analysis of Unified Executors | David Sankel, Frank Birbacher, Marina Efimova, Dietmar Kuhl, Vern Riedlin | 2020-01-13 | 2020-01 | Library Evolution | ||
| P2025R0 | Guaranteed copy elision for named return objects | Anton Zhilin | 2020-01-08 | 2020-01 | EWGI | ||
| P2026R0 | A Constituent Study Group for Safety-Critical Applications | Ryan McDougall, Bryce Adelstein Lelbach, JF Bastien, Andreas Weis, Ruslan Arutyunyan, Ilya Burylov | 2020-01-14 | 2020-01 | WG21, Evolution, Library Evolution | ||
| P2027R0 | Moved-from objects need not be valid | Geoff Romer | 2020-01-10 | 2020-01 | Library Evolution, Library | ||
| P2028R0 | What is ABI, and What Should WG21 Do About It? | Titus Winters | 2020-01-10 | 2020-01 | Evolution, Library Evolution | ||
| P2029R0 | Proposed resolution for core issues 411, 1656, and 2333; escapes in character and string literals | Tom Honermann | 2020-01-12 | 2020-01 | Core | ||
| P2030R0 | SG19: Machine Learning 2019/10/10-2020/01/09 | Michael Wong | 2020-01-10 | 2020-01 | SG19 | ||
| P2031R0 | SG14: Meeting Minutes 2019/10/08-2020/01/07 | Michael Wong | 2020-01-10 | 2020-01 | SG14 | ||
| P2033R0 | History of Executor Properties | Jared Hoberock | 2020-01-10 | 2020-01 | SG1 | ||
| P2034R0 | Partially Mutable Lambda Captures | Ryan McDougall | 2020-01-11 | 2020-01 | EWGI | ||
| P2035R0 | Value Proposition: Allocator-Aware (AA) Software | Pablo Halpern, John Lakos | 2020-01-13 | 2020-01 | LEWGI, Library Evolution | ||
| P2036R0 | Changing scope for lambda trailing-return-type | Barry Revzin | 2020-01-12 | 2020-01 | Evolution | ||
| P2037R0 | String's gratuitous assignment | Andrzej Krzemieński | 2020-01-11 | 2020-01 | Library Evolution | ||
| P2038R0 | Proposed nomenclature for contract-related proposals | Andrzej Krzemieński, Ryan McDougall | 2020-01-11 | 2020-01 | SG21 | ||
| P2039R0 | do_until Loop | Menashe Rosemberg | 2020-01-01 | 2020-01 | LEWGI | ||
| P2040R0 | Reflection-based lazy-evaluation | Corentin Jabot | 2020-01-13 | 2020-01 | SG7 | ||
| P2041R0 | Deleting variable templates | David Stone | 2020-01-11 | 2020-01 | Evolution | ||
| P2042R0 | Alternate names for make_shared_default_init | Andrzej Krzemieński | 2020-01-11 | 2020-01 | Library Evolution | ||
| P2043R0 | Don't constexpr All The Things | David Sankel | 2020-01-13 | 2020-01 | SG7 | ||
| P2044R0 | Member Templates for Local Classes | Robert Leahy | 2020-01-12 | 2020-01 | EWGI, Evolution | ||
| P2045R0 | Missing Mandates for the standard library | Marshall Clow | 2020-01-13 | 2020-01 | Library | ||
| P2046R0 | Rangify New Algorithms | Dan Raviv | 2020-01-12 | 2020-01 | Library | ||
| P2047R0 | An allocator-aware optional type | Nina Ranns, Pablo Halpern Ville Voutilainen | 2020-01-13 | 2020-01 | LEWGI, Library Evolution | ||
| P2048R0 | Prohibit zero and NULL from being used as null pointer literals | Vittorio Romeo | 2020-01-12 | 2020-01 | EWGI | ||
| P2049R0 | Constraint refinement for special-cased functions | Andrew Sutton, Wyatt Childers | 2020-01-13 | 2020-01 | SG7 | ||
| P2050R0 | Tweaks to the design of source code fragments | Andrew Sutton, Wyatt Childers | 2020-01-13 | 2020-01 | SG7 | ||
