October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Giovanni Dicanio | Apr 28, 2023 01:11 PM | Tags: None
Have you ever wondered how many options for strings are available in C++? This blog post enumerates some of those:
How Many Strings Does C++ Have?
by Giovanni Dicanio
From the article:
Now, let’s enter – drumroll, please – The Realm of C++! And the fun begins
By Ansel Sermersheim | Apr 28, 2023 01:10 PM | Tags: None
New video on the CopperSpice YouTube Channel:
Docker for Developers
by Barbara Geller and Ansel Sermersheim
About the video:
Docker is a container, but what does it actually store? Our new video explains how Docker is beneficial to the development process and not simply a deployment tool. We also discuss the differences between Docker and a VM.
Please take a look and remember to subscribe.
By Giovanni Dicanio | Apr 28, 2023 01:08 PM | Tags: None
What is the Small String Optimization (SSO)?
Let's discover that in the following blog post:
The C++ Small String Optimization
by Giovanni Dicanio
From the article:
How do “Connie” and “meow” differ from “The Commodore 64 is a great computer”?
In several implementations, [...], the STL string classes are empowered by an interesting optimization: The Small String Optimization (SSO).
By Marco Arena | Apr 28, 2023 06:27 AM | Tags: events conferences community
A full day of C++ in Rome (Italy) on June 10:
Italian C++ Conference 2023
An event organized by the Italian C++ Community.
Sponsors: AIV, Luxoft, KDAB, ZURU, think-cell, Qubica AMF.
International attendees are welcome: talks are all in English.
In a nutshell
The Italian C++ Conference is the greatest international conference about C++ hosted in Italy. Organized by the Italian C++ Community, the conference is not-for-profit and this year (7th edition) takes place in Rome, hosted at Università degli Studi Roma Tre. The purpose of this one-day event is to bring together the C++ software developer community in Italy and to promote the understanding and use of modern C++ standards, and best practices, constantly evolving.
Also...The Italian C++ Community celebrates its 10th anniversary this year and we are going to celebrate somehow...NO SPOILER!
Who should attend the Italian C++ Conference 2023?
This event is made by passionate C++ professionals for C++ professionals, students and enthusiasts.
What can I find at the Italian C++ Conference 2023?
- Talks: 10x50-min and 2x30-min tech talks.
- Networking
- Sponsors: some are hiring and will be there!
- Food: 2 coffee breaks and one lunch included
- Italian C++ Community's 10th anniversary celebration
You can refer to the detailed program for more information.
When does the Italian C++ Conference 2023 take place?
The event will be held on June 10, 2023 at Università degli Studi Roma Tre, in Rome.
Check-in at 8.45 AM. The event starts at 9.15 AM and will last for a full day.
Who supports this event?
Sponsors: AIV, Luxoft, KDAB, ZURU, think-cell, Qubica AMF.Do I need to register?
The Italian C++ Conference 2023 is free, but you must register to facilitate the organization of the event. You can register here.
By Blog Staff | Apr 27, 2023 09:43 AM | Tags: None
The Model-View-Controller (MVC) is one of the classic architectural patterns from the book "Pattern-Oriented Software Architecture, Volume 1". It addresses interactive applications with a flexible human-machine interface.
Model-View-Controller
by Rainer Grimm
From the article:
The MVC divides the program logic of a user interface into separate components model, view, and controller. The model manages the data and rules of the application. The view represents the data, and the controller interacts with the user.
Purpose
- User interfaces need to be changed frequently
- Different user interfaces must be supported
- The data model is stable
Solution
- The application is divided into the components Model (data model), View (output components), and Controller (input components)
- Multiple output components can use the same data model
By Blog Staff | Apr 27, 2023 09:06 AM | Tags: None
Over the past week, we ran our 2023 annual global C++ developer survey. Thank you to everyone who responded. As promised, here is a summary of the results:
CppDevSurvey-2023-summary.pdf
The results have now been forwarded to the C++ standards committee to help inform C++ evolution. Your feedback will be very helpful, and thank you again for your participation! Stay safe, everyone.
