September 13-19, Aurora, CO, USA
October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By philsquared | Dec 25, 2021 12:04 PM | Tags: None
Announcing dates and keynote speakers for C++ on Sea 2022!
C++ on Sea 2022
by Phil Nash
From the article:
Yes, C++ on Sea is back by the sea! Or at least that is the current plan. We have booked the Leas Cliff Hall, once again, for July 4th-7th 2022. We're now busy, behind the scenes, working out all the details. We'll have updates first thing in the new year when we'll also open the call for speakers.
By Lesley Lai | Dec 25, 2021 12:03 PM | Tags: None
An introduction of std::align with the arena allocator as motivational example
Little C++ Standard Library Utility: std::align
by Lesley Lai
From the article:
Recently, I learned about std::align, which is one of the lesser-known functions in the C++ standard library because of its limited use cases. Since it is hard to describe without a specific use case, I will use a simple implementation of an arena allocator as a motivational example.
By Andrey Karpov | Dec 22, 2021 02:33 AM | Tags: sta pvs-studio open source bugs
It's freezing outside, everyone has already decorated the Christmas tree and bought tangerines. New Year is coming! So, it's time to meet the Top 10 interesting bugs found by the PVS-Studio C++ analyzer in 2021.
Top 10 bugs found in C++ projects in 2021
by Vladislav Stolyarov
From the article:
Let's talk about... HTML! PVS-Studio provides diagnostics that don't just check code – they also look for abnormalities in string literals. The code above triggered one of these diagnostics. Such cases are quite rare. That's why, this one is so intriguing. Someone intended to create one list but added two tags that open this list instead of one. This is clearly a typo. The first tag must open the list, and the second one must close it.
By Adrien Hamelin | Dec 20, 2021 03:58 PM | Tags: c++20
The series continue.
C++20 Concepts: Part 5 (Advanced use cases)
by Gajendra Gulgulia
From the article:
In this article, I’ll explain and demonstrate how to define concepts that constrain multiple template parameters and more importantly how to use them in a generic function. As promised in the part 3 of the series, I’ll explain this using a function comparing for equality of two different types T and U
By Adrien Hamelin | Dec 20, 2021 03:57 PM | Tags: intermediate
The series continue.
The Type-Traits Library: Correctness
by Rainer Grimm
From the article:
The two main goals of the type-traits library are very convincing: correctness and optimization. Today, I write about correctness...
By Adrien Hamelin | Dec 20, 2021 03:55 PM | Tags: c++20 c++17 c++14
Are you using them?
The Evolutions of Lambdas in C++14, C++17 and C++20
by Jonathan Boccara
From the article:
Lambdas are one of the most popular features of Modern C++. Since their introduction in C++11, they’ve become ubiquitous in C++ code.
But since their appearance in C++11, they have evolved and gained significant features. Some of those features help write more expressive code, and since using lambdas is so common now, it is worth it to spend time learning what we can do with them.
Our goal here is to cover the major evolutions of lambdas, but not all the little details. A comprehensive coverage of lambdas would be more suited for a book than an article. If you want to dig more, I recommend Bartek’s book C++ Lambda Story, that will tell you everything.
The general evolution of lambdas is to give them able the capabilities of function objects manually defined.
This articles assumes you know the basics of lambdas in C++11. Let’s take it from C++14...
By Administrator | Dec 19, 2021 01:36 PM | Tags: None
The 2021-12 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| P0493R3 | Atomic maximum/minimum | Al Grant | 2021-12-17 | 2021-12 | P0493R2 | SG1 Concurrency and Parallelism |
| P1467R8 | Extended floating-point types and standard names | David Olsen | 2021-12-16 | 2021-12 | P1467R7 | EWG Evolution,LEWG Library Evolution |
| P1673R6 | A free function linear algebra interface based on the BLAS | Mark Hoemmen | 2021-12-14 | 2021-12 | P1673R5 | LEWG Library Evolution |
| P1774R5 | Portable assumptions | Timur Doumler | 2021-12-16 | 2021-12 | P1774R4 | EWG Evolution,CWG Core |
| P2093R11 | Formatted output | Victor Zverovich | 2021-12-06 | 2021-12 | P2093R10 | LWG Library |
| P2152R1 | Querying the alignment of an object | Inbal Levi | 2021-11-30 | 2021-12 | P2152R0 | SG22 Compatability,EWG Evolution |
| P2173R1 | Attributes on Lambda-Expressions | Daveed Vandevoorde | 2021-12-09 | 2021-12 | P2173R0 | All of WG21 |
| P2198R4 | Freestanding Feature-Test Macros and Implementation-Defined Extensions | Ben Craig | 2021-12-13 | 2021-12 | P2198R3 | SG10 Feature Test,LEWG Library Evolution |
| P2248R3 | Enabling list-initialization for algorithms | Giuseppe D'Angelo | 2021-12-17 | 2021-12 | P2248R2 | SG6 Numerics,SG9 Ranges,LEWG Library Evolution |
| P2283R2 | constexpr for specialized memory algorithms | Michael Schellenberger Costa | 2021-11-25 | 2021-12 | P2283R1 | LEWG Library Evolution |
