October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Blog Staff | Sep 25, 2022 12:28 PM | Tags: None
Are you using concepts?
Static, Dynamic Polymorphism, CRTP and C++20’s Concepts
by Thomas Sedlmair
From the article:
Let's talk about Polymorphism, CRTP as a way to use static polymorphism and how C++20 can change the way how we write code...
By Blog Staff | Sep 25, 2022 12:23 PM | Tags: None
Do you know about std::ssize()?
Reducing Signed and Unsigned Mismatches with std::ssize()
by Bartlomiej Filipek
From the article:
In this article, I’ll show another technique that avoids mixing signed and unsigned types.
In my article Integer Conversions and Safe Comparisons in C++20 we learned about
cmp_*integer comparison functions that allow us to compare various types of integer types. The functions are safe because they help with mixing signed and unsigned types. In C++20, there’s another handy feature: the non-memberstd::ssize()function that returns a signed number of elements in a container.Let’s see how to use it...
By Administrator | Sep 23, 2022 08:01 AM | Tags: None
The 2022-09 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4917 | Working Draft, Standard for Programming Language C++ | Thomas Köppe | 2022-09-04 | 2022-09 | All of WG21 | |
| N4918 | Editors' Report - Programming Languages - C++ | Thomas Köppe | 2022-09-08 | 2022-09 | All of WG21 | |
| N4920 | Working Draft, C++ Extensions for Library Fundamentals, Version 3 | Thomas Köppe | 2022-08-15 | 2022-09 | All of WG21 | |
| N4921 | Editor's Report: C++ Extensions for Library Fundamentals, Version 3 | Thomas Köppe | 2022-08-15 | 2022-09 | All of WG21 | |
| N4922 | INCITS C++/WG21 agenda: 7-12 November 2022, Kona, HI US | John Spicer | 2022-09-05 | 2022-09 | All of WG21 | |
| P0543R2 | Saturation arithmetic | Jens Maurer | 2022-09-18 | 2022-09 | P0543R1 | LWG Library |
| P0792R11 | function_ref: a non-owning reference to a Callable | Vittorio Romeo | 2022-09-13 | 2022-09 | P0792R10 | LWG Library |
| P0957R9 | Proxy: A Polymorphic Programming Library | Mingxin Wang | 2022-09-15 | 2022-09 | P0957R8 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution |
| P0987R1 | polymorphic_allocator instead of type-erasure | Pablo Halpern | 2022-09-14 | 2022-09 | P0987R0 | LWG Library |
| P1030R5 | std::filesystem::path_view | Niall Douglas | 2022-09-15 | 2022-09 | P1030R4 | LEWG Library Evolution |
| P1985R3 | Universal template parameters | Gašper Ažman | 2022-09-17 | 2022-09 | P1985R1 | SG7 Reflection,EWG Evolution,LEWG Library Evolution |
| P2348R3 | Whitespaces Wording Revamp | Corentin Jabot | 2022-09-11 | 2022-09 | P2348R2 | EWG Evolution,CWG Core |
| P2495R1 | Interfacing stringstreams with string_view | Michael Hava | 2022-09-14 | 2022-09 | P2495R0 | LEWG Library Evolution |
| P2586R0 | Standard Secure Networking | Niall Douglas | 2022-09-13 | 2022-09 | SG4 Networking,LEWG Library Evolution | |
| P2587R3 | to_string or not to_string | Victor Zverovich | 2022-08-28 | 2022-09 | P2587R2 | LWG Library |
| P2588R1 | Relax std::barrier phase completion step guarantees | Gonzalo Brito | 2022-09-06 | 2022-09 | P2588R0 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2603R1 | member function pointer to function pointer | Jarrad Waterloo | 2022-09-04 | 2022-09 | P2603R0 | EWG Evolution,LEWG Library Evolution |
| P2620R2 | Improve the wording for Universal Character Names in identifiers | Corentin Jabot | 2022-09-13 | 2022-09 | P2620R1 | CWG Core |
| P2623R2 | implicit constant initialization | Jarrad J. Waterloo | 2022-09-12 | 2022-09 | P2623R1 | EWG Evolution |
| P2631R0 | Publish TS Library Fundamentals v3 Now! | Alisdair Meredith | 2022-09-12 | 2022-09 | LEWG Library Evolution,LWG Library | |
| P2636R0 | References to ranges should always be viewable | Hannes Hauswedell | 2022-09-14 | 2022-09 | SG9 Ranges,LEWG Library Evolution | |
| P2637R0 | Member visit and apply | Barry Revzin | 2022-09-17 | 2022-09 | LEWG Library Evolution | |
| P2638R0 | Intel's response to P1915R0 for std::simd parallelism in TS 2 | Daniel Towner | 2022-09-21 | 2022-09 | SG1 Concurrency and Parallelism,LEWG Library Evolution,LWG Library | |
| P2639R0 | Static Allocations | Torben Thaysen | 2022-09-21 | 2022-09 | EWGI SG17: EWG Incubator,LEWGI SG18: LEWG Incubator | |
| P2640R0 | Modules: Inner-scope Namespace Entities: Exported or Not? | Nathan Sidwell | 2022-09-12 | 2022-09 | EWG Evolution | |
| P2641R0 | Checking if a union alternative is active | Barry Revzin | 2022-09-17 | 2022-09 | LEWG Library Evolution | |
| P2642R0 | Padded mdspan layouts | Mark Hoemmen | 2022-09-14 | 2022-09 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2643R0 | Improving C++ concurrency features | Gonzalo Brito Gadeschi | 2022-09-15 | 2022-09 | SG1 Concurrency and Parallelism |
By Blog Staff | Sep 19, 2022 03:47 PM | Tags: None
Speaking of std::ssize...
