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.
By philsquared | Dec 7, 2021 09:47 AM | Tags: c++20
C++20 is here! In fact, as we head towards 2022, it’s been here a while. It may surprise some, but we’re only a few months from a freeze on new proposals for C++23! But let’s not get ahead of ourselves. C++20 is a big release - at least the biggest since C++11 - some have said it's the biggest since the first standard in 1998!
Modernizing your code with C++20
by Phil Nash
From the article:
Another possible surprise is that support for C++20 is currently better in GCC and MSVC++ than in Clang. Nonetheless, significant chunks of the new language and library features are widely available across the three major compilers, already. Many of them, including some less well known features, are there to make common things safer and easier. So we’ve been hard at work implementing analyzer rules to help us all take full advantage of the latest incarnation of “Modern C++”. This is just the start, but we already have 28 C++20-specific rules in the latest releases of all our products (with many more in development).
Let’s take a peek at some of them.
By Kirti Joshi | Dec 2, 2021 01:51 PM | Tags: None
The latest release of SonarLint supports Visual Studio 2022 and enables users to detect and fix coding issues in their C and C++ code. Enjoy the best-in-class capabilities of Visual Studio and SonarLint for your modern code development. SonarLint is a free static analysis extension and directly installable for VS 2022 from the Marketplace.
SonarLint for Visual Studio: v5.0
By Marco Comi
From the article:
The new Visual Studio version brings many new features and improvements. Starting from version 5.0 of SonarLint you are able to use our plugin in Visual Studio 2022 for all the languages we already support. The VS Marketplace page for the new version is here.
By Anastasia Kazakova | Dec 1, 2021 11:08 AM | Tags: None
CLion 2021.3 has become an even easier-to-use, more customizable, and more comprehensive IDE for unleashing the power of C and C++.
CLion 2021.3: New Remote Development, Better Data Views in Debugger, Docker Toolchain, Custom Compiler, Type Hints, and More
by Anastasia Kazakova
From the article:
CLion 2021.3 release is here! Check out the highlights and read the post for more details.
- New remote development mode (headless remote machine and thin local client)
- Debugger:
- Better data views in debugger
- RTOS thread views
- Toolchain updates
- Docker toolchain
- Custom compiler
- Environment script
- Windows-specific enhancements
- Ninja as the default CMake generator
- Type hints in the editor
- More powerful and accurate code analysis
By Adrien Hamelin | Nov 30, 2021 02:03 PM | Tags: c++20 advanced
Did you feel the need?
Conditional Members
by Barry Revzin
From the article:
I’d previously written a post about if constexpr (and how it’s not broken). I argued in that post how, broadly speaking, C++20 gives you the tools to solve the problems you want, even if they work a bit differently to D’s static if (with one notable exception, which this post greatly expands on). Now, over the past couple years, I’ve been working on a project that really is a deep dive into what Andrei calls “Design by Introspection.” This approach (for lack of a better definition), relies on conditioning functionality based on template parameters...
By Adrien Hamelin | Nov 30, 2021 02:02 PM | Tags: intermediate c++11
The series continue.
The Type-Traits Library: Type Checks
by Rainer Grimm
From the article:
The type-traits library is part of C++11 and supports type checks, type comparisons, and type modifications at compile-time. The library has more than 100 functions but grows with each new C++ standard release. Today, I present the type checks...
