June 16-21, Sofia, Bulgaria
September 13-19, Aurora, CO, USA
October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 16-21, Kona, HI, USA
By Adrien Hamelin | Jan 5, 2021 12:38 PM | Tags: community c++23 c++20
A summary of the year and the future.
C++ at the end of 2020
by Bartlomiej Filipek
From the article:
While 2020 was a crazy and hard year we were fortunate - C++20 was accepted and published, and the work on new features continues.
As usually every year, here’s my overview of the year: the standardization process, features, implementation, compilers, tools, books and more...
By Adrien Hamelin | Jan 5, 2021 12:29 PM | Tags: community
A year full of accomplishments.
Firsts in 2020 (or, A little dose of good news)
by Herb Sutter
From the article:
2020 has been mostly terrible. That includes for the C++ committee and many of our communities, where just this month we lost Beman Dawes. Beman was one of the most important and influential C++ experts in the world, and made his many contributions mostly behind the scenes. I and everyone else who has ever benefited from any of the standardized STL, Boost, C++Now, std::filesystem, C++98/11/14/17, and more — so, really, most people who have ever used C++ — all owe Beman a debt of gratitude. We miss him greatly.
To end the year with a little dose of good news, I thought I’d mention a just few positive C++ accomplishments that did happen for 2020, and were happier “first-ever” achievements.
First, the big one…
By Adrien Hamelin | Jan 4, 2021 12:12 PM | Tags: advanced
Will you use it?
One Trick with Private Names and Function Templates
by Bartlomiej Filipek
From the article:
Last time in my blog post about How to Share Code with Const and Non-Const Functions in C++ I had a custom type declared and defined in one place (like in a header file). Recently, I tried to separate the declaration from implementation, and I got into a situation where one private function template was left.
In this article, I’d like to show you one trick that allowed me to convert this function template into a non-member function without giving up private details of the class...
By Adrien Hamelin | Jan 4, 2021 12:07 PM | Tags: community advanced
Helping research.
Interactive C++ for Data Science
by Vassil Vassilev, David Lange, Simeon Ehrig, Sylvain Corlay
From the article:
In our previous blog post “Interactive C++ with Cling” we mentioned that exploratory programming is an effective way to reduce the complexity of the problem. This post will discuss some applications of Cling developed to support data science researchers. In particular, interactively probing data and interfaces makes complex libraries and complex data more accessible users. We aim to demonstrate some of Cling’s features at scale; Cling’s eval-style programming support; projects related to Cling; and show interactive C++/CUDA...
By Adrien Hamelin | Jan 4, 2021 12:06 PM | Tags: c++20
Are you familiar with it?
Synchronization with Atomics in C++20
by Rainer Grimm
From the article:
Sender/receiver workflows are quite common for threads. In such a workflow, the receiver is waiting for the sender's notification before it continues to work. There are various ways to implement these workflows. With C++11, you can use condition variables or promise/future pairs; with C++20, you can use atomics...
By Marco Arena | Dec 28, 2020 08:00 AM | Tags: community
Event report with some details on the online organization:
C++ Day 2020
by Marco Arena
By Administrator | Dec 26, 2020 11:22 AM | Tags: None
The 2020-12 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4878 | Working Draft, Standard for Programming Language C++ | Thomas Köppe | 2020-12-15 | 2020-12 | All of WG21 | |
| N4879 | Editors' Report - Programming Languages - C++ | Thomas Köppe | 2020-12-15 | 2020-12 | All of WG21 | |
| P0401R5 | Providing size feedback in the Allocator interface | Chris Kennelly | 2020-12-14 | 2020-12 | P0401R4 | LWG Library |
| P0561R5 | An RAII Interface for Deferred Reclamation | Geoffrey Romer | 2020-12-15 | 2020-12 | P0561R4 | LWG Library |
| P0849R6 | auto(x): decay-copy in the language | Zhihao Yuan | 2020-12-15 | 2020-12 | P0849R5 | LEWG Library Evolution,CWG Core,LWG Library |
| P0901R8 | Size feedback in operator new | Chris Kennelly | 2020-12-14 | 2020-12 | P0901R7 | CWG Core |
| P1030R4 | std::filesystem::path_view | Niall Douglas | 2020-12-15 | 2020-12 | P1030R3 | LEWG Library Evolution |
| P1072R6 | basic_string::resize_and_overwrite | Chris Kennelly | 2020-12-14 | 2020-12 | P1072R5 | LEWG Library Evolution,LWG Library |
| P1102R2 | Down with ()! | Alex Christensen | 2020-12-15 | 2020-12 | P1102R1 | CWG Core |
| P1315R6 | secure_clear (update to N2599) | Miguel Ojeda | 2020-12-18 | 2020-12 | P1315R5 | LEWG Library Evolution,LWG Library |
| P1478R6 | Byte-wise atomic memcpy | Hans Boehm | 2020-12-14 | 2020-12 | P1478R5 | LEWG Library Evolution |
| P1642R5 | Freestanding Library: Easy [utilities], [ranges], and [iterators] | Ben Craig | 2020-12-10 | 2020-12 | P1642R4 | LEWG Library Evolution |