| P2051R0 | C++ Library Issues to be moved in Prague | Marshall Clow | 2020-01-13 | 2020-01 | WG21 | ||
| P2052R0 | Making modern C++ i/o a consistent API experience from bottom to top | Niall Douglas | 2020-01-12 | 2020-01 | SG1, LEWGI, Library Evolution | ||
| P2054R0 | Audio I/O Software Use Cases | Sophia Poirier, Frank Birbacher, Timur Doumler | 2020-01-13 | 2020-01 | SG13 | ||
| P2055R0 | A Relaxed Guide to memory_order_relaxed | Paul E. McKenney, Hans Boehm | 2020-01-12 | 2020-01 | SG1 | ||
| P2057R0 | SG14 SG19 Past, Present and Future status | Michael Wong, Ben Craig, Paul Bendixen, Matthew Bentley, Inbal Levi, Rene Riviera, Steffan Tjernstrom, Mark Hoemmen, Ronen Friedman | 2020-01-13 | 2020-01 | SG14, SG19 | ||
| P2058R0 | Make std::random_device Less Inscrutable | Martin Hořeňovský | 2020-01-13 | 2020-01 | Library Evolution | ||
| P2059R0 | Make Pseudo-random Numbers Portable | Martin Hořeňovský | 2020-01-13 | 2020-01 | Library Evolution | ||
| P2060R0 | Make Random Number Engines Seedable | Martin Hořeňovský | 2020-01-13 | 2020-01 | Library Evolution | ||
| P2061R0 | Sequential consistency for atomic memcpy | David Goldblatt | 2020-01-13 | 2020-01 | SG1 | ||
| P2062R0 | The Circle Meta-model | Daveed Vandevoorde, Wyatt Childers, Andrew Sutton, Faisal Vali | 2020-01-13 | 2020-01 | SG7 | ||
| P2064R0 | Assumptions | Herb Sutter | 2020-01-13 | 2020-01 | SG21, Evolution | ||
| P2065R0 | naming and aliases | Kirk Shoop | 2020-01-13 | 2020-01 | Library Evolution | ||
| P2066R0 | Suggested draft TS for C++ Extensions for Transaction Memory Light | Jens Maurer, Michael L. Scott | 2020-01-13 | 2020-01 | SG1, Evolution | ||
| P2067R0 | Allowing trailing commas in ctor-initializer | Marc Mutz | 2020-01-13 | 2020-01 | EWGI | ||
| P2068R0 | Using ?: to reduce the scope of constexpr-if | Marc Mutz | 2020-01-13 | 2020-01 | EWGI | ||
| P2069R0 | Stackable, thread local, signal guards | Niall Douglas | 2020-01-13 | 2020-01 | SG1, SG12, EWGI, LEWGI | ||
| P2070R0 | A case for optional and object_ptr | Peter Sommerlad, Anthony Williams, Michael Wong, Jan Babst | 2020-01-13 | 2020-01 | SG12, LEWGI, Library Evolution, Library | ||
| P2071R0 | Named universal character escapes | Tom Honermann, Peter Bindels | 2020-01-13 | 2020-01 | SG16, Evolution | ||
| P2072R0 | Differentiable programming for C++ | Marco Foco, Vassil Vassilev, Max Rietmann, Michael Wong | 2020-01-13 | 2020-01 | SG19 | ||
| P2073R0 | Debugging C++ coroutines | Dmitry Duka, Ivan Shutov, Konstantin Sadov | 2020-01-13 | 2020-01 | SG15 | ||
| P2074R0 | Asynchronous callstacks & coroutines | Dmitry Duka | 2020-01-13 | 2020-01 | SG15 | ||
| P2075R0 | Philox as an extension of the C++ RNG engines | Pavel Dyakov, Ilya Burylov; Ruslan Arutyunyan; Andrey Nikolaev | 2020-01-13 | 2020-01 | SG6 | ||
| P2076R0 | Previous disagreements on Contracts | Ville Voutilainen | 2020-01-13 | 2020-01 | SG21 | ||
| P2077R0 | Heterogeneous erasure overloads for associative containers | Konstantin Boyarinov, Sergey Vinogradov; Ruslan Arutyunyan | 2020-01-13 | 2020-01 | LEWGI | ||
| P2078R0 | Add new traits type std::is_complex | Bob Steagall | 2020-01-13 | 2020-01 | SG6, Library Evolution | ||