By Administrator | Nov 30, 2021 01:11 PM | Tags: None
The 2021-11 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| P0009R14 | MDSPAN | Christian Trott | 2021-11-14 | 2021-11 | P0009R13 | LEWG Library Evolution,LWG Library |
| P0323R11 | std::expected | JF Bastien | 2021-11-16 | 2021-11 | P0323R10 | LWG Library |
| P0447R17 | Introduction of std::hive to the standard library | Matt Bentley | 2021-11-03 | 2021-11 | P0447R16 | SG14 Low Latency,LEWG Library Evolution,All of WG21 |
| P0533R9 | constexpr for cmath and cstdlib | Oliver Rosten | 2021-11-12 | 2021-11 | P0533R8 | CWG Core,LWG Library |
| P1413R3 | Deprecate std::aligned_storage and std::aligned_union | CJ Johnson | 2021-11-22 | 2021-11 | P1413R2 | LEWG Library Evolution,LWG Library |
| P1467R6 | Extended floating-point types and standard names | David Olsen | 2021-11-10 | 2021-11 | P1467R5 | EWG Evolution,LEWG Library Evolution |
| P1467R7 | Extended floating-point types and standard names | David Olsen | 2021-11-24 | 2021-11 | P1467R6 | EWG Evolution,LEWG Library Evolution |
| P1494R2 | Partial program correctness | S. Davis Herring | 2021-11-12 | 2021-11 | P1494R1 | SG22 Compatability,EWG Evolution,LEWG Library Evolution,CWG Core |
| P1774R4 | Portable assumptions | Timur Doumler | 2021-11-17 | 2021-11 | P1774R3 | EWG Evolution |
| P1854R2 | Conversion to literal encoding should not lead to loss of meaning | Corentin Jabot | 2021-11-23 | 2021-11 | P1854R1 | SG16 Unicode |
| P1899R1 | stride_view | Christopher Di Bella | 2021-11-08 | 2021-11 | P1899R0 | SG9 Ranges,LEWG Library Evolution |
| P2071R1 | Named universal character escapes | Tom Honermann | 2021-11-09 | 2021-11 | P2071R0 | SG16 Unicode,EWG Evolution |
| P2093R10 | Formatted output | Victor Zverovich | 2021-11-13 | 2021-11 | P2093R9 | LEWG Library Evolution |
| P2198R3 | Freestanding Feature-Test Macros and Implementation-Defined Extensions | Ben Craig | 2021-11-12 | 2021-11 | P2198R2 | SG10 Feature Test,LEWG Library Evolution |
| P2249R3 | Mixed comparisons for smart pointers | Giuseppe D'Angelo | 2021-11-16 | 2021-11 | P2249R2 | LEWG Library Evolution |
| P2273R3 | Making std::unique_ptr constexpr | Andreas Fertig | 2021-11-09 | 2021-11 | P2273R2 | LWG Library |
| P2278R2 | cbegin should always return a constant iterator | Barry Revzin | 2021-11-16 | 2021-11 | P2278R1 | LEWG Library Evolution |
| P2286R3 | Formatting Ranges | Barry Revzin | 2021-11-16 | 2021-11 | P2286R2 | LEWG Library Evolution |
| P2302R1 | std::ranges::contains | Christopher Di Bella | 2021-11-08 | 2021-11 | P2302R0 | SG9 Ranges |
| P2338R2 | Freestanding Library: Character primitives and the C library | Ben Craig | 2021-11-11 | 2021-11 | P2338R1 | SG14 Low Latency,SG22 Compatability,LEWG Library Evolution |
| P2361R4 | Unevaluated strings | Corentin Jabot | 2021-11-23 | 2021-11 | P2361R3 | EWG Evolution |
| P2388R4 | Minimum Contract Support: either No_eval or Eval_and_abort | Andrzej Krzemieński | 2021-11-15 | 2021-11 | P2388R3 | SG21 Contracts,SG22 Compatability |
| P2407R1 | Freestanding Library: Partial Classes | Emil Meissner | 2021-11-23 | 2021-11 | P2407R0 | LEWG Library Evolution |
| P2408R3 | Ranges iterators as inputs to non-Ranges algorithms | David Olsen | 2021-11-08 | 2021-11 | P2408R2 | SG9 Ranges,LEWG Library Evolution |
| P2408R4 | Ranges iterators as inputs to non-Ranges algorithms | David Olsen | 2021-11-16 | 2021-11 | P2408R3 | LEWG Library Evolution |