| P1689R3 | Format for describing dependencies of source files | Ben Boeckel | 2020-12-09 | 2020-12 | P1689R2 | SG15 Tooling,SG16 Unicode,EWG Evolution |
| P2077R2 | Heterogeneous erasure overloads for associative containers | Konstantin Boyarinov | 2020-12-15 | 2020-12 | P2077R1 | LEWG Library Evolution |
| P2136R2 | invoke_r | Zhihao Yuan | 2020-12-05 | 2020-12 | P2136R1 | LWG Library |
| P2175R0 | Composable cancellation for sender-based async operations | Lewis Baker | 2020-12-15 | 2020-12 | SG1 Concurrency and Parallelism | |
| P2186R1 | Removing Garbage Collection Support | JF Bastien | 2020-12-14 | 2020-12 | P2186R0 | CWG Core,LWG Library |
| P2195R1 | Electronic Straw Polls | Bryce Adelstein Lelbach | 2020-11-22 | 2020-12 | P2195R0 | All of WG21 |
| P2213R1 | Executors Naming | Amir Kirsh | 2020-12-15 | 2020-12 | P2213R0 | SG1 Concurrency and Parallelism |
| P2216R1 | std::format improvements | Victor Zverovich | 2020-11-25 | 2020-12 | P2216R0 | LEWG Library Evolution |
| P2233R3 | 2020 Fall Library Evolution Polls | Bryce Adelstein Lelbach | 2020-11-22 | 2020-12 | P2233R2 | LEWG Library Evolution |
| P2238R0 | Core Language Working Group "tentatively ready" issues for the November, 2020 meeting | William M. (Mike) Miller | 2020-11-28 | 2020-12 | All of WG21 | |
| P2247R1 | 2020 Library Evolution Report | Bryce Adelstein Lelbach | 2020-12-03 | 2020-12 | P2247R0 | LEWG Library Evolution |
| P2248R1 | Enabling list-initialization for algorithms | Giuseppe D'Angelo | 2020-11-26 | 2020-12 | P2248R0 | LEWGI SG18: LEWG Incubator |
| P2262R0 | 2020 Fall Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2020-12-02 | 2020-12 | LEWG Library Evolution | |
| P2263R0 | A call for a WG21 managed chat service | Tom Honermann | 2020-12-14 | 2020-12 | All of WG21 | |
| P2264R0 | Make assert() macro user friendly for C and C++ | Peter Sommerlad | 2020-12-16 | 2020-12 | LEWGI SG18: LEWG Incubator,SG22 Compatability,LEWG Library Evolution | |
| P2265R0 | Renaming any_invocable | Kevlin Henney | 2020-12-06 | 2020-12 | LEWG Library Evolution | |
| P2268R0 | Freestanding Roadmap | Ben Craig | 2020-12-10 | 2020-12 | SG14 Low Latency | |
| P2272R0 | Safety & Security Review Board | Matthew Butler | 2020-12-15 | 2020-12 | SG12 Undefined and Unspecified Behavior,SG14 Low Latency,EWG Evolution,LEWG Library Evolution,Direction Group | |
| P2273R0 | Making std::unique_ptr constexpr | Andreas Fertig | 2020-12-09 | 2020-12 | LEWG Library Evolution | |
| P2274R0 | C and C++ Compatibility Study Group | Aaron Ballman | 2020-12-13 | 2020-12 | SG22 Compatability |
By triangles | Dec 22, 2020 01:57 AM | Tags: None
An experimental Forward Iterator written from scratch to boost up hand-made containers.
Writing a custom iterator in modern C++
by Internal Pointers
From the article:
Iterators are one of the building blocks of the Standard Library containers, but they are also useful when you want to provide the ability to iterate over elements of a custom container that you wrote yourself. Adding iterators to your containers will make them compatible with the range-based for loops and the C++ Algorithms library: a collection of functions for searching, sorting, counting and manipulating containers, based on iterators.
By Legalize Adulthood | Dec 22, 2020 01:55 AM | Tags: None
Utah C++ Programmers has released a video on vcpkg:
VcPkg: The Open Source Cross-Platform Package Manager from Microsoft
by Richard Thomson
From the video description:
Richard Thomson gives us an informal introduction to vcpkg on both Windows and Linux.
Here's what we want from a package manager:
- works identically across platforms
- integrates with existing builds
- easy to find packages
- easy to consume packages
- can use prebuilt binaries to save build time
- can use local private packages as easily as public packages
- works with continuous integration systems
- doesn't require languages other than C/C++How well does vcpkg fit the bill?
By ganncamp | Dec 22, 2020 01:54 AM | Tags: c++17
SonarSource has been working all year to improve C++ support. Recently we adjusted standard-specific rules to run only on code compiled to that standard. So C++98 rules will no longer raise issues on your C++17 code, and vice versa!
C++ analyzer helps developers to write C++17 compliant code
by Alexandre Gigleux
From the article:
C++17 standard is out for a while now and supported by the C++ analyzer running on SonarCloud. We did an effort in the past years to fix false-positives/false-negatives related to the new constructs/features of C++17. That was great but not enough to help you be more familiar with the standard and take the best out of it.
This is why we are happy to introduce a first set of rules dedicated to C++17. With these rules, we hope you will take advantage of the new features of C++17 and write more reliable and maintainable C++17 code.
C++ analysis is available free for open source projects in SonarCloud, and in commercial editions of SonarQube.