By Administrator | Apr 25, 2023 02:50 PM | Tags: None
The 2023-04 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4943 | WG21 February 2023 Issaquah Minutes of Meeting | Nina Ranns | 2023-03-06 | 2023-04 | All of WG21 | |
| N4944 | Working Draft, Standard for Programming Language C++ | Thomas Köppe | 2023-03-22 | 2023-04 | All of WG21 | |
| N4945 | Editors' Report - Programming Languages - C++ | Thomas Köppe | 2023-03-23 | 2023-04 | All of WG21 | |
| P0876R13 | fiber_context - fibers without scheduler | Oliver Kowalke | 2023-03-02 | 2023-04 | P0876R12 | LEWG Library Evolution |
| P1144R7 | std::is_trivially_relocatable | Arthur O'Dwyer | 2023-03-10 | 2023-04 | P1144R6 | EWGI SG17: EWG Incubator,LEWGI SG18: LEWG Incubator,EWG Evolution,LEWG Library Evolution |
| P1673R12 | A free function linear algebra interface based on the BLAS | Mark Hoemmen | 2023-03-14 | 2023-04 | P1673R11 | LWG Library |
| P1885R11 | Naming Text Encodings to Demystify Them | Corentin Jabot | 2023-03-22 | 2023-04 | P1885R10 | LWG Library |
| P2022R1 | Rangified version of lexicographical_compare_three_way | Ran Regev | 2023-03-11 | 2023-04 | P2022R0 | SG9 Ranges,LEWG Library Evolution |
| P2287R2 | Designated-initializers for base classes | Barry Revzin | 2023-03-12 | 2023-04 | P2287R1 | EWG Evolution |
| P2407R3 | Freestanding Library: Partial Classes | Emil Meissner | 2023-03-05 | 2023-04 | P2407R2 | LWG Library |
| P2447R3 | std::span over an initializer list | Arthur O'Dwyer | 2023-03-14 | 2023-04 | P2447R2 | LEWG Library Evolution |
| P2530R3 | Hazard Pointers for C++26 | Maged Michael | 2023-03-02 | 2023-04 | P2530R2 | LWG Library |
| P2545R4 | Read-Copy Update (RCU) | Paul E. McKenney | 2023-03-08 | 2023-04 | P2545R3 | LWG Library |
| P2630R3 | Submdspan | Christian Trott | 2023-03-15 | 2023-04 | P2630R2 | LEWG Library Evolution,LWG Library |
| P2690R1 | Presentation for C++17 parallel algorithms and P2300 | Ruslan Arutyunyan | 2023-03-16 | 2023-04 | P2690R0 | SG1 Concurrency and Parallelism,LEWG Library Evolution |
| P2746R1 | Deprecate and Replace Fenv Rounding Modes | Hans Boehm | 2023-03-14 | 2023-04 | P2746R0 | SG6 Numerics,LEWG Library Evolution |
| P2752R1 | Static storage for braced initializers | Arthur O'Dwyer | 2023-03-10 | 2023-04 | P2752R0 | EWG Evolution,CWG Core |
| P2757R1 | Type checking format args | Barry Revzin | 2023-03-13 | 2023-04 | P2757R0 | LEWG Library Evolution |
| P2780R0 | Caller-side precondition checking, and Eval_and_throw | Ville Voutilainen | 2023-03-02 | 2023-04 | SG21 Contracts | |
| P2806R1 | do expressions | Barry Revzin | 2023-03-12 | 2023-04 | P2806R0 | EWG Evolution |
| P2809R0 | Trivial infinite loops are not Undefined Behavior | JF Bastien | 2023-03-14 | 2023-04 | SG1 Concurrency and Parallelism,SG22 Compatability,EWG Evolution | |
| P2811R0 | Contract Violation Handlers | Joshua Berne | 2023-03-20 | 2023-04 | SG21 Contracts | |
| P2811R1 | Contract Violation Handlers | Joshua Berne | 2023-03-20 | 2023-04 | P2811R0 | SG21 Contracts |
| P2817R0 | The idea behind the contracts MVP | Andrzej Krzemieński | 2023-03-05 | 2023-04 | SG21 Contracts | |
| P2818R0 | Uniform Call Syntax for explicit-object member functions | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2819R0 | Add tuple protocol to complex | Michael Florian Hava | 2023-02-23 | 2023-04 | SG6 Numerics,LEWG Library Evolution | |