| P2079R0 | Shared execution engine for executors | Ruslan Arutyunyan, Michael Voss | 2020-01-13 | 2020-01 | SG1 | ||
| P2080R0 | Polymorphic allocators: There is no such thing as One True Vocabulary Type | Ville Voutilainen | 2020-01-13 | 2020-01 | Library Evolution | ||
| P2081R0 | Rebase the Library Fundamentals v3 TS on C++20 | Thomas Köppe | 2020-01-13 | 2020-01 | Library Evolution, Library | ||
| P2082R0 | Fixing CTAD for aggregates | Timur Doumler | 2020-01-13 | 2020-01 | Core | ||
| P2087R0 | Reflection Naming: fix reflexpr | Mihail Naydenov | 2020-01-12 | 2020-01 | SG7 | ||
| P2088R0 | Reflection Naming: Reification | Mihail Naydenov | 2020-01-12 | 2020-01 | SG7 |
By Blog Staff | Jan 18, 2020 03:48 PM | Tags: None
The 2020-01 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup | Disposition |
|---|---|---|---|---|---|---|---|
| N4845 | Belfast 2019 LEWG Summary | Titus Winters | 2019-12-18 | 2020-01 | WG21 | ||
| N4846 | Agenda - Prague, February 2020 | John Spicer | 2019-12-31 | 2020-01 | WG21 | ||
| N4847 | WG21 telecon meeting: Pre-Prague | Herb Sutter | 2020-01-13 | 2020-01 | WG21 | ||
| N4848 | WG21 Autumn Meeting 2020 - New York, New York, USA | Kevin Fleming | 2020-01-14 | 2020-01 | WG21 | ||
| N4849 | Working Draft, Standard for Programming Language C++ | Richard Smith | 2020-01-14 | 2020-01 | N4842 | WG21 | |
| N4850 | Editors' Report - Programming Languages - C++ | Richard Smith, Thomas Koeppe, Jens Maurer, Dawn Perchik | 2020-01-14 | 2020-01 | WG21 | ||
| P0211R3 | Allocator-aware library wrappers for dynamic allocation | Thomas Köppe | 2020-01-14 | 2020-01 | P0211R2 | Library Evolution | |
| P0260R4 | C++ Concurrent Queues | Lawrence Crowl, Chris Mysen | 2020-01-13 | 2020-01 | P0260R3 | Library Evolution | |
| P0261R4 | C++ Distributed Counters | Lawrence Crowl | 2020-01-13 | 2020-01 | P0261R3 | Library Evolution | |
| P0330R8 | Literal Suffixes for (signed) size_t | JeanHeyd Meneide, Rein Halbersma | 2020-01-11 | 2020-01 | P0330R7 | Core | |
| P0350R4 | Integrating simd with parallel algorithms | Matthias Kretz | 2020-01-13 | 2020-01 | P0350R3 | Library Evolution | |
| P0401R2 | Providing size feedback in the Allocator interface | Chris Kennelly, Jonathan Wakely | 2020-01-12 | 2020-01 | P0401R1 | Library Evolution, Library | |
| P0443R12 | A Unified Executors Proposal for C++ | Jared Hoberock, Michael Garland, Chris Kohlhoff, Chris Mysen, Carter Edwards, Gordon Brown, David Hollman, Lee Howes, Kirk Shoop, Lewis Baker, Eric Niebler | 2020-01-10 | 2020-01 | P0443R11 | SG1, Library Evolution | |
| P0447R10 | Introduction of std::colony to the standard library | Matt Bentley | 2019-12-10 | 2020-01 | P0447R9 | WG21, SG14, LEWGI, Library Evolution | |
| P0539R5 | A Proposal to add wide_int Template Class | Antony Polukhin | 2019-12-18 | 2020-01 | P0539R4 | SG6, LEWGI, Library Evolution | |
| P0843R4 | static_vector | Gonzalo Brito Gadeschi | 2020-01-13 | 2020-01 | P0843R3 | Library | |
| P0847R4 | Deducing this | Gašper Ažman, Simon Brand, Ben Deane, Barry Revzin | 2020-01-13 | 2020-01 | P0847R2 | Evolution | |
