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 | 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...
By dapirian | Dec 13, 2021 12:43 PM | Tags: None
Trunk launched its public beta! Trunk combines 30+ linters, static analyzers, and formatters covering dozens of languages to create a one-stop-shop for checking your code.
Trunk Check - Code Quality Solved
by David Apirian
From the article:
Modern repositories include many technologies, each with its own set of linters. With 30+ linters and counting, Trunk makes it dead-simple to identify, install, configure, and run the right linters, static analyzers, and formatters for all your repos. Use the beta for free today.
Itself written in C++, Trunk makes it dead simple to run C++ linters like clang-tidy, adding intelligent caching, easy setup, and a language server for IDE support. Overall, Trunk makes it dead-simple to identify, install, configure, and run the right linters, static analyzers, and formatters for all your repos across multiple languages. Available as a cli, vscode extension, and github action.
By Andrey Karpov | Dec 10, 2021 02:39 AM | Tags: vs2022 visual studio 2022 sast pvs-studio misra c misra
This is the latest release of PVS-Studio in 2021. With it, the PVS-Studio team accomplishes several important goals. Now, PVS-Studio supports Visual Studio 2022 (.NET 6, C# 10.0). We implemented all diagnostics categorized as Mandatory in MISRA C.
PVS-Studio 7.16, expanding the horizons: MISRA C, Visual Studio 2022, .NET 6
by Andrey Karpov
From the article:
PVS-Studio supports 80% of the MISRA C standard for safety and security. The tool fully covers the warnings categorized as Mandatory and most of the warnings from the Required category.
By Anastasia Kazakova | Dec 8, 2021 10:52 AM | Tags: None
ReSharper C++ 2021.3 is now available!
ReSharper C++ 2021.3: Support for Visual Studio 2022, Unreal Engine File Templates, New C++20 and C Features
by Elvira Mustafina
From the article:
Check out the highlights and read the post for more details.
- Support for Visual Studio 2022. You will enjoy the same rich feature set as in other Visual Studio versions, but since Visual Studio 2022 is an x64 process, all ReSharper C++ features work faster.
- New C++20 features: auto-completion of designated initializers for aggregate initialization and modernizing inspections to help you adopt new library functions.
- File templates for Unreal Engine classes.
- Improved C support: C11
_Genericexpressions and thetypeofGNU extension.- Navigation in
gotostatements and inactive code.- Evaluation results for constant expressions in the Quick Info tooltip.
- Change Signature lets you control the C++17
[[nodiscard]]attribute.- New inspections with quick-fixes, and an update for Clang-Tidy with new checks from Clang 13.
By Guy | Dec 8, 2021 10:49 AM | Tags: None
The Reflection TS was blessed with an example implementation recently, available on Compiler Explorer. Clément Pirelli gave it a spin and wrote a small post about what he found.
C++ Reflection TS: A First Look
by Clément Pirelli
From the article:
In this post, I’ll explain the basic ideas of the specification, how to write a simple generic “enum to string” function and go into a bit more detail with a proof-of-concept serialization function.