By Jens Maurer | Sep 2, 2022 03:47 AM | Tags: c++11 basics
Variadic templates
Modern C++ In-Depth — Variadic Templates and Parameter Packs
by Phani Adusumilli
From the article
What if we could tell the compiler that it should expect to receive zero or more parameters (regardless of type)?
By Blog Staff | Sep 1, 2022 04:43 AM | Tags: None
Another keynote for CppCon which starts in just 9 days... register today!
CppCon 2022 Keynote: How C++23 Changes the Way We Write Code by Timur Doumler Live, In Person
From the announcement:
We’re happy to announce: Timur Doumler will be in Aurora live, in person to deliver key insights on C++23 best practices.
Here is the abstract for Timur’s talk:
C++20 was a huge release: coroutines, concepts, ranges, and modules profoundly changed the way we write code and think about C++. In comparison, C++23 is a lot smaller in scope: its primary mission is to complete C++20, to fill holes, and to fix issues. Nevertheless, some great new features made the cut this time around, both in the standard library and in the core language. This is even more remarkable considering that the entire feature design phase of C++23 took place during the COVID-19 pandemic, challenging the ISO C++ committee to completely reinvent how we work together.This is not a firehose talk about C++23 that tries to cram as many additions and improvements as possible into one hour. Instead, we deliberately focus on just a handful of new features that are going to noticeably change and improve the experience of the everyday C++ programmer. We will talk about how `std::expected` improves error handling, the huge impact that `std::mdspan` will have on scientific computing, how deducing `this` greatly simplifies longstanding C++ idioms such as CRTP, and how `std::print` will forever change how we write “Hello, World”.
Timur is the Developer Advocate for C++ tools at JetBrains and an active member of the ISO C++ standard committee. As a developer, he worked many years in the audio and music technology industry and co-founded the music tech startup Cradle. Timur is passionate about building inclusive communities, clean code, good tools, low latency, and the evolution of the C++ language.
Registration is now open. Tickets are now available for both online attendees and in-person attendees.
By Meeting C++ | Sep 1, 2022 01:59 AM | Tags: meetingcpp community
The monthly listing of upcoming C++ User Group meetings at Meeting C++:
Upcoming C++ User Group Meetings in September 2022
by Jens Weller
From the article:
The monthly listing of upcoming C++ User Group meetings! This time with a new group in Toulouse!
Meeting C++ online has a few meetings in September and hosts a lightning talk session tonight:
31.8 C++ UG Meeting C++ online - C++ Lightning Talks
1.9 C++ UG Meeting C++ online - C++ Community Planning session
7.9 C++ UG Meeting C++ online - September - Corolib: distributed programming with C++ coroutines
8.9 C++ UG Meeting C++ online - Meeting C++ online book & tool fair
13.9 C++ UG Meeting C++ online - Hiring for C++ with Meeting C++
20.9 C++ UG Meeting C++ online - Online C++ job fair (afternoon CEST)
21.9 C++ UG Meeting C++ online - Online C++ job fair (evening CEST)
By Meeting C++ | Aug 27, 2022 03:58 AM | Tags: meetingcpp community
Meeting C++ online celebrates its 2 years anniversary with lightning talks!
Lightning talks and 2 years of Meeting C++ online
by Jens Weller
From the article
Next week Meeting C++ online will host its first lightning talk session to celebrate its 2 year anniversary!
There are still some open spots, so if you want to submit your lightning talk, you still can! But yesterdays deadline already has given us enough talks to fill one hour easily. So join the event if you have time to attend next week wednesday!
By Legalize Adulthood | Aug 22, 2022 12:52 PM | Tags: None
Utah C++ Programmers has released a new video:
Serialization with Boost.Serialization
by Richard Thomson
From the video description:
Many times you need a stable, versioned, archivable representation of your internal data structures. Serialization is one means of achieving this goal. Serialization is often used with REST APIs as a means of conveying data structures into and out of your application. XML and JSON formats are commonly used to encode your data structure. But serialization often is not just a data format.