| P0870R1 | A proposal for a type trait to detect narrowing conversions | Giuseppe D'Angelo | 2020-01-13 | 2020-01 | P0870R0 | LEWGI | |
| P0876R10 | fiber_context - fibers without scheduler | Oliver Kowalke, Nat Goodspeed | 2020-01-10 | 2020-01 | P0876R9 | SG1, Evolution, Library Evolution | |
| P0928R1 | Mitigating Spectre v1 Attacks in C++ | Devin Jeanpierre, Geoffrey Romer, Chandler Carruth | 2020-01-13 | 2020-01 | P0928R0 | SG12, Evolution | |
| P1018R5 | Language Evolution status after Belfast 2019 | JF Bastien | 2020-01-05 | 2020-01 | P1018R4 | WG21, Evolution | |
| P1028R3 | SG14 status_code and standard error object | Niall Douglas | 2020-01-12 | 2020-01 | P1028R2 | LEWGI, Library Evolution | |
| P1029R3 | move = bitcopies | Niall Douglas | 2020-01-12 | 2020-01 | P1029R2 | Evolution | |
| P1040R5 | std::embed and #depend | JeanHeyd Meneide | 2020-01-07 | 2020-01 | P1040R4 | SG7, Evolution | |
| P1046R2 | Automatically Generate More Operators | David Stone | 2020-01-11 | 2020-01 | P1046R1 | Evolution, Library Evolution | |
| P1068R3 | Vector API for random number generation | Ilya Burylov, Pavel Dyakov, Ruslan Arutyunyan, Andrey Nikolaev | 2020-01-13 | 2020-01 | P1068R2 | Library Evolution | |
| P1112R3 | Language support for class layout control | Pal Balog | 2020-01-13 | 2020-01 | P1112R2 | EWGI | |
| P1243R3 | Rangify New Algorithms | Dan Raviv | 2020-01-09 | 2020-01 | P1243R2 | Library | |
| P1322R1 | Networking TS enhancement to enable custom I/O executors | Christopher Kohlhoff | 2020-01-13 | 2020-01 | P1322R0 | SG1, SG4, Library Evolution | |
| P1371R2 | Pattern Matching | Sergei Murzin, Michael Park, David Sankel, Dan Sarginson | 2020-01-13 | 2020-01 | P1371R1 | Evolution | |
| P1385R5 | A proposal to add linear algebra support to the C++ standard library | Guy Davidson, Bob Steagall | 2020-01-13 | 2020-01 | P1385R4 | Library Evolution | |
| P1436R3 | Executor properties for affinity-based execution | Gordon Brown, Ruyman Reyes, Michael Wong, H. Carter Edwards, Thomas Rodgers, Mark Hoemmen, Tom Scogland | 2020-01-14 | 2020-01 | P1436R2 | SG1, SG14 | |
| P1460R0 | Mandating the Standard Library: Clause 20 - Utilities library | Marshall Clow, Alberto Barbati | 2020-01-13 | 2020-01 | Library | ||
| P1467R3 | Extended floating-point types | David Olsen, Michał Dominiak | 2020-01-12 | 2020-01 | P1467R2 | Evolution, Library Evolution | |
| P1468R3 | Fixed-layout floating-point type aliases | Michał Dominiak, David Olsen, Boris Fomitchev, Sergei Nikolaev | 2020-01-12 | 2020-01 | P1468R2 | Evolution, Library Evolution | |
| P1496R2 | Formatting of Negative Zero | Alan Talbot | 2020-01-12 | 2020-01 | P1496R1 | Library Evolution, Library | |
| P1609R3 | C++ Should Support Just-in-Time Compilation | Hal Finkel | 2020-01-13 | 2020-01 | P1609R2 | SG7, EWGI | |
| P1641R2 | Freestanding Library: Rewording the Status Quo | Ben Craig | 2020-01-10 | 2020-01 | P1641R1 | SG14, Library Evolution | |
| P1642R2 | Freestanding Library: Easy [utilities], [ranges], and [iterators] | Ben Craig | 2020-01-10 | 2020-01 | P1642R1 | SG14, Library Evolution | |
