C++ Day 2020--Marco Arena
Event report with some details on the online organization:
C++ Day 2020
by Marco Arena
December 2020
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
PVS-Studio 7.11 Release: IAR Arm, Diagnostics, FREE-FREE-FREE-FREE
This is the press release of the New Year's version of the PVS-Studio 7.11 analyzer. Since the new version includes only a few enhancements, let's take this opportunity to recall the options for free PVS-Studio use.
PVS-Studio 7.11 Release: IAR Arm, Diagnostics, FREE-FREE-FREE-FREE
by Andrey Karpov
From the article:
Support of the IAR Arm compilers is now available in the pvs-studio-analyzer utility. This family of compilers was previously supported only in the CLMonitor.exe utility on Windows. Now users of PVS-Studio for Linux can check the code written for these compilers as well. We added interception of compiler calls via ld-linux to the pvs-studio-analyzer utility.
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!