| P2824R0 | WG21 February 2023 Issaquah meeting Record of Discussion | Nina Ranns | 2023-03-06 | 2023-04 | All of WG21 | |
| P2825R0 | calltarget(unevaluated-call-expression) | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2826R0 | Replacement functions | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2827R0 | Floating-point overflow and underflow in from_chars (LWG 3081) | Zhihao Yuan | 2023-03-14 | 2023-04 | LEWG Library Evolution,LWG Library | |
| P2828R0 | Copy elision for direct-initialization with a conversion function (Core issue 2327) | Brian Bi | 2023-03-13 | 2023-04 | CWG Core | |
| P2830R0 | constexpr type comparison | Gašper Ažman | 2023-03-15 | 2023-04 | EWG Evolution | |
| P2833R0 | Freestanding Library: inout expected span | Ben Craig | 2023-03-13 | 2023-04 | LEWG Library Evolution | |
| P2836R0 | std::const_iterator often produces an unexpected type | Christopher Di Bella | 2023-03-20 | 2023-04 | SG9 Ranges,LEWG Library Evolution,LWG Library | |
| P2838R0 | Unconditional contract violation handling of any kind is a serious problem | Ville Voutilainen | 2023-03-22 | 2023-04 | SG21 Contracts |
By Meeting C++ | Apr 25, 2023 01:07 AM | Tags: meetingcpp community
Join us tonight (20:00 CEST/Berlin/Amsterdam) for the Meeting C++ online book & tool fair!
Meeting C++ online book & tool fair
About the event:
Tonight will featuring 3 tools and one book in the fair and the kick off livestream with demos at 20:00 CEST:
- Undo.io
- Modern C++ for absolute Beginners by Slobodan Dmitrović
- Conan 2.0
- KDABs open source tools: hotspot, heaptrack, gammaray and more
The second part of the event will be in the Hubilo lounge, where you can visit each of the above tools and books at their own table and ask your questions!
By Blog Staff | Apr 24, 2023 01:21 PM | Tags: None
Optimizing compilers seek try to push as much of the computation as possible at compile time.
C++20: consteval and constexpr Functions
by Daniel Lemire
From the article:
In modern C++, you can declare a function as ‘constexpr’, meaning that you state explicitly that the function may be executed at compile time.
The constexpr qualifier is not magical. There may not be any practical difference in practice between an inline function and a constexpr function, as in this example:
inline int f(int x) { return x+1; } constexpr int fc(int x) { return x+1; }
By TartanLlama | Apr 23, 2023 11:13 AM | Tags: None
std::optional has been updated in C++23, and std::expected added as a new way of representing errors in your code. Read more about them here:
Functional exception-less error handling with C++23’s optional and expected
by Sy Brand
From the article:
std::optional<T> expresses “either a T or nothing”. C++23 comes with a new type, std::expected<T,E> which expresses “either the expected T, or some E telling you what went wrong”. This type also comes with that special new functional interface. As of Visual Studio 2022 version 17.6 Preview 3, all of these features are available in our standard library. Armed with an STL implementation you can try yourself, I’m going to exhibit how to use std::optional‘s new interface, and the new std::expected to handle disappointments.