How do you represent different versions of your data structures as they evolve over time? How do you ensure that old versions of your data structures interoperate with new versions of your data structures and vice-versa? While interoperability and backwards compatibility are an application responsibility, versioning itself is something you want from your serialization layer.
This month, Richard Thomson will give us an introduction to serialization via the Boost.Serialization library, one of the older and more mature boost libraries having first been contributed to Boost in 2002.
By Administrator | Aug 22, 2022 09:08 AM | Tags: None
The 2022-08 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4914 | WG21 2022-07 Admin telecon minutes | Nina Ranns | 2022-08-21 | 2022-08 | All of WG21 | |
| N4915 | Business Plan and Convener's Report: ISO/IEC JTC1/SC22/WG21 (C++) | Herb Sutter | 2022-07-20 | 2022-08 | All of WG21 | |
| N4916 | WG21 2022-07 Virtual Meeting Minutes of Meeting | Nina Ranns | 2022-08-12 | 2022-08 | All of WG21 | |
| P0843R5 | static_vector | Gonzalo Brito Gadeschi | 2022-08-14 | 2022-08 | P0843R4 | LEWG Library Evolution |
| P1255R9 | A view of 0 or 1 elements: views::maybe | Steve Downey | 2022-08-15 | 2022-08 | P1255R8 | SG9 Ranges,LEWG Library Evolution |
| P2019R1 | Usability improvements for std::thread | Corentin Jabot | 2022-08-09 | 2022-08 | P2019R0 | SG1 Concurrency and Parallelism |
| P2164R6 | views::enumerate | Corentin Jabot | 2022-08-09 | 2022-08 | P2164R5 | SG9 Ranges,LEWG Library Evolution |
| P2264R4 | Make assert() macro user friendly for C and C++ | Peter Sommerlad | 2022-08-08 | 2022-08 | P2264R3 | LEWG Library Evolution |
| P2477R3 | Allow programmers to control coroutine elision | Chuanqi Xu | 2022-07-22 | 2022-08 | P2477R2 | EWG Evolution |
| P2511R2 | Beyond operator(): NTTP callables in type-erased call wrappers | Zhihao Yuan | 2022-08-14 | 2022-08 | P2511R1 | LWG Library |
| P2517R1 | Add a conditional noexcept specification to std::apply | Hewill Kang | 2022-08-21 | 2022-08 | P2517R0 | LEWG Library Evolution |
| P2537R1 | Relax va_start Requirements to Match C | JeanHeyd Meneide | 2022-07-22 | 2022-08 | P2537R0 | LEWG Library Evolution |
| P2581R1 | Specifying the Interoperability of Built Module Interface Files | Daniel Ruoso | 2022-07-28 | 2022-08 | P2581R0 | SG15 Tooling |
| P2587R2 | to_string or not to_string | Victor Zverovich | 2022-08-09 | 2022-08 | P2587R1 | LWG Library |
| P2611R0 | 2022-07 Library Evolution Poll Outcomes | Bryce Adelstein Lelbach | 2022-07-27 | 2022-08 | LEWG Library Evolution | |
| P2620R1 | Lifting artificial restriction on universal character names | Corentin Jabot | 2022-08-10 | 2022-08 | P2620R0 | SG16 Unicode,SG22 Compatability,EWG Evolution |
| P2621R1 | UB? In my Lexer? | Corentin Jabot | 2022-08-09 | 2022-08 | P2621R0 | SG22 Compatability,EWG Evolution |
| P2623R1 | implicit constant initialization | Jarrad J. Waterloo | 2022-08-14 | 2022-08 | P2623R0 | EWG Evolution |
| P2625R0 | Slides: Life without operator() (P2511R1 presentation) | Zhihao Yuan | 2022-07-19 | 2022-08 | LEWG Library Evolution | |
| P2626R0 | charN_t incremental adoption: Casting pointers of UTF character types | Corentin Jabot | 2022-08-09 | 2022-08 | SG16 Unicode,LEWG Library Evolution | |
| P2627R0 | WG21 2022-07 Virtual Meeting Record of Discussion | Nina Ranns | 2022-08-12 | 2022-08 | All of WG21 | |
| P2628R0 | Extend barrier APIs with memory_order | Gonzalo Brito Gadeschi | 2022-08-11 | 2022-08 | SG1 Concurrency and Parallelism | |
| P2629R0 | barrier token-less split arrive/wait | Gonzalo Brito Gadeschi | 2022-08-11 | 2022-08 | SG1 Concurrency and Parallelism | |
| P2630R0 | Submdspan | Christian Trott | 2022-08-14 | 2022-08 | LEWG Library Evolution | |