| P1664R2 | reconstructible_range - a concept for putting ranges back together | JeanHeyd Meneide | 2020-01-06 | 2020-01 | P1664R1 | Library Evolution | |
| P1673R2 | A free function linear algebra interface based on the BLAS | Mark Hoemmen, David Hollman, Christian Trott, Daniel Sunderland, Nevin Liber, Siva Rajamanickam, Li-Ta Lo, Damien Lebrun-Grandie, Graham Lopez, Peter Caday, Sarah Knepper, Piotr Luszczek, Timothy Costa | 2020-01-13 | 2020-01 | P1673R1 | SG1, SG6, SG14, SG19, Library Evolution | |
| P1689R2 | Format for describing dependencies of source files | Ben Boeckel, Brad King | 2020-01-13 | 2020-01 | P1689R1 | SG15, SG16, Evolution | |
| P1706R2 | Programming Language Vulnerabilities for Safety Critical C++ | Michael Wong, Stephen Michel, Peter Sommerlad, Lisa Lippincott, Aaron Ballman, Richard Corden, Clive Pygott, Erhard Ploedereder, John McFarlane, Paul Preney, Andreas Weis, Federico Kircheis, Tullio Vardanega, Jorg Brown, Chris Tapp | 2020-01-13 | 2020-01 | P1706R1 | SG12 | |
| P1708R2 | Simple Statistical Functions | Michael Wong, Micheal Chiu, Richard Dosselmann, Eric Niebler, Phillip Ratzlof, Vincent Reverdy | 2020-01-10 | 2020-01 | P1708R1 | SG19 | |
| P1709R2 | Graph Library | Michael Wong, Phillip Ratzloff, Richard Dosselmann, Michael Wong, Matthew Galati, Andrew Lumsdaine, Jens Maurer, Domagoj Saric, Jesun Firoz, Kevin Deweese | 2020-01-13 | 2020-01 | P1709R1 | SG19 | |
| P1726R2 | Pointer lifetime-end zap | Maged Michael, Jens Mauer, Peter Sewell, Martin Uecker, Hans Boehm, Hubert Tong, Niall Douglas, Will Deacon, Michael Wong, and David Goldblatt | 2020-01-13 | 2020-01 | P1726R1 | SG1, SG12, Evolution | |
| P1732R2 | Do not promise support for function syntax of operators | CJ Johnson | 2019-12-10 | 2020-01 | P1732R1 | Library Evolution, Library | |
| P1759R2 | Native handle from file streams | Elias Kosunen | 2019-12-13 | 2020-01 | P1759R1 | Library Evolution | |
| P1774R3 | Portable assumptions | Timur Doumler | 2020-01-13 | 2020-01 | P1774R2 | Evolution | |
| P1779R3 | ABI isolation for member functions | S. Davis Herring | 2020-01-14 | 2020-01 | P1779R2 | Core | |
| P1790R1 | Networking TS changes to enable better DynamicBuffer composition | Christopher Kohlhoff | 2020-01-13 | 2020-01 | P1790R0 | SG4, Library Evolution | |
| P1795R2 | System topology discovery for heterogeneous & distributed computing | Gordon Brown, Ruyman Reyes, Michael Wong, Mark Hoemmen, Jeff Hammond, Tom Scogland, Domagoj Šarić | 2020-01-13 | 2020-01 | P1795R1 | SG1, SG14 | |
| P1818R1 | Narrowing and Widening Conversions | Lawrence Crowl | 2020-01-13 | 2020-01 | P1818R0 | EWGI | |
| P1838R0 | Modules User-Facing Lexicon and File Extensions | Bryce Adelstein Lelbach, Boris Kolpackov | 2020-01-13 | 2020-01 | SG15 | ||
| P1847R2 | Make declaration order layout mandated | Pal Balog | 2020-01-13 | 2020-01 | P1847R1 | Evolution | |
| P1848R0 | Improve rules of standard layout | Pal Balog | 2020-01-13 | 2020-01 | Evolution | ||
| P1857R2 | Modules Dependency Discovery | Michael Spencer | 2020-01-13 | 2020-01 | P1857R1 | Core | |
| P1858R1 | Generalized pack declaration and usage | Barry Revzin | 2020-01-08 | 2020-01 | P1858R0 | Evolution | |