| P2441R1 | views::join_with | Barry Revzin | 2021-11-16 | 2021-11 | P2441R0 | LEWG Library Evolution |
| P2443R1 | views::chunk_by | Tim Song | 2021-11-19 | 2021-11 | P2443R0 | LWG Library |
| P2446R1 | views::all_move | Barry Revzin | 2021-11-16 | 2021-11 | P2446R0 | LEWG Library Evolution |
| P2454R0 | 2021 November Library Evolution Polls | Bryce Adelstein Lelbach | 2021-11-03 | 2021-11 | LEWG Library Evolution | |
| P2461R1 | Closure-based Syntax for Contracts | Gašper Ažman | 2021-11-15 | 2021-11 | P2461R0 | SG21 Contracts |
| P2467R0 | Support exclusive mode for fstreams | Jonathan Wakely | 2021-11-15 | 2021-11 | LEWG Library Evolution | |
| P2477R1 | Allow programmer to control and detect coroutine elision by static constexpr bool must_elide() and | Chuanqi Xu | 2021-10-25 | 2021-11 | P2477R0 | EWG Evolution,LEWG Library Evolution |
| P2477R2 | Allow programmer to control and detect coroutine elision | Chuanqi Xu | 2021-11-14 | 2021-11 | P2477R1 | EWG Evolution,LEWG Library Evolution |
| P2483R0 | Support Non-copyable Types for single_view | Hui Xie | 2021-10-26 | 2021-11 | LEWG Library Evolution | |
| P2484R0 | Extending class types as non-type template parameters | Richard Smith | 2021-11-16 | 2021-11 | EWG Evolution | |
| P2485R0 | Do not add value_exists and value_or to C++23 | Jonathan Wakely | 2021-11-01 | 2021-11 | LEWG Library Evolution | |
| P2486R0 | Structured naming for function object and CPO values | Kirk Shoop | 2021-11-01 | 2021-11 | LEWG Library Evolution | |
| P2487R0 | Attribute-like syntax for contract annotations | Andrzej Krzemieński | 2021-11-12 | 2021-11 | SG21 Contracts,EWG Evolution | |
| P2489R0 | Library Evolution Plan for Completing C++23 | Bryce Adelstein Lelbach | 2021-11-09 | 2021-11 | LEWG Library Evolution | |
| P2490R0 | Zero-overhead exception stacktraces | Antony Peacock | 2021-11-25 | 2021-11 | LEWGI SG18: LEWG Incubator | |
| P2491R0 | Text encodings follow-up | Jens Maurer | 2021-11-15 | 2021-11 | SG16 Unicode,LEWG Library Evolution | |
| P2492R0 | Attending C++ Standards Committee Meetings During a Pandemic | René Ferdinand Rivera Morell | 2021-11-09 | 2021-11 | All of WG21 | |
| P2493R0 | Missing feature test macros for C++20 core papers | Barry Revzin | 2021-11-15 | 2021-11 | CWG Core |
By Adrien Hamelin | Nov 30, 2021 01:03 PM | Tags: c++20
More readability.
Designated Initializers in C++20
by Bartlomiej Filipek
From the article:
New Standard, new ways to initialize objects!
With C++20, we get a handy way of initializing data members. The new feature is called designated initializers and might be familiar to C programmers.
Let’s have a look at this small feature...
By Adrien Hamelin | Nov 28, 2021 11:56 PM | Tags: intermediate
Did you ever use that?
Design Patterns VS Design Principles: Template Method
by Jonathan Boccara
From the article:
In today’s episode of “Design Pattens VS Design Principles” series, we relate the Template Method design patterns to more general design principles. We’re showing how it relates to the Polymorphism design principle...
By Adrien Hamelin | Nov 28, 2021 11:54 PM | Tags: intermediate
Will you try?
Template Metaprogramming - Hybrid Programming
by Rainer Grimm
From the article:
First of all, hybrid programming is not an official term. I created it to emphasize a very interesting aspect of templates. The difference between function arguments and template arguments...
