October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Adrien Hamelin | Mar 1, 2021 01:59 PM | Tags: c++20
Another aspect of c++20.
Synchronized Output Streams with C++20
by Rainer Grimm
From the article:
What happens when you write without synchronization to std::cout? You get a mess. With C++20, this should not be anymore...
By Adrien Hamelin | Mar 1, 2021 01:57 PM | Tags: community
Interested?
CLion 2021.1 EAP: Postfix Completion for C and C++
by Anastasia Kazakova
From the article:
A new CLion 2021.1 EAP build (211.6085.16) is now available from our website, via the Toolbox App, or as a snap package (if you are using Ubuntu). Note that if you are on macOS, there is a separate build for Apple Silicon (M1 chip)...
By Administrator | Feb 28, 2021 01:53 PM | Tags: None
The 2021-02 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4880 | PL22.16/WG21 agenda: 22 February 2021, Virtual Meeting | John Spicer | 2021-01-23 | 2021-02 | All of WG21 | |
| N4881 | WG21 virtual meetings: 2021-02, -06, and -10 | Herb Sutter | 2021-02-08 | 2021-02 | All of WG21 | |
| N4882 | WG21 admin telecon meetings: 2021-02, -05, and -09 | Herb Sutter | 2021-02-08 | 2021-02 | All of WG21 | |
| N4883 | WG21 February 2021 admin telecon minutes | Nina Ranns | 2021-02-16 | 2021-02 | All of WG21 | |
| P0401R6 | Providing size feedback in the Allocator interface | Chris Kennelly | 2021-02-15 | 2021-02 | P0401R5 | LWG Library |
| P0448R3 | A strstream replacement using span as buffer | Peter Sommerlad | 2021-02-17 | 2021-02 | P0448R2 | LWG Library |
| P0849R7 | auto(x): decay-copy in the language | Zhihao Yuan | 2021-02-15 | 2021-02 | P0849R6 | EWG Evolution,LWG Library |
| P1018R8 | C++ Language Evolution status pandemic edition 2020/11–2021/01 | JF Bastien | 2021-01-27 | 2021-02 | P1018R7 | EWG Evolution,All of WG21 |
| P1072R7 | basic_string::resize_and_overwrite | Chris Kennelly | 2021-02-15 | 2021-02 | P1072R6 | LWG Library |
| P1322R3 | Networking TS enhancement to enable custom I/O executors | Christopher Kohlhoff | 2021-02-14 | 2021-02 | P1322R2 | SG4 Networking,LEWG Library Evolution |
| P1425R3 | Iterators pair constructors for stack and queue | Corentin Jabot | 2021-02-18 | 2021-02 | P1425R2 | LEWG Library Evolution,LWG Library |
| P1659R2 | starts_with and ends_with | Christopher Di Bella | 2021-02-10 | 2021-02 | P1659R1 | LWG Library |
| P1659R3 | starts_with and ends_with | Christopher Di Bella | 2021-02-19 | 2021-02 | P1659R2 | LWG Library |
| P1682R3 | std::to_underlying | JeanHeyd Meneide | 2021-01-22 | 2021-02 | P1682R2 | LWG Library |
| P1885R5 | Naming Text Encodings to Demystify Them | Corentin Jabot | 2021-02-15 | 2021-02 | P1885R4 | SG16 Unicode,LEWG Library Evolution |
| P1951R1 | Default Arguments for pair's Forwarding Constructor | Logan R. Smith | 2021-02-21 | 2021-02 | P1951R0 | LWG Library |
| P2047R1 | An allocator-aware optional type | Nina Ranns | 2021-02-19 | 2021-02 | P2047R0 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution |
| P2066R5 | Suggested draft TS for C++ Extensions for Minimal Transactional Memory | Jens Maurer | 2021-02-14 | 2021-02 | P2066R4 | SG1 Concurrency and Parallelism,SG5 Transactional Memory,EWG Evolution,LEWG Library Evolution |
| P2093R4 | Formatted output | Victor Zverovich | 2021-02-15 | 2021-02 | P2093R3 | LEWG Library Evolution |
| P2128R3 | Multidimensional subscript operator | Corentin Jabot | 2021-02-15 | 2021-02 | P2128R2 | EWG Evolution |
| P2162R2 | Inheriting from std::variant (resolving LWG3052) | Barry Revzin | 2021-02-17 | 2021-02 | P2162R1 | LEWG Library Evolution |
| P2164R4 | views::enumerate | Corentin Jabot | 2021-02-18 | 2021-02 | P2164R3 | LEWG Library Evolution |
| P2195R2 | Electronic Straw Polls | Bryce Adelstein Lelbach | 2021-01-27 | 2021-02 | P2195R1 | All of WG21 |
| P2216R3 | std::format improvements | Victor Zverovich | 2021-02-15 | 2021-02 | P2216R2 | LWG Library |
| P2231R1 | Add further constexpr support for optional/variant | Barry Revzin | 2021-02-11 | 2021-02 | P2231R0 | LEWG Library Evolution |
| P2234R1 | Consider a UB and IF-NDR Audit | Scott Schurr | 2021-02-13 | 2021-02 | P2234R0 | SG12 Undefined and Unspecified Behavior,EWGI SG17: EWG Incubator |
| P2242R1 | Non-literal variables (and labels and gotos) in constexpr functions | Ville Voutilainen | 2021-02-14 | 2021-02 | P2242R0 | EWG Evolution,CWG Core |