| P2286R4 | Formatting Ranges | Barry Revzin | 2021-12-17 | 2021-12 | P2286R3 | LEWG Library Evolution |
| P2300R3 | `std::execution` | Michał Dominiak | 2021-12-05 | 2021-12 | P2300R2 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2302R2 | std::ranges::contains | Christopher Di Bella | 2021-12-12 | 2021-12 | P2302R1 | SG9 Ranges |
| P2329R0 | Move, Copy, and Locality at Scale | Pablo Halpern | 2021-12-13 | 2021-12 | All of WG21 | |
| P2363R2 | Extending associative containers with the remaining heterogeneous overloads | Konstantin Boyarinov | 2021-12-07 | 2021-12 | P2363R1 | LEWG Library Evolution |
| P2374R2 | views::cartesian_product | Sy Brand | 2021-12-13 | 2021-12 | P2374R1 | SG9 Ranges,LEWG Library Evolution |
| P2374R3 | views::cartesian_product | Sy Brand | 2021-12-13 | 2021-12 | P2374R2 | LEWG Library Evolution |
| P2387R3 | Pipe support for user-defined range adaptors | Barry Revzin | 2021-12-17 | 2021-12 | P2387R2 | LEWG Library Evolution |
| P2416R1 | Presentation of requirements in the standard library | Jens Maurer | 2021-12-15 | 2021-12 | P2416R0 | LWG Library |
| P2438R1 | std::string::substr() && | Federico Kircheis | 2021-11-30 | 2021-12 | P2438R0 | LEWG Library Evolution |
| P2440R1 | ranges::iota, ranges::shift_left, and ranges::shift_right | Tim Song | 2021-12-05 | 2021-12 | P2440R0 | LWG Library |
| P2442R1 | Windowing range adaptors: views::chunk and views::slide | Tim Song | 2021-12-05 | 2021-12 | P2442R0 | LWG Library |
| P2447R1 | std::span and the missing constructor | Federico Kircheis | 2021-12-17 | 2021-12 | P2447R0 | LEWG Library Evolution |
| P2455R0 | 2021 November Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2021-12-08 | 2021-12 | LEWG Library Evolution | |
| P2456R0 | 2021 December Library Evolution Polls | Bryce Adelstein Lelbach | 2021-12-08 | 2021-12 | LEWG Library Evolution | |
| P2468R1 | The Equality Operator You Are Looking For | Barry Revzin, Bjarne Stroustrup, Cameron DaCamara, Daveed Vandevoorde, Gabriel Dos Reis, Herb Sutter, Jason Merrill, Jonathan Caves, Richard Smith, Ville Voutilainen | 2021-12-16 | 2021-12 | P2468R0 | CWG Core |
| P2473R1 | Distributing C++ Module Libraries | Daniel Ruoso | 2021-12-02 | 2021-12 | P2473R0 | SG15 Tooling |
| P2474R0 | views::repeat | Michał Dominiak | 2021-12-13 | 2021-12 | SG9 Ranges,LEWG Library Evolution | |
| P2486R1 | Structured naming for function object and CPO values | Kirk Shoop | 2021-12-16 | 2021-12 | P2486R0 | LEWG Library Evolution |
| P2494R0 | Relaxing range adaptors to allow for move only types | Michał Dominiak | 2021-12-13 | 2021-12 | SG9 Ranges,LEWG Library Evolution | |
| P2498R0 | Forward compatibility of text_encoding with additional encoding registries | Peter Brett | 2021-12-13 | 2021-12 | SG16 Unicode,LEWG Library Evolution | |
| P2499R0 | string_view range constructor should be explicit | James Touton | 2021-12-07 | 2021-12 | LEWG Library Evolution | |
| P2501R0 | Undo the rename of views::move and views::as_const | Ville Voutilainen | 2021-12-14 | 2021-12 | LEWG Library Evolution | |
| P2502R0 | std::generator: Synchronous Coroutine Generator for Ranges | Casey Carter | 2021-12-13 | 2021-12 | LEWG Library Evolution | |
| P2504R0 | Computations as a global solution to concurrency | Lucian Radu Teodorescu | 2021-12-11 | 2021-12 | SG1 Concurrency and Parallelism,LEWG Library Evolution | |
| P2505R0 | Monadic Functions for std::expected | Jeff Garland | 2021-12-15 | 2021-12 | LEWG Library Evolution,LWG Library | |
| P2507R0 | Only [[assume]] conditional-expressions | Peter Brett | 2021-12-13 | 2021-12 | EWG Evolution | |
| P2508R0 | Exposing std::basic-format-string | Barry Revzin | 2021-12-17 | 2021-12 | LEWG Library Evolution | |
| P2509R0 | A proposal for a type trait to detect value-preserving conversions | Giuseppe D'Angelo | 2021-12-17 | 2021-12 | SG6 Numerics,LEWG Library Evolution | |
| P2510R0 | Formatting pointers | Mark de Wever | 2021-12-17 | 2021-12 | LWG Library |
By Adrien Hamelin | Dec 14, 2021 12:12 PM | Tags: c++20
The series continue.
C++20 Concepts: part 4
by Gajendra Gulgulia
From the article:
In this issue of the concepts tutorial, I’ll discuss in detail about abbreviated function template syntax , constraining auto with abbreviated function template syntax , constraining deduced return type, i.e. constraining the auto return type with concepts...
By Adrien Hamelin | Dec 14, 2021 12:11 PM | Tags: stl
The series continue.
The Type-Traits Library: std::is_base_of
by Rainer Grimm
From the article:
I finished the last article on the Type-Traits library with the challenge of explaining the std::is_base_of and std::is_convertible functions. Today I'm excited to present the answer from Mr. Helmut Zeisel...
By Adrien Hamelin | Dec 14, 2021 12:10 PM | Tags: stl
The series continue.
The Type-Traits Library: Type Comparisons
by Rainer Grimm
From the article:
In my last post "The Type-Traits Library: Type Checks" I introduced type checks at compile time with the type-traits library. Today, I write about type comparisons at compile time...