| P1863R1 | ABI - Now or Never | Titus Winters | 2020-01-12 | 2020-01 | P1863R0 | WG21, Direction Group | |
| P1881R1 | Epochs: a backward-compatible language evolution mechanism | Vittorio Romeo | 2020-01-12 | 2020-01 | P1881R0 | EWGI | |
| P1883R1 | file_handle and mapped_file_handle | Niall Douglas | 2020-01-12 | 2020-01 | P1883R0 | SG1, LEWGI | |
| P1884R0 | Private Module Partition: An Inconsistent Boundary | Nathan Sidwell | 2020-01-13 | 2020-01 | SG2, Evolution | ||
| P1885R1 | Naming Text Encodings to Demystify Them | Corentin Jabot | 2020-01-10 | 2020-01 | P1885R0 | SG16, Library Evolution | |
| P1887R1 | Reflection on attributes | Corentin Jabot | 2020-01-13 | 2020-01 | P1887R0 | SG7 | |
| P1889R1 | C++ Numerics Work In Progress | Alexander Zaitsev, Antony Polukhin | 2019-12-27 | 2020-01 | P1889R0 | SG6 | |
| P1897R2 | Towards C++23 executors: A proposal for an initial set of algorithms | Lee Howes | 2020-01-13 | 2020-01 | P1897R1 | SG1 | |
| P1912R1 | Types with array-like object representations | Timur Doumler | 2020-01-13 | 2020-01 | P1912R0 | Evolution | |
| P1919R2 | Expanding the Rights in SD-8 | Nevin Liber | 2020-01-08 | 2020-01 | P1919R1 | Library Evolution | |
| P1935R2 | A C++ Approach to Physical Units | Mateusz Pusz | 2020-01-13 | 2020-01 | P1935R1 | SG6, LEWGI, Library Evolution | |
| P1937R1 | Fixing inconsistencies between `constexpr` and `consteval` functions | David Stone | 2020-01-13 | 2020-01 | P1937R0 | Core | |
| P1944R0 | Add Constexpr Modifiers to Functions in cstring and cwchar Headers | Daniil Goncharov, Antony Polukhin | 2019-12-16 | 2020-01 | LEWGI, Library Evolution, Library | ||
| P1945R0 | Making More Objects Contiguous | Krystian Stasiowski | 2019-10-28 | 2020-01 | Evolution | ||
| P1949R1 | C++ Identifier Syntax using Unicode Standard Annex 31 | Steve Downey, Zach Laine, Tom Honermann, Peter Bindels | 2020-01-13 | 2020-01 | P1949R0 | SG7, SG16, Evolution | |
| P1950R0 | An indirect value-type for C++ | Jonathan Coe, Antony Peacock | 2020-01-13 | 2020-01 | Library Evolution | ||
| P1956R0 | On the naming of low-level bit manipulation functions | Vincent Reverdy | 2020-01-13 | 2020-01 | Library | ||
| P1957R1 | Converting from T* to bool should be considered narrowing (re: US 212) | Zhihao Yuan | 2020-01-13 | 2020-01 | P1957R0 | Core, Library | |
| P1958R0 | C++ Concurrent Buffer Queue | Lawrence Crowl | 2020-01-13 | 2020-01 | Library Evolution | ||
| P1964R1 | Wording for boolean-testable | Tim Song | 2020-01-11 | 2020-01 | P1964R0 | Library | |
| P1967R1 | #embed - a simple, scannable preprocessor-based resource acquisition method | JeanHeyd Meneide | 2020-01-04 | 2020-01 | P1967R0 | Evolution |
By Ansel Sermersheim | Jan 18, 2020 01:48 PM | Tags: None
New video on the CopperSpice YouTube Channel:
std::visit
by Barbara Geller and Ansel Sermersheim
About the video:
In this video, we look at the std::visit function and how it relates to std::variant. We also talk about the idea of callbacks and algorithms, and how std::visit is actually very different. We then point out some surprising features of std::visit which are rarely discussed.