| P2633R0 | thread_local_inherit: Enhancing thread-local storage | Justin Cooke | 2022-08-21 | 2022-08 | SG1 Concurrency and Parallelism,EWG Evolution | |
| P2634R0 | Allow qualifiers in constructor declarations | Justin Cooke | 2022-08-21 | 2022-08 | EWG Evolution | |
| P2635R0 | Enhancing the break statement | Justin Cooke | 2022-08-21 | 2022-08 | EWG Evolution |
By Blog Staff | Aug 18, 2022 01:11 PM | Tags: None
The Main Program for CppCon 2022 is now live:
CppCon 2022 Program Announced
Register now to attend on-site or on-line!
From the announcement:
This year, CppCon is a hybrid format, so we are presenting four tracks for onsite attendees and five tracks for online attendees.
Online attendees will be able to participate in onsite sessions via “simul-cast” for most sessions. (Online attendees with On-Demand Session Access will have the ability to view recorded versions of all sessions–onsite and online–shortly after they happen.)
We’ll have over seventy breakout sessions delivered onsite and fifty additional remote sessions by the best C++ presenters in the industry, many returning from previous years as well as some exciting new voices, some of whom are able to present only because we are offering a remote presenting possibility. In addition, we’ll present our traditional onsite plenary session every day and an online opening keynote. We’ve already announced our onsite Opening Keynote and three other plenary talks and will be announcing our other two headline talks here in coming days.
This year’s Main Program features five special tracks including the Back to Basics Track, the Embedded Track, the Software Design Track, and the band new Scientific Computing Track and Tooling Track.
In addition to the Main Program, we’ll have the panels, lightning talks, Open Content talks, BOFs, exhibitors, social events, and classes that attendees have enjoyed in past years.
Most of the program is published, but we are still working a few surprises, so keep checking back.
We’d like to thank the Program Committee, our speakers, and the many professionals who proposed talks which we, unfortunately, just couldn’t squeeze in this year. Thank you for your hard work and enthusiastic support for this year’s program!
We hope to see you all in less than a month so register now.
By Meeting C++ | Aug 18, 2022 07:11 AM | Tags: performance intermediate debugging debug basics advanced
A post on conditional breakpoints, including two surveys about their usage.
About conditional brealkpoits
by Jens Weller
From the article:
A few weeks ago someone asked me for advice on finding a specific bug in a larger C++ code base...
I don't remember much of the details, but one of the challenges was that at least some of the code based used public members, and in order to find the bug a change in these members is what they wanted to understand. Adding out put statements into a setter function wasn't possible, as the code did not have those. My suggestion was using a conditional breakpoint. And it also made me curious, if and how they're used with in our community.
By Jordi Mon Companys | Aug 16, 2022 07:15 AM | Tags: None
A review of the Seastar framework
Seastar - Asynchronous C++ framework
By Roman Gershman
From the article:
Seastar shows the true potential of the hardware it utilizes. It has lots of pre-built constructs to cover many synchronization scenarios and I think it’s a perfect candidate to analyze how futures and continuations code might look in C++.
By Meeting C++ | Aug 15, 2022 06:47 AM | Tags: meetingcpp intermediate community c++20 c++17 basics
Meeting C++ celebrates its 2 years anniversary with lightning talks. Submit yours until August 25th!
Meeting C++ online lightning talk meetup on August 31st
by Jens Weller