| P2249R0 | Mixed comparisons for smart pointers | Giuseppe D'Angelo | 2021-01-30 | 2021-02 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2280R1 | Using unknown references in constant expressions | Barry Revzin | 2021-02-15 | 2021-02 | P2280R0 | EWG Evolution |
| P2281R1 | Clarifying range adaptor objects | Tim Song | 2021-02-19 | 2021-02 | P2281R0 | LWG Library |
| P2286R1 | Formatting Ranges | Barry Revzin | 2021-02-19 | 2021-02 | P2286R0 | LEWG Library Evolution |
| P2287R1 | Designated-initializers for base classes | Barry Revzin | 2021-02-15 | 2021-02 | P2287R0 | EWG Evolution |
| P2289R0 | 2021 Winter Library Evolution Polls | Bryce Adelstein Lelbach | 2021-01-31 | 2021-02 | LEWG Library Evolution | |
| P2290R0 | Delimited escape sequences | Corentin Jabot | 2021-02-18 | 2021-02 | SG22 Compatability,EWG Evolution | |
| P2291R0 | Add Constexpr Modifiers to Functions to_chars and from_chars for Integral Types in Header | Daniil Goncharov | 2021-01-28 | 2021-02 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution,LWG Library | |
| P2295R0 | Correct UTF-8 handling during phase 1 of translation | Corentin Jabot | 2021-02-15 | 2021-02 | SG16 Unicode,SG22 Compatability,EWG Evolution | |
| P2297R0 | Wording improvements for encodings and character sets | Corentin Jabot | 2021-02-19 | 2021-02 | SG16 Unicode | |
| P2301R0 | Add a pmr alias for std::stacktrace | Steve Downey | 2021-02-15 | 2021-02 | LEWG Library Evolution,LWG Library | |
| P2302R0 | Prefer std::ranges::contains over std::basic_string_view::contains | Christopher Di Bella | 2021-02-10 | 2021-02 | LEWG Library Evolution | |
| P2303R0 | Function literals and value closures | Jens Gustedt | 2021-02-10 | 2021-02 | SG22 Compatability | |
| P2304R0 | Improve type generic programming | Jens Gustedt | 2021-02-10 | 2021-02 | SG22 Compatability | |
| P2305R0 | Type inference for variable definitions and function returns | Jens Gustedt | 2021-02-10 | 2021-02 | SG22 Compatability | |
| P2306R0 | Type-generic lambdas | Jens Gustedt | 2021-02-10 | 2021-02 | SG22 Compatability | |
| P2307R0 | Lvalue closures | Jens Gustedt | 2021-02-10 | 2021-02 | SG22 Compatability | |
| P2309R0 | A common C/C++ core specification | Jens Gustedt | 2021-02-11 | 2021-02 | SG22 Compatability | |
| P2310R0 | Revise spelling of keywords | Jens Gustedt | 2021-02-11 | 2021-02 | SG22 Compatability | |
| P2311R0 | Make false and true first-class language features | Jens Gustedt | 2021-02-11 | 2021-02 | SG22 Compatability | |
| P2312R0 | Introduce the nullptr constant | Jens Gustedt | 2021-02-15 | 2021-02 | SG22 Compatability | |
| P2314R0 | Character sets and encodings | Jens Maurer | 2021-02-12 | 2021-02 | SG16 Unicode,EWG Evolution | |
| P2315R0 | C++ Standard Library Issues to be moved in Virtual Plenary, Feb. 2021 | Jonathan Wakely | 2021-02-12 | 2021-02 | All of WG21 | |
| P2316R0 | Consistent character literal encoding | Corentin Jabot | 2021-02-18 | 2021-02 | SG22 Compatability,EWG Evolution | |
| P2317R0 | C++ - An Invisible foundation of everything | Bjarne Stroustrup | 2021-02-14 | 2021-02 | All of WG21 | |
| P2320R0 | The Syntax of Static Reflection | Andrew Sutton | 2021-02-15 | 2021-02 | SG7 Reflection | |
| P2321R0 | zip | Tim Song | 2021-02-20 | 2021-02 | LEWG Library Evolution | |
| P2322R0 | ranges::fold | Barry Revzin | 2021-02-18 | 2021-02 | LEWG Library Evolution | |
| P2323R0 | maybe_unused attribute for labels | Martin Uecker | 2021-02-16 | 2021-02 | SG22 Compatability | |
| P2324R0 | Labels at the end of compound statements (C compatibility) | Martin Uecker | 2021-02-16 | 2021-02 | SG22 Compatability | |
| P2325R0 | Views should not be required to be default constructible | Barry Revzin | 2021-02-17 | 2021-02 | LEWG Library Evolution |
By Blog Staff | Feb 25, 2021 06:54 PM | Tags: None
Solution just posted:
GotW #100 Solution: Preconditions, Part 1
by Herb Sutter
From the article:
We've seen how postconditions are directly related to assertions (see GotWs #97 and #99). So are preconditions, but that in one important way makes them fundamentally different. What is that? And why would having language support benefit us even more for writing preconditions more than for the other two?
