C++ Day 2020--Marco Arena
Event report with some details on the online organization:
C++ Day 2020
by Marco Arena
News
2020-12 mailing available
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 |
Writing a custom iterator in modern C++ -- Internal Pointers
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.
VcPkg: The Open Source Cross-Platform Package Manager from Microsoft -- Richard Thomson
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?
SonarQube / SoanrCloud add C++17 rules -- Alexandre Gigleux
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.
On Design Patterns in C++--Jonathan Boccara'
Yo go iin more details.
On Design Patterns in C++
by Jonathan Boccara'
From the article:
Design patterns are a must-know in programming today...
I'm Proud to Present my New Book: C++20--Rainer Grimm
Interested?
I'm Proud to Present my New Book: C++20
by Rainer Grimm
From the article:
I'm proud to present the early release of my book to C++20 on LeanPub. The book is 50 % done and has more than 300 pages and 150 code examples of content. I will update the book at least two times in 2021. Of course, you will get each update of the book
std::any - comparison with void* and motivating examples -- Hitesh Kumar
An introduction to std::any and comparison with void*.
std::any - comparison with void* and motivating examples
by Hitesh Kumar
From the article:
std::any is often compared with void* because the latter has been the de-facto choice for storing or passing the arbitrary objects in C++ since the outset. std::any is not a replacement of void*, but it is a safer substitute for the boilerplate patterns built around void*. Nevertheless, a comparison between the two is required for a better understanding of std::any.
CopperSpice: C++ Memory Model
New video on the CopperSpice YouTube Channel:
C++ Memory Model
by Barbara Geller and Ansel Sermersheim
About the video:
In this video we examine the C++ memory model and explain why it is a completely separate component from the multi-threading library added in C++11. We also look at the development of the memory model and its purpose in the C++ standard.
Please take a look and remember to subscribe!
C and C++ analysers detect cryptography-related security issues -- Alexandre Gigleux
Recent improvements to SonarCloud C++ analysis (coming soon in SonarQube 8.6!) bring new rules related to cryptography.
C and C++ analyzers detect cryptography-related security issues
by Alexandre Gigleux
From the article:
Communications should be encrypted to protect users’s privacy, but when it comes to really implement it, it’s not that easy due to the complexity of the area.
With SonarCloud, you are no longer alone thanks to these 7 new security rules focusing on detecting cryptography-related security issues