Please take a look and remember to subscribe!
By DaPi | Jan 18, 2020 01:48 PM | Tags: basics
Understanding the basics of the language in every detail.
Objects, their lifetimes and pointers
by Dawid Pilarski
From the article:
A detailed tour on C++ objects, what they are and how to avoid common undefined behaviors.
By Hartmut Kaiser | Jan 15, 2020 06:12 PM | Tags: performance parallelism heterogeneous computing distributed computing c++17 c++14 c++11
The STE||AR Group has released V1.4 of HPX -- A C++ Standard library for parallelism and concurrency.
HPX V1.4 Released
The newest version of HPX (V1.4) is now available for download! This release focuses on performance and stability improvements. Please see here for the full release notes.
HPX is a general purpose parallel C++ runtime system for applications of any scale. It implements all of the related facilities as defined by the C++ Standard. As of this writing, HPX provides the only widely available open-source implementation of the new C++17 parallel algorithms. Additionally, HPX implements functionalities proposed as part of the ongoing C++ standardization process, such as large parts of the C++ Concurrency TS, Parallelism TS V2, data-parallel algorithms, executors, and many more. It also extends the existing C++ Standard APIs to the distributed case (e.g. compute clusters) and for heterogeneous systems (e.g. GPUs).
HPX seamlessly enables a new Asynchronous C++ Standard Programming Model that tends to improve the parallel efficiency of our applications and helps reducing complexities usually associated with parellism and concurrency.
By ganncamp | Jan 13, 2020 01:45 AM | Tags: None
The code analysis platform SonarQube announces the next step for C++.
SonarQube C++ analysis offers more efficient analysis and deeper Code Guildelines coverage
By Alex Gigleux
From the article:
We’re proud to announce the following improvements to the C++ analyzer:
- faster analysis thanks to incremental mode
- broader coverage of the C++ Core Guidelines
- improved diagnostic reproduction for failed scans thanks to its automatic reproducer creation
By Adrien Hamelin | Jan 9, 2020 01:09 PM | Tags: community c++17
Making the code more expressive!
Dry-comparisons: A C++ Library to Shorten Redundant If Statements
by Jonathan Boccara
From the article:
Have you ever felt that the code you write in if statements doesn’t look as natural as the specification expresses them?
By Adrien Hamelin | Jan 9, 2020 01:07 PM | Tags: experimental
The series continue.
C++ coroutines: The problem of the DispatcherQueue task that runs too soon, part 4
by Raymond Chen
From the article:
Last time, we made another attempt to fix a race condition in C++/WinRT’s resume_foreground(DispatcherQueue) function when it tries to resume execution on a dispatcher queue. We did this by having the queued task wait until await_suspend was finished before allowing the coroutine to resume, and we found a nice place to put the synchronization object, namely in the awaiter, but even with that fix, we introduced additional memory barriers into the hot code path.
But it turns out all this work was unnecessary. We just had to look at the problem a different way.
The purpose of storing the result of TryEnqueue into m_queued is so that await_resume can report whether the lambda was queued or not. But we can infer that information another way: The fact that our lambda is running means that got got queued. Because if the lambda were not queued, then it would never have run in the first place...
By Adrien Hamelin | Jan 9, 2020 01:04 PM | Tags: experimental
The series contine.
C++ coroutines: The problem of the DispatcherQueue task that runs too soon, part 3
by Raymond Chen
From the article:
Last time, we fixed a race condition in C++/WinRT’s resume_foreground(DispatcherQueue) function when it tries to resume execution on a dispatcher queue. We did this by having the queued task wait until await_suspend was finished before allowing the coroutine to resume. The hard part was finding a place to put the synchronization object, and we ended up putting it in the queued task’s lambda...