std::ssize() in C++20
by Bartlomiej Filipek
From the article:
In this article, I’ll show another technique that avoids mixing signed and unsigned types.
In my article Integer Conversions and Safe Comparisons in C++20 we learned about
cmp_*integer comparison functions that allow us to compare various types of integer types. The functions are safe because they help with mixing signed and unsigned types. In C++20, there’s another handy feature: the non-memberstd::ssize()function that returns a signed number of elements in a container.Let’s see how to use it. ...
By Blog Staff | Sep 19, 2022 03:44 PM | Tags: None
Improving safety and security in GCC:
Enhance application security with FORTIFY_SOURCE
by Siddharth Sharma
From the article:
The FORTIFY_SOURCE macro provides lightweight support for detecting buffer overflows in various functions that perform operations on memory and strings. Not all types of buffer overflows can be detected with this macro, but it does provide an extra level of validation for some functions that are potentially a source of buffer overflow flaws. It protects both C and C++ code. ...
By Blog Staff | Sep 19, 2022 03:41 PM | Tags: None
Making C++ easier to understand:
The Future of C++ Compiler Diagnostics in MSVC and Visual Studio
by Xiang Fan
From the article:
We are working hard on improving the diagnostics experience in MSVC and Visual Studio. We began this work in Visual Studio 2022 version 17.3 and while not everything is ready yet, we would like to share the early progress...
By Blog Staff | Sep 19, 2022 11:22 AM | Tags: None
The second video from CppCon 2022 has now been posted:
CppCon 2022 talk is online: “Can C++ be 10x simpler & safer ... ?”
by Herb Sutter
From the post:
It was great to see many of you at CppCon, in person and online! It was a really fun conference this year, and the exhibitor hall felt crowded again which was a good feeling as we all start traveling more again.
The talk I gave on Friday is now on YouTube. In it I describe my experimental work on a potential alternate syntax for C++ (aka ‘syntax 2’ or Cpp2 for short) and my cppfront compiler that I’ve begun writing to implement it...
By Blog Staff | Sep 16, 2022 09:30 AM | Tags: None
The first CppCon 2022 video is now available.
Opening 2022 Keynote: Bjarne Stroustrup, prerelease
From the article:
CppCon 2022 is in midweek and so much has happened thus far in Aurora, Colorado!
Along with great talks from C++ experts, we’ve had social events and panels, including our annual Committee Fireside Chat where attendees had the opportunity to hear directly from C++ standard committee members.
CppCon wouldn’t be the same though without an opening keynote from C++’s creator, Bjarne Stroustrup. This year Bjarne’s focus was on using C++ in Constrained Environments.
This video is in “prerelease” and cannot be found directly on our YouTube channel, instead we are providing a direct link here only! Feel free to share this with colleagues and friends and impress them with your insider access ��
By Blog Staff | Sep 13, 2022 06:12 PM | Tags: None
Mixing integer types... what could go wrong? And how to make it go right?
Safe comparisons in C++20
by Bartlomiej Filipek
From the article:
Sometimes, If you mix different integer types in an expression, you might end up with tricky cases...
By Andrey Karpov | Sep 13, 2022 08:31 AM | Tags: stable vector folly::fbvector devector containers colony circular buffer
We are going to describe the arrangement of the most curious non-STL containers and their differences from the standard containers.
Non-standard containers in C++
by Evgeny Shulgin
From the article:
The boost::devector is a hybrid of the std::vector and the std::deque. This container allows fast insertion at both its beginning and its end, just like the deque. But this container still keeps the vector features, such as the contiguous storage area and the conditions for the invalidation of iterators/pointers.