By Meeting C++ | Feb 25, 2021 04:13 PM | Tags: meetingcpp community c++17 c++14 c++11 basics
Taking a look at the results for 2020 from the Meeting C++ Community survey!
The Meeting C++ Community Survey results for 2020
by Jens Weller
From the article:
At the start of 2020 Meeting C++ launched a continuous survey for the C++ community. In this post I will look at some of the results of the first year of running this survey.
By Anastasia Kazakova | Feb 25, 2021 02:33 AM | Tags: community
Every year we run an extensive survey on the IT communities all over the world. And we do share then results and the raw data with the community for free.
Contribute your insights about C++ to the coding community! Take the Developer Ecosystem 2021 survey. You can receive personalized survey results and you’ll have the chance to win an incredible prize.
Help us to gather insights about trends in the C++ community. Participate in the survey run by JetBrains and you’ll have the chance to win a prize! In addition, you can receive personalized survey results to compare yourself with other developers.
By Adrien Hamelin | Feb 19, 2021 12:54 PM | Tags: c++17
Back to the basics.
A Recap on string_view
by Jonathan Boccara
From the article:
The string capabilities of C++ have little evolved since C++98, until C++17 brought a major evolution: std::string_view.
Let’s look at what string_view is about and what it can bring to your code, by making it more expressive and making it run faster...
By Adrien Hamelin | Feb 19, 2021 12:51 PM | Tags: gcc
More of c++20 ready to be used.
Complete C++20 Modules Support with GCC
by Boris Kolpackov
From the article:
build2 now provides conforming and scalable support for all the major C++20 Modules features when used with GCC. This includes named modules, module partitions (both interface and implementation), header unit importation, and include translation. All of these features are also supported in libraries, including consumption of installed libraries with information about modules and importable headers conveyed in pkg-config files. As part of this effort we have also created a collection of examples that demonstrate C++20 Modules features that impact the build process...
By Adrien Hamelin | Feb 19, 2021 12:48 PM | Tags: community
A new feature.
Take control of your vcpkg dependencies with versioning support
by Victor Romero
From the article:
We have an exciting new feature to announce in vcpkg: the long-awaited and highly requested package versioning! This feature makes it possible to install specific versions of dependencies and control installed versions over time. In order to use this feature, a vcpkg.json manifest file must be present in your repo to declare dependencies. Versioning is not currently available for libraries installed via the command line (i.e. vcpkg install library_name commands). The versioning feature is completely optional – you can choose not to specify library versions, and vcpkg will pick the most appropriate set of compatible versions for your dependencies from its baseline catalog. For now, we are considering this feature experimental. Please give us your feedback and let us know how we can improve...
By Legalize Adulthood | Feb 18, 2021 12:44 PM | Tags: None
Utah C++ Programmers has released a new video from their February meeting.
Introduction to GPU Programming with CUDA and Thrust
by Richard Thomson
From the video description:
High-performance computing is now dominated by general-purpose graphics processing unit (GPGPU) oriented computations. How can we leverage our knowledge of C++ to program the GPU?
NVIDIA's answer to general-purpose computing on the GPU is CUDA. CUDA programs are essentially C++ programs, but have some differences. CUDA comes as a Toolkit SDK containing a number of libraries that exploit the resources of the GPU: fast Fourier transforms, machine learning training and inference, etc. Thrust is a C++ template library for CUDA.
In this month's meeting, Richard Thomson will present a brief introduction to CUDA with the Thrust library to program the GPU.
Programming the GPU with CUDA is a huge topic covered by lots of libraries, tutorials, videos, and so-on, so we will only be able to present an introduction to the topic. You are encouraged to explore more on your own!